Sep. 2013, 日本機械学会エンジンシステム部門研究業績賞, 日本機械学会エンジンシステム部門

Aug. 2010, 自動車技術会技術部門貢献賞, 自動車技術会
金野 満

16 Jun. 2009, 日本機械学会関東支部第15期総会講演会優秀講演賞, KIVAによるDME噴霧の解析（分裂長さに関する検討, 日本機械学会関東支部
千葉和貴;岡本毅;金野満

Jun. 2009, 日本機械学会関東支部第15期総会講演会優秀講演賞, KIVAによるDME噴霧の解析（分裂長さに関する検討, 日本機械学会関東支部
千葉和貴,岡本毅,金野満

Fundamental study of the mechanism for a gasoline-fueled turbulent jet ignition using an optically accessible prechamber and large-eddy simulation
Satoshi Sakaida; Soh Furukawa; Terutaka Ishi; Kotaro Yokoi; Syuhei Sato; Kotaro Tanaka; Mitsuru Konno; Naoki Yoneya; Eiichiro Ohata, Elsevier BV
Thermal Science and Engineering Progress, Jan. 2025

Formation of Polycyclic Aromatic Hydrocarbons in Fuel-Rich Oxidation of Toluene, Toluene/Dimethyl Ether Blend, and Toluene/Oxymethylene Ether-3 Blend
Shunsuke Suzuki; Yudai Ishii; Takuma Katsumi; Koichi Kinoshita; Satoshi Sakaida; Mitsuru Konno; Yasuyuki Sakai; Kotaro Tanaka; Mitsuharu Oguma, American Chemical Society (ACS)
Energy & Fuels, 20 Aug. 2024

〔Major achievements〕Experimental and Modeling Study of NH3-SCR on a,Hydrocarbon-Poisoned Cu-CHA Catalyst
Kotaro Tanaka; Ibuki Dobashi; Satoshi Sakaida; Mitsuru Konno, Last, SAE
SAE Technical Paper, 31 Oct. 2023, [Reviewed]

〔Major achievements〕Experimental and Kinetic Modeling Study of Polycyclic Aromatic Hydrocarbon Formation Pathways in Fuel-rich Oxidation of 2-Methylfuran Using an Atmospheric Flow Reactor
Shunsuke Suzuki; Shota Kiuchi; Koichi Kinoshita; Yoshinaka Takeda; Satoshi Sakaida; Mitsuru Konno; Yasuyuki Sakai; Kotaro Tanaka; Mitsuharu Oguma, Elsevier
Combustion and Flame, 29 Jun. 2023, [Reviewed]

An experimental study on the conversion of CaO to CaSO4 during diesel particulate filter regeneration
Kotaro Tanaka; Yasuyuki Sakai; Yudai Ishii; Yusuke Yokobayashi; Satoshi Sakaida; Mitsuru Konno, Last, Springer
Emission Control Science and Technology, 08 May 2023, [Reviewed]

Elucidation of exhaust gas recirculation deposit formation mechanism based on chemical analysis of components
Shunsuke Suzuki; Goutham Kukkadapu; Yudai Ishii; Takuma Katsumi; Koichi Kinoshita; Yoshinaka Takeda; Satoshi Sakaida; Mitsuru Konno; Yasuyuki Sakai; Kotaro Tanaka; Mitsuharu Oguma; William J. Pitz, ELSEVIER
FUEL, 15 Dec. 2022, [Reviewed]

Blending Effect of Methanol on the Formation of Polycyclic Aromatic Hydrocarbons in the Oxidation of Toluene
The Combustion Institute
Proceedings of the Combustion Institute, 10 Dec. 2022, [Reviewed]

〔Major achievements〕CFD を用いたOME 燃料の噴霧および燃焼特性の解析
Corresponding, 自動車技術会
自動車技術会論文集, 25 Nov. 2022, [Reviewed]

水がPd系三元触媒の浄化性能に与える影響把握とそのモデル化
広瀬 史弥; 境田 悟志; 金野 満; 田中 光太郎; 久保 悠之介; 山川 幸紘; 草鹿 仁, 日本機械学会
日本機械学会論文集, May 2022, [Reviewed]

水熱劣化したCu-CHA触媒上におけるSCR反応の反応速度定数予測モデルの構築
松田 大史; 境田 悟志; 田中 光太郎; 金野 満; 冨田 衷子; 三木 健; 小渕 存, 日本機械学会
日本機械学会論文集, May 2022, [Reviewed]

Improvement of polymer electrolyte fuel cell performance by gas diffusion,layer with relatively hydrophilic surface
Satoshi Sakaida; Yuuri Takahashi; Kotaro Tanaka; Mitsuru Konno, Last
Journal of Power Sources, 23 Nov. 2021, [Reviewed]

Observation of OME-diesel blends spray injected by a single-hole nozzle injector under engine-relevant conditions
佐々木 旺雅,樋熊 航,境田 悟志,田中 光太郎,金野 満,瀬戸 雄史,石川 直也, Corresponding, The Japan Society of Mechanical Engineers
Transactions of the JSME, 17 Mar. 2021, [Reviewed]

流通反応装置を用いたエンジンオイル添加剤の酸化によるアッシュ生成経路に関する研究
田中 光太郎; 横林 佑亮; 石井 雄大; 境田 悟志; 金野 満; 新居見 絃; 酒井 康行
自動車技術会論文集, 19 Feb. 2021, [Reviewed]

Study on water transport in hydrophilic gas diffusion layers for improving the flooding performance of polymer electrolyte fuel cells
Satoshi Sakaida; Yutaka Tabe; Kotaro Tanaka; Mitsuru Konno, Last
International Journal of Hydrogen Energy, 08 Feb. 2021, [Reviewed]

Formation of Polycyclic Aromatic Hydrocarbons, Benzofuran, and Dibenzofuran in Fuel-rich Oxidation of Toluene Using a Flow Reactor
Royal Society of Chemistry
Physical Chemistry Chemical Physics, Feb. 2021, [Reviewed]

定電位式センサを活用したガソリン自動車排出ガス中のアンモニア計測
田中光太郎・上平和季・境田悟志・金野満・丹下健・佐藤進
自動車技術会論文集, 26 Jan. 2021, [Reviewed]

Potential of hydrolyzed oxymethylene dimethyl ether for the suppression of fuel crossover in polymer electrolyte fuel cells
Satoshi Sakaida; Mana Sugiyama; Ryuya Nagayama; Kotaro Tanaka; Mitsuru Konno, Last
International Journal of Hydrogen Energy, 16 Jan. 2021, [Reviewed]

水熱劣化したCu-CHA触媒におけるSCR反応のモデル化
田中 光太郎; 松田 大史; 藤本 輝光; 境田 悟志; 金野 満; 冨田 衷子; 三木 健; 小渕 存
自動車技術会論文集, 24 Dec. 2020, [Reviewed]

Time-resolved Mid-infrared Measurements of Hydrogen Peroxide in the Low-temperature Oxidation of Iso-octane in a Rapid Compression Machine
K; Tanaka; S. Sugano; N. Yokota; S. Sakaida; M. Konno; H. Naruke, Informa UK Limited
Combustion Science and Technology, 17 Dec. 2020, [Reviewed]

Evaluation of mechanism for EGR deposit formation based on spatially- and timeresolved scanning-electron-microscope observation
Kotaro Tanaka; Takumi Sakai; Takumi Fujino; Satoshi Sakaida; Mitsuru Konno; Koichi Kinoshita; Yoshinaka Takeda, SAE
SAE technical paper, 15 Sep. 2020, [Reviewed]

Investigation of fuel effects on the knock under lean burn conditions in a spark ignition engine
Masaki Naruke; Kohei Morie; Ryusei Kouda; Satoshi Sakaida; KotaroTanaka; Mitsuru Konno, Last, Elsevier
Fuel, Jul. 2020, [Reviewed]

Spray characteristics of supercritical DME
Ryuhei TAKADA; Rio WAKABAYASHI; Shinsuke KIKUCHI; Yuta MITSUGI; Satoshi SAKAIDA; Kotaro TANAKA and Mitsuru KONNO, Corresponding, The Japan Society of Mechanical Engineers
Transactions of the JSME, 10 Jun. 2020, [Reviewed]

Construction of model for estimating standard SCR reaction rate constant over hydrothermally aged SCR/DPF catalyst　　　　　　　　　　　　　　　
田中 光太郎; 大矢 直樹; 立野 僚; 藤本 輝光; 境田 悟志; 金野 満; 冨田 衷子; 三木 健, 公益社団法人 自動車技術会
自動車技術会論文集, Mar. 2020, [Reviewed]

Isocyanic acid hydrolysis and ammonia-SCR reaction over hydrothermally aged Cu-ZSM5
Masahiro Matsuoka; Takaaki Kitamura; Akira Obuchi; Jun Tsuchida; Satoshi Sakaida; Kotaro Tanaka; Mitsuru Konno, Last, SAE
SAE technical paper, 19 Dec. 2019, [Reviewed]

Effect of exhaust gas composition on EGR deposit formation
Satoshi Sakaida; Shogo Kimiyama; Takumi Sakai; Kotaro Tanaka; Mitsuru Konno; Koichi Kinoshita; Satoshi Kodama; Shinsuke Mori, SAE
SAE Technical paper, 19 Dec. 2019, [Reviewed]

Time-resolved quantitative measurements of intermediate species in the low-temperature oxidation of iso-octane using mid-infrared absorption spectroscopy　　　　　　　　　　　　　　　
Kotaro Tanaka; Shinya Sugano; Satoshi Sakaida; Mitsuru Konno; Hisashi Nakamura; Takuya Tezuka, Sixteenth International Conference on Flow Dynamics
Proceedings of Sixteenth International Conference on Flow Dynamics, 08 Nov. 2019, [Reviewed]

Water Transport in Gas Diffusion Layer of PEFC with Wettability Distribution in Thickness Direction　　　　　　　　　　　　　　　
Satoshi Sakaida; Kotaro Tanaka; Mitsuru Konno; Yutaka Tabe
ECS Transactions, Oct. 2019, [Reviewed]

Quantitative measurements of formaldehyde in the low-temperature oxidation of iso-octane using mid-infrared absorption spectroscopy
Kotaro Tanaka; Shinya Sugano; Hiroya Nagata; Satoshi Sakaida; Mitsuru Konno, Last
Applied Physics B, 09 Sep. 2019, [Reviewed]

Analysis of water transport in anisotropic gas diffusion layers for improved flooding performance of PEFC
S. Sakaida; Y. Tabe; T. Chikahisa; K. Tanaka; M. Konno, Last, The Electrochemical Society
Journal of The Electrochemical Society, 18 Jun. 2019, [Reviewed]

Effects of hydrogen addition on engine performance in a spark ignition engine with a high compression ratio under lean burn conditions
M. Naruke; K. Morie; S. Sakaida; K. Tanaka; M. Konno, Last
International Journal of Hydrogen Energy, 01 Apr. 2019, [Reviewed]

Experimental Study on Ignition Characteristics of Bio-blended Gasoline under Lean Burn Conditions　　　　　　　　　　　　　　　
K. Tanaka; T. Funabashi; S. Sakaida; M. Konno, Last
15th International Conference on Flow Dynamics, 06 Nov. 2018, [Reviewed]

臨界点を含む広範囲の圧力，温度におけるDME中の音速計測および体積弾性率の算出
菊地 真輔; 大越 淑央; 高田 竜平; 田中 光太郎; 境田 悟志; 横田 卓政; 陳 之立; 金野 満, Last, The Japan Society of Mechanical Engineers
Transactions of the JSME (in Japanese), 23 Oct. 2018, [Reviewed]

Study on PEFC Gas Diffusion Layer with Designed Wettability Pattern Tolerant to Flooding　　　　　　　　　　　　　　　
S. Sakaida; Y. Tabe; T. Chikahisa; K. Tanaka; M. Konno, Last
ECS Transactions, Oct. 2018, [Reviewed]

Kinetic measurements of HNCO hydrolysis over SCR catalyst
Masahiro Matsuoka; Takaaki Kitamura; Akira Obuchi; Jun; Tsuchida; Kotaro Tanaka; Mitsuru Konno, Last, SAE
SAE Technical Paper, 10 Sep. 2018, [Reviewed]

尿素分解過程の解明に向けたイソシアン酸の高精度計測法の開発
松岡正紘、土田淳、北村高明、田中光太郎、金野満, Last, 自動車技術会
自動車技術会論文集, 01 Apr. 2018, [Reviewed]

The effect of EGR on ignition characteristics of gasoline under lean burn conditions　　　　　　　　　　　　　　　
Masaki Naruke; Shoichi Yoshida; Yuusuke Wachi; Kotaro Tanaka; Mitsuru Konno, Last
11th Asia-Pacific Conference on Combustion, 15 Dec. 2017, [Reviewed]

Experimental Study on the Effect of Lubricant Oil on Ignition Characteristics of Hydrocarbons Using a Rapid Compression Machine　　　　　　　　　　　　　　　
Yuusuke Wachi; Kazuki Iwakura; Kotaro Tanaka; Mitsuru Konno; Ying Jiang; Yasuyuki Sakai
11th Asia-Pacific Conference on Combustion, 15 Dec. 2017, [Reviewed]

Kinetic Modeling Study of NOx Conversion Based on Physicochemical Characteristics of Hydrothermally Aged SCR/DPF Catalyst
Naoki Ohya; Kohei Hiyama; Kotaro Tanaka; Mitsuru Konno; Atsuko Tomita; Takeshi Miki; Yutaka Tai, Diesel engines have better fuel economy over comparable gasoline engines and are useful for the reduction of CO2 emissions. However, to meet stringent emission standards, the technology for reducing NOx and particulate matter (PM) in diesel engine exhaust needs to be improved. A conventional selective catalytic reduction (SCR) system consists of a diesel oxidation catalyst (DOC), diesel particulate filter (DPF), and urea-SCR catalyst. Recently, more stringent regulations have led to the development of SCR systems with a larger volume and increased the cost of such systems. In order to solve these problems, an SCR catalyst-coated DPF (SCR/DPF) is proposed. An SCR/DPF system has lower volume and cost compared to the conventional SCR system. The SCR/DPF catalyst has two functions: combustion of PM and reduction of NOx emissions. As PM is removed from the DPF at high temperatures (>
650°C), the SCR/DPF system is exposed to higher temperatures as compared with those in the conventional SCR system. In this study, we investigated the NOx reduction performance and the properties of a hydrothermally aged SCR/DPF catalyst. Using these data, a model that can predict the NOx conversion of the hydrothermally aged SCR/DPF catalyst was constructed. A commercial copper-exchanged zeolite catalyst, Cu-ZSM-5, was used and aged in synthetic air with 10% water over the temperature range 650-750 °C. The effects of hydrothermal aging on the catalysts were investigated using a synthetic gas bench, and a detailed analysis of the structure of the hydrothermally aged catalyst was performed. Using the experimental data, we succeeded in constructing a hydrothermally aged SCR/DPF model for predicting the NOx conversion based on changes in the physicochemical characteristics of the catalysts with changes in the hydrothermal aging conditions. This work is the first step toward bridging the gap between a lab-simulated performance model and the global reactivity observed under real-world conditions., SAE
SAE Int. J. Fuels Lubr, 01 Dec. 2017, [Reviewed]

EGRがガソリンサロゲート燃料の着火特性に及ぼす影響
成毛政貴、吉田翔一、和知祐亮、田中光太郎、金野満, Last, 自動車技術会
自動車技術会論文集, 01 Dec. 2017, [Reviewed]

尿素SCR/DPF触媒のNOx浄化性能に対する水熱劣化の影響
大矢直樹; 檜山好平; 田中光太郎; 金野満; 富田衷子; 三木健; 多井豊, 自動車技術会
自動車技術会論文集, 01 Dec. 2017, [Reviewed]

ディーゼルエンジンにおけるEGRデポジットの詳細解析～生成要因全体像の考察～
松野真由美; 小熊光晴; 鳥羽誠; 土屋健太郎; 廣木一輝; 菊池友樹; 田中光太郎; 金野満, Last
自動車技術会論文集, 01 Oct. 2017, [Reviewed]

Measurement of ethylene in combustion exhaust using a 3.3-μm distributed feedback interband cascade laser with wavelength modulation spectroscopy
Kotaro Tanaka; Kazushi Akishima; Masahiro Sekita; Kenichi Tonokura; Mitsuru Konno, Last, A sensor for the detection of ethylene (C2H4) in combustion exhaust based on a mid-infrared wavelength modulation spectroscopic technique was constructed using a distributed feedback interband cascade laser (DFB-ICL) with a wavelength of 3.3 mu m. The direct absorption spectrum of C2H4 in the range of 2978.8-2982.1 cm(-1) was recorded, where the spectrum was in good agreement with the spectrum simulated using parameters from the HITRAN 2012 database. The absorption line at 2979.581 cm(-1) [2.42 x 10(-21) cm(2) mol(-1) cm(-1), nu(11), P-P(5)(5)] was selected for C2H4 detection. This frequency was chosen to minimize spectral interference from other major combustion products in the emission frequency range of the DFB-ICL. A limit of detection for C2H4 of 96 parts per billion by volume was achieved at a signal-to-noise ratio of two under 3 kPa of pressure using 2f wavelength modulation spectroscopy. Using the developed sensor, the ethylene concentration in the exhaust from a portable power generator was also successfully determined., SPRINGER
Applied Physics B, 26 Jul. 2017, [Reviewed]

Experimental study on 2-Methylfuran-PRF blends ignition characteristics using a rapid compression machine
Junya Watanabe; Kotaro Tanaka; Mitsuru Konno, Last
Proc. of COMODIA, 25 Jul. 2017, [Reviewed]

Investigation of the slip mechanism of ash in diesel particulate filter
Yuta Mitsugi; Hironobu Muto; Kotaro Tanaka; Mitsuru Konno, Last
Proc. of COMODIA, 25 Jul. 2017, [Reviewed]

凝縮水によるDiesel Particulate Filter透過アッシュの成分計測
三次勇太; 武藤広信; 田中光太郎; 金野満, Last, 自動車技術会
自動車技術会論文集, 01 Apr. 2017, [Reviewed]

高圧燃焼場における実用ガソリンの自着火特性
田中光太郎; 吉田翔一; 岡田寛也; 成毛政貴; 金野満, 自動車技術会
自動車技術会論文集, Nov. 2016, [Reviewed]

Sensitive measurements of trace gas of formaldehyde using a mid-infrared laser spectrometer with a compact multi-pass cell　　　　　　　　　　　　　　　
Kotaro Tanaka; Kai Miyamura; Kazushi Akishima; Kenichi Tonokura; Mitsuru Konno
Infrared Physics and Technology, Oct. 2016, [Reviewed]

Investigation of Mechanism for Formation of EGR Deposit by in situ ATR-FTIR Spectrometer and SEM　　　　　　　　　　　　　　　
Kotaro Tanaka; Kazuki Hiroki; Tomoki Kikuchi; Mitsuru Konno; Mitsuharu Oguma
SAE Technical paper(Journal article), Oct. 2016, [Reviewed]

レーザーイオン化質量分析計を用いたEGRデポジット生成寄与成分の推定　　　　　　　　　　　　　　　
田中光太郎; 廣木一輝; 長谷部奨; 金野満; 小熊光晴
自動車技術会論文集, Apr. 2016, [Reviewed]

レーザ吸収分光法を用いた自動車から排出されるアンモニアの車載計測　　　　　　　　　　　　　　　
田中光太郎; 深川俊輔; 関田将大; 金野満
自動車技術会論文集, Apr. 2016, [Reviewed]

急速圧縮装置を用いた日本の実用ガソリンの自着火機構に関する研究　　　　　　　　　　　　　　　
田中光太郎; 岡田寛也; 小山貴久; 金野満
自動車技術会論文集, Apr. 2016, [Reviewed]

Investigation of Mechanism for Formation of EGR Deposit by in situ ATR-FTIR Spectrometer and SEM
Kotaro Tanaka; Kazuki Hiroki; Tomoki Kikuchi; Mitsuru Konno; Mitsuharu Oguma, Exhaust gas recirculation (EGR) is widely used in diesel engines to reduce nitrogen oxide (NOx) emissions. However, a lacquer is formed on the EGR valve or EGR cooler due to particulate matter and other components present in diesel exhaust, causing serious problems. In this study, the mechanism of lacquer deposition is investigated using attenuated total reflection Fourier transform infrared spectrometry (ATR-FTIR) and scanning electron microscopy (SEM). Deposition of temperature-dependent lacquers was evaluated by varying the temperature of a diamond prism between 80 and 120 °C in an ATR-FTIR spectrometer integrated into a custom-built sample line, which branched off from the exhaust pipe of a diesel engine. Lacquers were deposited on the diamond prism at 100 °C or less, while no lacquer was deposited at 120 °C. Time-dependent ATR-FTIR spectra were obtained for approximately 2 h from the beginning of the experiment. When the engine was started, water was detected during the initial period for all temperatures used. After the evaporation of water, spectra of aromatic hydrocarbons were observed at lower temperatures, while C=O absorption peaks were observed in the case of higher temperatures. Images of the lacquer obtained by SEM showed the presence of soot in the lacquer. These experimental results formed the basis for the elucidation of the lacquer formation mechanism., SAE International
SAE International Journal of Engines, 2016, [Reviewed]

Measurement of Sound Speed in DME in a Wide Range of Pressure and Temperature Including the Critical Point
Yoshihiro Okoshi; Shinsuke Kikuchi; Yuta Mitsugi; Kotaro Tanaka; Masaaki Kato; Tomoya Tsuji; Mitsuru Konno, Dimethyl ether (DME) is a promising alternative fuel for compression ignition (CI) engines. DME features good auto ignition characteristics and soot-free combustion. In order to develop an injection system suitable for DME, it is necessary to understand its fuel properties. Sound speed is an important fuel property that affects the injection characteristics. However, the measurement data under high-pressures corresponding to those in fuel injection systems are lacking. The critical temperature of DME is lower than that of diesel fuel, and is close to the injection condition. It is important to understand the behavior of the sound speed around the critical point, since the sound speed at critical point is extremely low. In this study, sound speed in DME in a wide pressure and temperature range of 1 MPa to 80 MPa, 298.15 K to 413.15 K, including the vicinity of the critical point, was measured. The sound speed in DME decreases as either the pressure falls or the temperature rises. It is approximately 400 m/s slower than that found in diesel fuel. Around the critical point, the sound speed drastically decreases due to a lowering of bulk modulus. At a low-pressure region below 20 MPa including the vicinity of the critical point, the experimental results were consistent with the calculated results based on Helmholtz equation of state, proposed by Wu et al. [1]. The calculated value in the high-pressure range has a tendency to register a slightly higher than the experimental one as the pressure rises., SAE International
SAE Technical Papers, 2016, [Reviewed]

Mechanism of deposit formation on an electronic throttle body
Hidefumi Hatsuzawa; Kotaro Tanaka; Mitsuru Konno, The buildup of deposits on the electronic throttle body (ETB) used to control the intake air flow in an internal combustion engine causes various problems. To obtain information that can be used to prevent the buildup of such deposit, the characteristics and mechanism of the deposit formation were investigated by analysis of the components of the deposit, measurement of the distribution of the deposit thickness, and numerical analysis of the intake air flow. The deposit was found to comprise a complex of fuel and engine oil, high molecular components, and inorganic matter, with engine oil being the major component. The distribution of the deposit thickness was also observed to be similar to that of the temperature decrease across the butterfly valve, indicating that the temperature decrease was related to the deposit formation. In addition, it was established that the deposit component on the downstream side of the butterfly valve was transported very close to the butterfly valve by a circulatory flow. Based on the study results, it is postulated that the mechanism of the ETB deposit formation involves the initial transportation, by the blow-by gas, of hydrocarbons to the ETB air passage, where the hydrocarbons are condensed and adhere to the passage wall just behind the butterfly valve, owing to sudden drop in the air temperature under small valve opening angle conditions. The formed deposit subsequently builds up by attracting fuel, engine oil, combustion products, and suspended solids in the atmospheric air intake passing through the air cleaner., SAGE PUBLICATIONS LTD
INTERNATIONAL JOURNAL OF ENGINE RESEARCH, Dec. 2015, [Reviewed]

Ignition Characteristics of 2,5-Dimethylfuran Compared,with Gasoline and Ethanol
Kotaro Tanaka; Naozumi Isobe; Kota Sato; Ryosuke Okada; Hiroya Okada; Yoshiki; Fujisawa; Mitsuru Konno, 2,5-dimethylfuran (DMF) and 2-methylfuran (MF) have attracted attention as new biofuels. To utilize furans as alternative fuels, fundamental studies on the combustion characteristics are required. In this study, the ignition delay times of DMF were measured using a rapid compression machine and compared with those of gasoline and ethanol. To investigate the effect of the addition of DMF to gasoline, the ignition delay times of DMF-gasoline surrogate fuel blends were also measured. The ignition delay times of DMF were longer than those of gasoline and shorter than those of ethanol. The simulation results using the DMF kinetic model were in reasonable agreement with those of the experiments., SAE International
SAE Technical Paper, 01 Sep. 2015, [Reviewed]

High -Speed Observation and Modeling of DimethylEther Spray combustion at Engine-Like conditions　　　　　　　　　　　　　　　
Yuta MITSUGI; Daiki WAKABAYASHI; Kotaro TANAKA and Mitsuru KONNO
SAE Int. J. Engines, Sep. 2015, [Reviewed]

An Experimental Study of Injection and Combustion with Dimethyl Ether
Satoru Sasaki; Masaaki Kato; Takamasa Yokota; Mitsuru Konno; Denis Gill, DiMethyl Ether (DME) has been known to be an outstanding fuel for combustion in diesel cycle engines for nearly twenty years. DME has a vapour pressure of approximately 0.5MPa at ambient temperature (293K), thus it requires pressurized fuel systems to keep it in liquid state which are similar to those for Liquefied Petroleum Gas (mixtures of propane and butane). The high vapour pressure of DME permits the possibility to optimize the fuel injection characteristic of direct injection diesel engines in order to achieve a fast evaporation and mixing with the charged gas in the combustion chamber, even at moderate fuel injection pressures. To understand the interrelation between the fuel flow inside the nozzle spray holes tests were carried out using 2D optically accessed nozzles coupled with modelling approaches for the fuel flow, cavitation, evaporation and the gas dynamics of 2-phase (liquid and gas) flows. And to understand the spray characteristics tests were carried out using constant volume vessel. For a spray observation, two methods were used a shadowgraph and a diffuse forward scatter method to obtain both gaseous phase and liquid phase of DME. Tests were then run on a single cylinder engine to determine the differences in combustion with the differing hole shapes as well as extra high injection pressure. Results showed that the different nozzle hole shapes changed the flow and the cavitation tendency. And these characteristics be utilized for an optimaization of the spray and combustion, SAE International
SAE Technical Papers, 14 Apr. 2015, [Reviewed]

ガソリン自動車からの燃料蒸発ガス排出量の推計　　　　　　　　　　　　　　　
田中光太郎; 宮村芽維; 山田裕之; 金野満
自動車技術会論文集, 01 Apr. 2015, [Reviewed]

エタノール-PRF混合燃料の自己着火特性に及ぼす酸素濃度の影響
岡田陵佑; 磯部直澄; 金野満; 田中光太郎, 自動車技術会
自動車技術会論文集, Mar. 2015, [Reviewed]

DME as Alternative to Diesel for Commercial Vehicles　　　　　　　　　　　　　　　
Masaaki Kato; Takamasa Yokota; Jost Weber; Denis Gill; Mitsuru Konno
Proc. of ICPC 2015, 2015, [Reviewed]

Influence of Spectral Line Broadening on Measurements of NH<inf>3</inf> Concentration in Automobile Exhaust Using Near-IR Laser Absorption Spectroscopy
Kotaro Tanaka; Masatoshi Takano; Shuji Iimura; Kai Miyamura; Mitsuru Konno, Recently, highly sensitive near-IR laser absorption spectrometers have been employed to measure ammonia (NH<
inf>
3<
/inf>
) emissions. These instruments allow in-situ measurements of highly time-resolved NH<
inf>
3<
/inf>
emission levels in automobile exhaust. However, the effect of the automobile exhaust CO<
inf>
2<
/inf>
in NH<
inf>
3<
/inf>
measurements has not been studied in detail. Because the CO<
inf>
2<
/inf>
concentration in automobile exhaust is 2 to 3 orders of magnitude higher than the NH<
inf>
3<
/inf>
concentration, there is a possibility that spectral overlap by CO<
inf>
2<
/inf>
lines and/or the spectral broadening of NH<
inf>
3<
/inf>
by CO<
inf>
2<
/inf>
could affect the measured NH<
inf>
3<
/inf>
levels. This study had two major objectives. First, the effect of CO<
inf>
2<
/inf>
on the measured NH<
inf>
3<
/inf>
concentration was assessed using our developed near-IR laser absorption spectrometer. The second objective was to provide on-board NH<
inf>
3<
/inf>
measurements in the hybrid gasoline automobile exhaust using the developed spectrometer. As a result, the CO<
inf>
2<
/inf>
in automobile exhaust was found to affect the measured NH<
inf>
3<
/inf>
concentration. The NH<
inf>
3<
/inf>
concentrations in automobile exhaust differed by few percent at 0%-20% CO<
inf>
2<
/inf>
concentrations. The NH<
inf>
3<
/inf>
concentration values in automobile exhaust were corrected by using these data. On-board measurements of NH<
inf>
3<
/inf>
concentration in the hybrid gasoline automobile exhaust system showed that the NH<
inf>
3<
/inf>
emission prevailed under the conditions in which the automobile was running rich or during overly aggressive driving (e.g. on highway)., SAE International
SAE Technical Papers, 13 Oct. 2014, [Reviewed]

Effect of Relative Positions of Air-Fuel Mixture Distribution and Ignition on Combustion Variation in Gasoline Engine
Shunichi Kubota; Kotaro Tanaka; Mitsuru Konno, Combustion is known to be affected by variations in the air-fuel mixture concentration, residual gas concentration, turbulent kinetic energy, ignition, etc. However, because each of these factors is related to cycle-to-cycle variations, their effects on combustion variation are unclear. The purpose of this study was to clarify the influences of the air-fuel mixture distribution near the spark plug and variation in the relative position of the ignition on the combustion variation. A 4-cylinder port injection gasoline engine was used as the test engine, and the combustion variation was investigated by measuring the cylinder pressure and air-fuel ratio (A/F) near the spark plug for each cycle using a micro-Cassegrain sensor for each cylinder. The air-fuel mixture distribution was calculated using a Reynolds averaged Navier-Stokes simulation, and the spatial region of the high ignition probability was determined from the gas flow velocity. Then, the combustion progress when ignition occurred at each point of the region was calculated, and was compared with the measured combustion variation. As a result, the frequency distribution of the A/F within the ignition position variation region was correlated with the measured A/F for each cycle. Based on the combustion calculation results when the ignition position was changed, the difference that occurred in the growth rate of the initial flame kernel was related to the difference in the air-fuel mixture concentration at the ignition timing. These results suggested that variations in the relative positions of the air-fuel mixture distribution and ignition may strongly affect combustion variation., SAE International
SAE International Journal of Engines, 13 Oct. 2014, [Reviewed]

半導体レーザー吸収分光法の自動車排気中の二酸化炭素炭素同位体比計測への応用
田中 光太郎; 児島 涼太; 宮村 芽維; 金野 満; 戸野倉 賢一, 日本燃焼学会
日本燃焼学会誌, May 2014, [Reviewed]

新規バイオ燃料候補であるフラン類の自着火特性
磯部 直澄; 岡田 陵佑; 金野 満; 田中 光太郎, 自動車技術会
自動車技術会論文集, 25 Mar. 2014, [Reviewed]

自動車から排出される二酸化炭素の安定炭素同位体比
宮村芽維; 児島涼太; 戸野倉賢一; 金野満; 田中光太郎, Stable carbon isotope ratios of carbon dioxide (CO_2) in gasoline-, diesel- and natural gas-fueled automobiles exhaust were measured after catalyst treatment device using a near-IR laser based spectrometer. In the case of gasoline-fueled automobiles, CO_2 stable carbon isotope ratios were measured before catalyst treatment device. CO_2 concentration and CO_2 stable carbon isotope ratios in gasoline-fueled automobile exhaust were changed in accordance with the driving conditions. The variations of them were found to be due to the oxidation of carbon monoxide and hydrocarbons, and the difference of the reactivity of stable carbon isotopes on the catalyst treatment device. We also found that there were differences between CO_2 stable carbon isotope ratios in the gasoline-, diesel-fueled automobiles exhaust and those in the natural gas-fueled automobile exhaust., The Japan Society of Mechanical Engineers
環境工学シンポジウム2013 講演論文集, 11 Jul. 2013, [Reviewed]

Effect of fuel oxidation characteristics on dual fuel HCCI operating limit (comparison of main fuel between methane and toluene)
Takahiro Eguchi; Yusuke Kimura; Toru Maejima; Mitsuru Konno, HCCI operating range can be expanded by using two fuels with different ignition characteristics. In this study, the effect of oxidation characteristics of main fuel on the operating range was investigated. Toluene and methane were used as main fuel, and DME as ignition trigger fuel. Engine experiments using a single cylinder research engine showed that methane/DME HCCI operating range extended to higher equivalence ratio compared with toluene/DME HCCI. This is explained by numerical analysis based on elementary chemical reaction model that steep heat release rate can be controlled when higher ignition temperature fuel is used, because time lag between the first stage of high temperature oxidation induced by decomposition of hydrogen peroxide (H2O2) and onset of chain-branching reaction of main fuel increases. It was also found that the higher the reactivity with OH, the more the trigger fuel requirement, because low temperature oxidation of the trigger fuel was suppressed. © 2013 The Japan Society of Mechanical Engineers.
Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, Jul. 2013, [Reviewed]

Experimental and Detailed Chemical Kinetic Modeling Study of Furan Ignition in a Rapid Compression Machine　　　　　　　　　　　　　　　
Naozumi Isobe; Mitsuru Konno; Kotaro Tanaka
9th Asia-Pacific Conference on Combustion, May 2013, [Reviewed]

茨城大学工学部機械工学科における座学／実学連結型学習プログラムの開発と実証　　　　　　　　　　　　　　　
堀辺忠志; 増澤徹; 関東康祐; 金野満; 黒崎利榮; 河合彰
J. of JSEE, Feb. 2013, [Reviewed]

Numerical Analysis of Carbon Monoxide Formation in DME Combustion
Yuya Muramatsu; Mitsuharu Oguma; Tadanori Yanai; Mitsuru Konno, Dimethyl ether (DME) is an oxygenated fuel with the molecular formula CH3OCH3, economically produced from various energy sources, such as natural gas, coal and biomass. It has gained prominence as a substitute for diesel fuel in Japan and in other Asian countries, from the viewpoint of both energy diversification and environmental protection. The greatest advantage of DME is that it emits practically no particulate matter when used in compression ignition (CI) engine. However, one of the drawbacks of DME CI engine is the increase carbon monoxide (CO) emission in high-load and high exhaust gas circulation (EGR) regime. In this study, we have investigated the CO formation characteristics of DME CI combustion based on chemical kinetics. In order to understand the equivalence ratio (φ) - temperature (T) dependence of CO formation in DME combustion, we generated the CO φ-T map through numerical calculations with detailed chemical reaction models and compared it with that of methane combustion. Our results show that DME combustion has a local CO peak at a temperature of around 1000 K, which is a distinctive feature of DME, although general CO formation properties are not unlike those of methane combustion, in which the CO emission increases with temperature and equivalence ratio. The analysis of reaction paths shows that this local CO peak is produced by active low-temperature reactions during DME oxidation process. Copyright © SAE Japan and Copyright © 2011 SAE International.
JSAE/SAE SETC, Nov. 2011, [Reviewed]

Comparison of fuel economy and exhaust emission tests of 4WD vehicle using single-axis chassis dynamometer and dual-axis chassisdynamometer　　　　　　　　　　　　　　　
Tomoya Nakajo; Kenji Tsuchiya; Mitsuru Konno
JSAE/SAE Powertrains, Fuel & Lubricants, 31 Aug. 2011, [Reviewed]

高温酸化反応の制御に関する化学反応論的考察（高温酸化反応に対するNO共存の影響）
金野 満; 佐藤良祐, The effect of NO doping on high temperature oxidation reaction was investigated to have insights into the control of HCCI combustion. Numerical analysis based on GRI-Mech methane oxidation scheme showed that the doped NO inhibited methane oxidation. The engine experiments were conducted to verify the calculation results using a single cylinder HCCI test engine. The experimental results showed that the doped NO enhanced the oxidation reaction, which were completely contrary to the calculation results. The largest cause for the error was in CH₃ oxidation path in GRI-Mech., The Japan Society of Mechanical Engineers
日本機械学会論文集B編, Jan. 2011, [Reviewed]

DME圧縮着火機関の熱効率に及ぼす噴射圧力の影響-熱効率因子の解析による考察-
野内忠則; 金野満; 佐藤由雄; 及川洋; 野崎真哉, 自動車技術会
自動車技術会論文集, 25 Nov. 2010, [Reviewed]

異なる酸化反応機構を持つ燃料の組合せによるHCCI燃焼の運転範囲拡大
金野満; 松澤聡; 飛田直樹; 佐藤良祐, HCCI combustion characteristics of mixed fuels with different ignitability, toluene/DME, were investigated. Toluene is thermally stable with a high oxidation onset temperature, whereas DME has good ignitability with active low temperature oxidation reactions. Engine test was conducted using a single cylinder, naturally-aspirated test engine to determine the HCCI operating range. Numerical calculations with elementary reaction models were also made to analyze the ignition and combustion mechanisms of toluene/DME HCCI process. The engine test showed that the operation range extended to higher loads without knocking, when DME quantity is adjusted an equivalence ratio of 0.1, the minimum requirements for ignition. The maximum load of φ0.77 in total equivalence ratio and BMEP of 0.59MPa was achieved. An elementally reaction model used in chemical analysis was on the basis of both Emdee's toluene oxidation scheme and Curran's DME2000 scheme. It was shown that when DME coexisted, the toluene oxidation temperature decreased to a low temperature at which single toluene would not react. In this temperature range, toluene oxidation is totally controlled by OH supplied from DME low temperature mechanism. The subsequent excursive hot fame reaction is restrained because toluene oxidation proceeds in stages depending on a temperature rise., The Japan Society of Mechanical Engineers
機械学会論文集, Oct. 2010, [Reviewed]

Optimization of Injection Pressure for Fuel Consumption and Exhaust Emissions in a Dimethyl Ether (DME) Engine with a Common Rail Type Injection System　　　　　　　　　　　　　　　
Tadanori Yanai; Mitsuru Konno; Yoshio Sato; Hiroshi Oikawa; Shinya Nozaki
Journal of KONES Powertrain and Transport, 15 Sep. 2010, [Reviewed]

Experimental and Numerical Analysis of High Pressure DME Spray
Mitsuru Konno; Kazuki Chiba; Takeshi Okamoto, DME has lower energy content per unit volume than that of light oil (typical petroleum based diesel fuel). Roughly 1.8 times the quantity of DME is required to obtain equivalent content of light oil. DME also exhibits higher compressibility and much lower viscosity than light oil, so high pressure injection is not easy. Currently, DME engines have utilized a larger injection volume by enlarging the nozzle diameter with a relatively low injection pressure up to 60MPa. In order to obtain higher performance in future DME engines, high pressure fuel injection is considered essential, however the high pressure DME spray characteristics have not yet been understood. In this research, DME spray characteristics of high injection pressure up to 140MPa were examined using a constant volume vessel under engine-like temperature/pressure conditions. For a spray observation, two methods were used: a shadowgraph method and a diffuse forward scatter method, in order to distinguish between gaseous and liquid phase fuel. A high-speed video camera with 20,000 frames per second and 304× 304 pixel resolution was used to image the DME spray. The internal DME spray structure was investigated with numerical analysis using the KIVA-3V. Physical properties of DME required by the numerical analysis were carefully provided, and KIVA-3V was modified by calibrating the numerical model to the DME spray observation results. Results showed that DME evaporation was overwhelmingly faster compared to light oil, and a more evenly distributed leaner spray was formed. Even when using a larger nozzle diameter at a lower injection pressure of about 60MPa, the overall average interior spray equivalence ratio was equivalent to a light oil spray with an injection pressure of 200MPa. When the fuel injection pressure was increased, air entrainment was further improved, which indicates that this may effectively improve DME engine performance in the high speed, high load region. Copyright © 2010 SAE International.
SAE Paper 2010-01-0880, 12 Apr. 2010, [Reviewed]

高圧噴射ＤＭＥ噴霧のマクロ的特性と内部構造
岡本毅; 金野満, 自動車技術会
自動車技術会論文集, Mar. 2010, [Reviewed]

バイオディーゼル燃料の低温流動性改善に関する研究（圧力凝固特性およびDME混合による低温流動性改善）　　　　　　　　　　　　　　　
岡本毅; 金野満
機械学会論文集B編, Dec. 2008, [Reviewed]

Study on Carbon-Deposit Formation Characteristics and Formation Factors of a small Diesel Engine Fueled with Rapeseed Methyl Ester
Mitsuru Konno; Yoshiyuki Abe; Takeshi Okamoto; Yuzo Aoyagi; Hajime Ishii; Daisuke Kawano
Review of Automotive Engineering, Jul. 2008, [Reviewed]

Improvement of low temperature flow characteristics of bio diesel fuel (solidification pressure and improvement of solidification characteristics by blending DME)
Takeshi Okamoto; Mitsuru Konno, Solidification characteristics of PME (palm methyl ester) and RME (rapeseed methyl ester) under high-pressure conditions up to 200 MPa were investigated. To improve low temperature fluidity of PME since it has high pour point, JIS No. 2 diesel fuel, ethanol and dimethyl ether (DME) were blended into PME. The influence of their blend ratio on cloud point and pour point were examined. Solidification characteristic of blended fuels under high-pressure conditions up to 200 MPa were also investigated. The result was that, solidification pressure of PME was less than 100 MPa, and RME did not solidify up to 180 MPa at room temperature. Pour point and cloud point lowering effect of blending DME are more significant than that of blending diesel fuel and ethanol. It is possible to use PME by blending DME in cold seasons and in regions where neat PME cannot be used. DME, diesel fuel and ethanol blend into PME made the solidification pressure at room temperature increase to 150 MPa or more. DME was more influential fuel on improvement of low temperature fluidity of PME than other fuels., Japan Society of Mechanical Engineers
Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 2008

Hybrid Type electromagnetic Valve Actuator for Automobile Engine　　　　　　　　　　　　　　　
Yohji Okada; Hiromasa Fuse; Mitsuru Konno
Journal of the Japan Society of Applied Electromagnetics and Mecganics, Sep. 2007, [Reviewed]

茨城大学工学部における”ものづくり”創造教育の取り組み　　　　　　　　　　　　　　　
伊藤伸英; 篠塚淳; 前川克廣; 増澤徹; 伊藤吾郎; 金野満; 柴田隆行
工学教育, Mar. 2007, [Reviewed]

予混合圧縮着火過程に及ぼす共存成分の影響（第2報）　　　　　　　　　　　　　　　
金野 満; 米山佳之; 高木利憲; 陳之立
自動車技術会論文集, Nov. 2006, [Reviewed]

パームメチルエステル/DME複合燃料ディーゼル機関における性状および燃焼に関する研究　　　　　　　　　　　　　　　
中里俊洋; 岡本毅; 金野満
自動車技術会論文集, Sep. 2005, [Reviewed]

予混合圧縮着火過程に及ぼす共存成分の影響
金野満
自動車技術会論文集, Sep. 2005, [Reviewed]

Iginition Mechanisms of HCCI Combustion Process Fueled with Methane/DME Composite Fuel
Mitsuru Konno and Zhili Chen, Homogeneous charge compression ignition (HCCI) combustion of methane was performed using dimethyl ether (DME) as an ignition improver. The ignition mechanisms of the methane/DME/air HCCI process were investigated on the basis of the chemical kinetics. The engine test was also conducted to verify the calculation results, and to determine the operation range. Analysis of the results showed that DME was an excellent ignition improver for methane, having two functions of temperature rise and OH radical supply. It was also shown that the operation range was extended to an overall equivalence ratio of 0.54 without knocking, by controlling DME quantity. Copyright © 2005 SAE International.
SAE Paper, Apr. 2005, [Reviewed]

DMEの燃焼酸化反応に関する分光学的考察　　　　　　　　　　　　　　　
小熊光晴; 後藤新一; 陳之立; 初沢英文; 金野満; 渡邉朋子
自動車技術会論文集, Jul. 2004

Spectroscopic Analysis of Combustion in the DME Diesel Engine
Hidefumi Hatsuzawa; Mitsuharu Oguma; Shinichi Goto; Tomoko Watanabe; Mitsuru Konno, For better understanding of the combustion characteristics in a direct injection dimethyl ether (DME) engine, the chemiluminescences of a burner flame and in-cylinder flame were analyzed using the spectroscopic method. The emission intensities of chemiluminescences were measured by a photomultiplier after passing through a monochrome-spectrometer. For the burner flame, line spectra were found nearby the wave length of 310 nm, 430 nm and 515 nm, arising from OH, CH and C2 radicals, respectively. For the in-cylinder flame, a strong continuous spectrum was found from 340 nm wave length to 550 nm. Line spectra were also detected nearby 310 nm, 395 nm and 430 nm, arising from OH, HCHO, and C2 radicals, respectively, partially overlapping with the continuous spectrum. Of these line spectra, 310 nm of OH radical did not overlapped with the continuous spectrum. The spatial distribution of the OH radical during the combustion period of the test engine can be observed by an image intensified high-speed video camera system with a band-pass filter. Copyright © 2004 SAE International.
SAE Paper, Mar. 2004, [Reviewed]

Electromagnetic Valve Actuator for Automobile Engines
Yohji Okada; Yoshiaki Marumo; Mitsuru Konno, One of the key technologies in improving engine performance is flexible valve timing. New combustion systems such as Homogeneous Charge Compression Ignition (HCCI) can be realized by flexible valve operation. Usually the valve timing is determined only by engine crank angle and is not flexible. To overcome this problem, an electromagnetic actuator had been proposed. However, a conventional solenoid actuator always requires current and the efficiency is low. In this study, a new type of linear actuator that uses bias flux produced by a permanent magnet (PM) to reduce power consumption was proposed. First, a cylindrical actuator was developed. To achieve further power consumption reduction, miniaturization and high-speed drive, a seesaw type actuator was designed. An experimental setup was designed to confirm its characteristics. The results showed improved performance and a high possibility for practical use. The developed actuator is planned to be installed on a single cylinder diesel engine and tested of its capability. Copyright © 2004 SAE International.
SAE Paper, Mar. 2004, [Reviewed]

Chemiluminescence Analysis from In-Cylinder Combustion of a DME-Fueled DI Diesel Engine
Oguma Mitsuharu; Goto Shinichi; Hidefumi Hatsuzawa; Mitsuru Konno; Zhili Chen; Tomoko Watanabe, To date, the DME combustion mechanism has been investigated by in-cylinder gas sampling, numerical calculations and observation of combustion radicals. It has been possible to quantify the emission intensities of in-cylinder combustion using a monochromator, and to observe the emitting species as images by using band-pass filters. However, the complete band images were not observed since the broadband (thermal) intensity may be stronger than band spectra intensities. Emission intensities of DME combustion radicals from a pre-mixed burner flame have been measured using a spectroscope and photomultiplier. Results were compared to other fuels, such as n-butane and methane, then, in this study, to better understand the combustion characteristics of DME, emission intensities near CH bands of an actual DI diesel engine fueled with DME were measured, and band spectra emitted from the engine were defined. Near TDC, emission intensities did not vary with wavelength. This baseline intensity seems to be continuous spectrum emission. Two emission intensity peaks were observed
one near 427 nm and the other at 431.4 nm, and these were apparently DME combustion emission lines. The intensity of the 427 nm line increases from the early to middle stage of diffusion combustion, compared to the continuous spectrum. As combustion advances, the light intensity strengthens around the combustion chamber walls. That is, active heat release occurs near the chamber walls. Copyright © 2003 SAE International.
SAE Paper, Oct. 2003, [Reviewed]

圧縮比による予混合圧縮着火機関の燃焼制御
陳之立; 金野満; 加藤英人
自動車技術会論文集, Jul. 2003, [Reviewed]

Computatioinal and Experimental Study on the Influence of Formaldehyde on HCCI Combustion Fueled with Dimethyl Ether
Mitsuru Konno; Zhili Chen; Kentarou Miki, Computational analysis on the mechanism and control method for DME fueled HCCI type combustion was carried out on the basis of the chemical kinetics. The calculation results were verified experimentally using a single cylinder test engine. Analysis of the results showed that DME oxidation is governed by production/consumption behavior of OH, because DME oxidation is initiated by dehydrogenation with OH radicals. It was also shown that the overall oxidation reaction could be controlled by adding substances which react competitively with OH in the dehydrogenation reactions of DME. Of the substances we tested, formaldehyde was most effective. It was confirmed by engine testing that by adding a small amount of formaldehyde to the DME/air mixture, the heat evolved in the low temperature reactions was reduced and the reaction appearance timing was retarded. Copyright © 2003 Society of Automotive Engineers of Japan, Inc.
SAE Paper, May 2003, [Reviewed]

How to Put the HCCI Engine to Practical Use: Control the Ignition Timing by Compression Ratio and Increase the Power Output by Supercharge
Zhili Chen; Mitsuru Konno, In this study, compression ratio for controlling ignition and combustion for HCCI engine is proposed. Compression ratio can be changed higher for leaner mixture or lower for richer mixture to prevent misfire and rapid combustion respectively. In order to increase the power rate of the HCCI engine to a practical use level, supercharge can be combined with various compression ratio. To ascertain the efficacy on ignition and combustion, a series of bench tests and combustion simulations with constant pressure were conducted. The testing result shows that compression ratio is very useful for HCCI control: the engine can run over a wider load range of equivalent ratio without misfire or rapid combustion, and the power rate is comparable to a DI (Direct Injection) engine when a supercharger is installed. The findings from the combustion simulation are: progress (or degeneration) of low temperature oxidation is highly dependent on pressure but pressure does not affect the reaction rate of high temperature oxidation. Copyright © 2003 Society of Automotive Engineers of Japan, Inc.
SAE Paper, May 2003, [Reviewed]

Spectroscopic analysis of combustion flame fueled with dimethyl ether (DME)
Mitsuharu Oguma; Shonichi Goto; Hidefumi Hatsuzawa; Mitsuru Konno; Zhili Chen; Tomoko Watanabe, To better understand the combustion characteristics of DME, emission intensities of DME combustion radicals from a pre-mixed burner flame were measured by a spectroscope and photomultiplier, Results were compared to other fuels, such as methane and butane. Large peaks in the band spectra from pre-mixed and diffusion DME flames were found near 310 nm, 430 nm, and 515 nm, arising from OH, CH and C2, respectively. The DME emission intensities decreased with increasing the equivalence ratio in this study. Notably, the relative decrease in the C2 band spectra peak was greater than that of the OH band. Comparing the pre-mixed DME and butane flames, the butane band spectra peaks were similar in shape, but much stronger than those for DME. However, it was remarkable that CH and C2 band spectra peaks decreased only slightly with increase in equivalence ratio compared to the DME case. In case of the butane diffusion flame, there was a continuous spectrum above 430 nm, presumably due to thermal radiation of soot. Copyright © 2003 Society of Automotive Engineers of Japan, Inc.
SAE Paper, May 2003, [Reviewed]

ジメチルエーテル予混合圧縮着火燃焼に関する化学反応論的検討
金野 満; 陳 之立; 梶谷 修一; 米田 健児; 小熊 光晴; 後藤 新一, 自動車技術会
自動車技術会論文集, Apr. 2003, [Reviewed]

Spray Characteristics of LPG Direct Injection Diesel Engine
Mitsuharu Oguma; Shinichi Goto; Kousuke Sugiyama; Masataka Kajiwara; Makihiko Mori; Mitsuru Konno; Tomohisa Yano, In this study, spray images of LPG Blended Fuels (LBF) for DI diesel engines were observed using a constant volume chamber at high ambient temperature and pressure, and the spray characteristics of the fuel were investigated. The LBF spray started to vaporize at the injector tip and the outer downstream regions of the spray, like diesel fuel, because of the high temperature at these areas. There were more vaporized areas compared to diesel fuel. Sufficient fuel injection volume and volatility of LBF resulted in good fuel-air mixture, then, THC emissions decreased compared to diesel fuel at high load engine test conditions. Butane spray image could not be observed at the injector tip. It seems that the high temperature of the injector tip caused the butane spray to vaporize rapidly. Spray tip penetration with LBF and butane were equal or greater than with diesel fuel. The high volatility of LBF and butane had no noticeable effect on spray penetration. Spray area with LBF and butane were higher than with diesel fuel. Expansion of LBF and butane volume seems to drive the spray area higher. Equivalent cone spray angles were with all three observed fuels, ranging from 20 to 25 deg. Copyright © 2003 SAE International.
SAE Paper, Mar. 2003, [Reviewed]

Experimental Study of CI Natural-Gas/DME Homogeneous Charge Engine　　　　　　　　　　　　　　　
Zhili Chen; Mitsuru Konno; Mitsuharu Oguma; Tadanori Yanai
SAE Paper, Mar. 2003, [Reviewed]

DMEディーゼルエンジンにおける燃焼ラジカルの分光法による観察
小熊光晴; Gisoo Hyun; Mahabubul Alam; 後藤新一; 金野満; 大山和也, 自動車技術会
自動車技術会論文集, Jul. 2002, [Reviewed]

Atomization Characteristics for Various Ambient Pressure of Dimethyl Ether (DME)
Mitsuharu Oguma; Gisoo Hyun; Shinichi Goto; Mitsuru Konno; Shuichi Kajitani, Recently, dimethyl ether (DME) has been attracting much attention as a clean alternative fuel, since the thermal efficiency of DME powered diesel engine is comparable to diesel fuel operation and soot free combustion can be achieved. In this experiment, the effect of ambient pressure on DME spray was investigated with observation of droplet size such as Sauter mean diameter (SMD) by the shadowgraph and image processing method. The higher ambient pressure obstructs the growth of DME spray, therefore faster breakup was occurred, and liquid column was thicker with increasing the ambient pressure. Then engine performances and exhaust emissions characteristics of DME diesel engine were investigated with various compression ratios. The minimum compression ratio for the easy start and stable operation was obtained at compression ratio of about 12. The brake thermal efficiencies with various compression ratio from 12 to 17.7 (original compression ratio) were almost same level when compared to the original compression ratio of the engine. When the engine fueled with DME is operated at low compression ratio, the theoretical thermal efficiency decrease. However, the high combustion efficiency, the increased degree of constant volume and the lower heat loss to cooling water make up for the decreased theoretical thermal efficiency. Furthermore, the low THC and CO emissions and engine noise were comparable to original compression ratio, and the reduction of NOx emission was achieved. Copyright © 2002 Society of Automotive Engineers, Inc.
SAE Paper, May 2002, [Reviewed]

Spectroscopic Investigation of the Combustion Process in DME Compression Ignition Engine
Mitsuharu Oguma; Gisoo Hyun; Shinichi Goto; Mitsuru Konno and Kazuya Oyama, For better understanding of the in-cylinder combustion characteristics of DME, combustion radicals of a direct injection DME-Fueled compression ignition engine were observed using a spectroscopic method. In this initial report, the emission intensity of OH, CH, CHO, C2 and NO radicals was measured using a photomultiplier. These radicals could be measured with wavelength resolution (half-width) as about 3.3 nm. OH and CHO radicals appeared first, and then CH radical emission was detected. After that, the combustion radicals were observed using a high-speed image intensified video camera with band-pass filter. All of radicals were able to observe as images with half-width as 6 or about 10 nm. Rich DME leaked from nozzle was burning at the end of combustion. Therefore, the second light emission of C2 radical after the main combustion was observed. The light of OH emitted all over the DME spray at the combustion started, then the dim light expanded in combustion chamber, so that CH radical emitted at the spray tip. After that the light intensity around the combustion chamber wall became strong with advancing the combustion. The light of NO radical emitted at around the tip of spray, which area seems to be stoichiometric combustion area. Copyright © 2002 Society of Automotive Engineers, Inc.
SAE Paper, May 2002, [Reviewed]

A Study of low-compression-ratio Dimethyl Ether Diesel Engine
S. Kajitani; Z. Chen; M. Oguma; M. Konno, A new concept of using dimethyl ether (DME) as an alternative fuel in direct injection compression ignition engines with low compression ratios was presented to seek a combustion regime with the highest thermal efficiency. The concept was experimentally evaluated by a comparison of performance and emissions between a DME-fuelled engine and the corresponding conventional diesel engine. The result demonstrated that the DME-fuelled engine is superior to the conventional diesel engine in terms of thermal efficiency, emissions and engine noise, particularly at low compression ratios. However, NOx emission is unacceptably high and needs to be reduced by exhaust gas recirculation (EGR) or after-treatment systems. © 2002, Institution of Mechanical Engineers. All rights reserved.
International Journal of Engine Research, May 2002, [Reviewed]

Combustion Radicals Observation of DME Engine by Spectroscopic Method
Mitsuharu Oguma; Gisoo Hyun; Mahabubul Alam; Shinichi Goto; Mitsuru Konno; Kazuya Oyama, For better understanding of the in-cylinder combustion characteristics of DME, combustion radicals of a direct injection DME-Fueled compression ignition engine were observed using a spectroscopic method. In this initial report, the emission intensity of OH, CH, CHO, C2 and NO radicals was measured using a photomultiplier. These radicals could be measured with wavelength resolution (half-width) of about 3.3 nm. OH and CHO radicals appeared first, and then CH radical emission was detected. After that, the combustion radicals were observed using a high-speed image intensified video camera. C2 and CH radicals were able to observe roughly as images. However, the emission intensity of DME combustion was not strong enough to take OH, CHO and NO radical images. CH radical combustion occurred near the chamber wall and burned like a ring, as combustion progress, indicating active heat release occurred near the chamber wall. Copyright © 2002 Society of Automotive Engineers, Inc.
SAE Transactions Journal of Fuels and Lubricants, Mar. 2002, [Reviewed]

Experimental Study of Direct Injection Diesel Engine Fueled with Two Types of Gas To Lequid (GTL)
Mitsuharu Oguma; Shinichi Goto; Mitsuru Konno; Kouseki Sugiyama; Makihiko Mori, In this study, the main properties of two types of gas-to-liquid (GTL) fuels were investigated. Then, performance and emission characteristics of a compression ignition engine fueled with GTLs were investigated by comparison with diesel fuel. GTL1 was composed of 100% paraffin by volume, and GTL2 was composed of 99.8% paraffin and 0.2% aromatics by volume. Most GTL fuel properties were comparable to those of diesel fuel, while both fuels have a higher cetane number and lower sulphur. A diesel engine could be operated with GTL fueling without any special engine modifications. Our tests showed that with the high cetane number of GTLs, the ignition delay was shorter, and combustion started earlier than with diesel fuel. With GTL1 operation, THC and soot emissions were lower than with diesel fuel operation, and even lower with GTL2 fueling. The combustion duration with GTLs was longer as compared with diesel fuel at early injection timings, but became shorter than with diesel fuel operation with retarding injection timing. In case of GTL2, the combustion duration was shorter than that of GTL1 at retarded injection timings. The THC and soot emissions with GTLs were lower than those of diesel fuel at all injection timings, especially, THC and soot emissions with GTL2 were the lowest among all fuels tested here. Copyright © 2002 SAE International.
SAE Paper, 2002

ジメチルエーテル圧縮着火機関の燃焼特性　　　　　　　　　　　　　　　
金野 満; 梶谷修一; 陳 之立; 渡部泰幸
日本機械学会論文集B編, Oct. 2001, [Reviewed]

Study on homogenous premixed charge CI engine fueled with LPG
Zhili Chen; Mitsuru Konno; Shinichi Goto, A homogeneous mixture of LPG (Liquid Petroleum Gas) was used in a compression ignition engine. In order to control the ignition and combustion, a small amount of DME (Dimethyl Ether) was mixed with the LPG. Experimental and analytic studies on the combustion, the engine performance and the exhaust characteristics were conducted for investigating the possibilities and the problems of LPG application in the CI engines. Results show that the engine can run over a wide range of load with a high efficiency and NOx emission can be reduced to near zero level if an appropriate proportion of DME is added. © 2001 Society of Automotive Engineers of Japan, Inc. and Elsevier Science B.V.
JSAE Review, Sep. 2001, [Reviewed]

Performance and Emissions of a DI Diesel Engine Operating with the Blend of LPG and Ignition Improving Additives
Mahabubul Alam; S. Goto; K. Sugiyama; M. Kajiwara; M. Mori; M. Konno; M. Motohashi; K. Oyama, This research investigated the performance and emissions of a direct injection (DI) Diesel engine operated on 100% butane liquid petroleum gas (LPG). The LPG has a low cetane number, therefore di-tertiary-butyl peroxide (DTBP) and aliphatic hydrocarbon (AHC) were added to the LPG (100% butane) to enhance cetane number. With the cetane improver, stable Diesel engine operation over a wide range of the engine loads was possible. By changing the concentration of DTBP and AHC several different LPG blended fuels were obtained. In-cylinder visualization was also used in this research to check the combustion behavior. LPG and only AHC blended fuel showed NOX emission increased compared to Diesel fuel operation. Experimental result showed that the thermal efficiency of LPG powered Diesel engine was comparable to Diesel fuel operation. Exhaust emissions measurements showed that NOX and smoke could be considerably reduced with the blend of LPG, DTBP and AHC. Copyright © 2001 Society of Automotive Engineers, Inc.
SAE Paper, Sep. 2001

Investigation of the Combustion Process of a DI CI Engine Fueled with Dimethyl Ether
Mitsuru Konno; Shuichi Kajitani; Zhili Chen; Kenji Yoneda; Hiroki Matsui; Shinichi Goto, Dimethyl Ether (DME) is one of the major candidates for the next generation fuel for compression ignition (CI) engines. It has good self-ignitability and would not produce particulate, even at rich conditions. DME has proved to be able to apply to ordinary diesel engines with minimal modifications, but its combustion characteristics are not completely understood. In this study, the behavior of a DME spray and combustion process of a direct injection CI engine fueled with DME was investigated by combustion observation and in-cylinder gas sampling. To distinguish evaporated and non-evaporated zones of a spray, direct and schlieren imaging were carried out. The sampled gas from a DME spray was analyzed by gas chromatography, and the major intermediate product histories during ignition period were analyzed. Copyright © 2001 Society of Automotive Engineers, Inc.
SAE Paper, Sep. 2001, [Reviewed]

DME圧縮点火機関の低圧縮比に関する研究　　　　　　　　　　　　　　　
小熊光晴; 町田英之; 嶺岸澄貴; 金野満; 梶谷修一
日本機械学会論文集B編, Aug. 2001, [Reviewed]

DME圧縮着火機関の未燃成分に関する研究
金野満; 梶谷修一; 陳之立; 鈴木喜博
日本機械学会論文集B編, Jul. 2001, [Reviewed]

The unburned emissions from a ci engine operated with dimethyl ether
Mitsuru Konno; Shuichi Kajitani; Zhili Chen; Yoshio Suzuki, The hydrocarbon composition in the exhaust of a dimethyl ether (DME) fueled CI engine and sensitivity correction techniques for a THC analyzer were discussed. The formation process of unburned hydrocarbon species was also investigated by in-cylinder gas sampling. The results showed that since HC emissions in the exhaust consist of DME and a small amount of lower hydrocarbons, a constant correction factor could be applied for THC analyzer, within an error of ±5%. The gas sampling results indicated that high levels of C2 components, such as C2H2, C 2H4C2H6 were formed during combustion process, and were mostly oxidized before the exhaust valve opened., Japan Society of Mechanical Engineers
Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 2001, [Reviewed]

Combustion characteristics of a compression ignition engine fueled with dimethyl ether
Mitsuru Konno; Shuichi Kajitani; Zhili Chen; Hiroyuki Watanabe, The Combustion characteristics of a direct injection C. I. engine fueled with dimethyl ether (DME) were investigated. The in-cylinder observation of combustion process was conducted using high speed video camera. The concentration change of principal intermediate combustion products was traced by gas sampling. As the results, DME combustion was found to be non-luminous because polycondensation reaction over C2 would not proceed. It was also found that ignition occurred in the down stream of the spray, where DME was perfectly gasified. DME evaporated immediately after injection, and in the evaporating zone low temperature oxidation reaction actively took place., Japan Society of Mechanical Engineers
Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 2001, [Reviewed]

急速二段燃焼によるディーゼル機関のNOx低減　　　　　　　　　　　　　　　
金野満; 梶谷修一; 岩瀬俊幸; 渡部泰幸
日本機械学会論文集B編, Aug. 2000, [Reviewed]

Performance and emissions of DI compression ignition engines fueled with dimethyl ether (Performance and emissions in retrofitted engines)
ZL Chen; M Konno; S Kajitani, Engine performance and exhaust gas characteristics of a direct injection CI engine were investigated with neat dimethyl-ether (DME), an alternative fuel being considered for attaining low emissions. The study was conducted by comparing the new fuel with the conventional diesel fuel. Results from the present work include: ( 1) It was necessary to add a small amount of lubricating additives to DME in order to achieve satisfactory engine operation, to minimize excessive wear in the injection nozzle. (2) Engine performance for both fuels was mutually comparable. (3) Although negligible amounts of soot and very low THC emissions were measured, NOx emission was about the same as in diesel fuel operation. (4) The reduction of NOx emission by retarding the injection timing was highly significant with DME. (5) The NOx emission from the retrofitted engine could be further reduced by dissolving CO2 in DME., JAPAN SOC MECHANICAL ENGINEERS
JSME INTERNATIONAL JOURNAL SERIES B-FLUIDS AND THERMAL ENGINEERING, Feb. 2000, [Reviewed]

Performance and Emissions of DI Compression Ignition Engines Fueled with Dimethyl Ether –1st Report: Performance and Emissions in Retrofitted Engines-　　　　　　　　　　　　　　　
Zhiili CHEN; Mitsuru KONNO; Shuichi KAJITANI
JSME Journal, Feb. 2000, [Reviewed]

Experimental study of CI natural-gas/DME homogeneous charge engine
Zhili Chen; Mitsuru Konno; Mitsuharu Oguma; Tadanori Yanai, In this study, a homogeneous mixture of natural-gas and air was used in a compression ignition engine to reduce NOx emissions and improve thermal efficiency. In order to control ignition timing and combustion, a small amount of DME was mixed with the natural-gas. Engine performance and the exhaust characteristics were investigated experimentally. Results show the following: the engine can run over quite a large load range if a certain amount of DME is added into natural-gas. By optimizing the proportion of DME to natural-gas, NOx emissions can be lowered to near zero levels if the mixture is lean enough. Thermal efficiency is higher than that obtained with normal diesel fuel operation. Copyright © 2000 Society of Automotive Engineers, Inc.
SAE Technical Papers, 2000, [Reviewed]

A study of low compression ratio dimethyl ether (DME) diesel engine
Mitsuharu Oguma; Hideyuki Machida; Kiyotaka Minegishi; Mitsuru Konno; Shuichi Kajitani, The possibility of low compression ratio (CR) for dimethyl-ether (DME) diesel engines was investigated experimentally. The CR was altered by changing the top clearance volume from the original 17.7 CR to 10.16. The main results are summarized below: (1) The lowest CR for easy start and stable combustion is around 12. (2) At CRs from 17.7 to 12.36, the brake thermal efficiency of a DME engine is almost the same. (3) The aggravations of THC, CO emissions and noise of DME engine are extremely low. (4) The high combustion efficiency and the increased degree of constant volume of DME engine within the above CR range enables operation with high brake thermal efficiency., Japan Society of Mechanical Engineers
Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 2000, [Reviewed]

The effect of rich-lean rapid two-stage combustion for NOx reduction in a diesel engine
Mitsuru Konno; Shuichi Kajitani; Toshiyuki Iwase; Yasuyuki Watanabe, Rich-lean rapid two-stage combustion was attempted to reduce NOx from the diesel engine. The effect of the mixture concentration and its history on NO formation was evaluated using a thermo -chemical three-zone model. The experimental study was also carried out using a small directinjection diesel engine with high turbulent combustion system. Fuel-rich mixture was formed by two small cavity combustion chambers. Dimethyl Ether was used to form uniform rich mixture and to avoid smoke formation. The results show that NOx can be reduced in the heavy load when the mixture concentration shifts to lean from rich condition in a short period., Japan Society of Mechanical Engineers
Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 2000, [Reviewed]

Comparison of NOx Reduction Performance with NOx Catalyst in Simulated Gas and Actual DME Engine Exhaust Gas
M. Alam; O. Fujita; K. Ito; S. Kajitani; M. Konno; M. Oguma
ASME, Oct. 1999, [Reviewed]

Development of LPG DI Diesel Engine Using Cetane Number Enhancing Additives
Shinichi Goto; Daeyup Lee; Yoshotaka Wakao; Hidekazu Honma; Makihiko Mori; Yukio Akasaka; Kohtaro Hashimoto; Masamitsu Motohashi; Mitsuru Konno, A feasibility study of an LPG DI diesel engine has been carried out to study the effectiveness of two selected cetane enhancing additives: Di-tertiary-butyl peroxide (DTBP) and 2-Ethylhexyl nitrate (EHN). When more than either 5 wt% DTBP or 3.5 wt% 2EHN was added to the base fuel (100 % butane), stable engine operation over a wide range of engine loads was possible (BMEPs of 0.03 to 0.60 MPa). The thermal efficiency of LPG fueled operation was found to be comparable to diesel fuel operation at DTBP levels over 5 wt%. Exhaust emissions measurements showed that NOx and smoke levels can be significantly reduced using the LPG+DTBP fuel blend compared to a light diesel fuel at the same experimental conditions. Correlations were derived for the measured ignition delay, BMEP, and either DTBP concentration or cetane number. When propane was added to a butane base fuel, the ignition delay became longer. A simple thermodynamic model, using the detailed reaction mechanism of butane and DTBP, was developed to calculate the ignition delay as a function of overall equivalence ratio (or BMEP). Copyright © 1999 Society of Automotive Engineers, Inc.
SAE Paper, Oct. 1999, [Reviewed]

Unburned Emissions from a DI Diesel Engine Operated with Dimethyl Ether
M. Konno; S. Kajitani; Y. Suzuki
The 15th Internal Combustion Engine Symposium (International) in Seoul, Jul. 1999, [Reviewed]

NO Emission Characteristics in CI Engine Fueled with Neat Dimethyl Ether
Mitsuru Konno; Shuichi Kajitani; Mitsuharu Oguma; Toshiyuki Iwase; Ken-Ichiro Shima, In this study, the NO emission characteristics of a dimethyl ether fueled compression ignition (CI) engine were studied, and a suitable combustion control concept was developed. A three-zone thermo-chemical model was used to understand the basic NO formation characteristics with dimethyl ether. The experimental study was carried out using a small direct-injection diesel engine. Comparison of the experimental and calculated results showed that the dimethyl ether/air mixing process was relatively slow compared with diesel fuel, which is the main reason for the relatively high NO emissions with dimethyl ether operation, in spite of its lower adiabatic flame temperature. To reduce the high temperature period, turbulence was introduced into the combustion chamber by a high-turbulence combustion system, which reduced NO emissions. It became clear that acceleration of the mixing process is an important factor for NO reduction with dimethyl ether spray combustion. Copyright © 1999 Society of Automotive Engineers, Inc.
SAE Paper, Mar. 1999, [Reviewed]

DMEを燃料とする直接噴射式ディーゼル機関のNO排出特性
金野満; 梶谷修一, The present report is concerned with NO formation characteristics in a DI diesel engine operated with dimethyl ether (DME). Chemical equilibrium calculations were made to understand the basic NO formation properties of DME. An experimental study was also conducted with a small DI diesel engine, and the results were compared with the results of calculations using the three zone model. It was found that DME has the adiabatic flame temperature and equilibrium NO concentration which are both higher than alcohols but comparable to diesel fuel. In addition, it was suggested that the air mixing rate for DME spray is lower than that for diesel fuel and this is the cause of the relatively high NO emission when DME was used in the diesel engine., The Japan Society of Mechanical Engineers
日本機械学会論文集Ｂ編, Mar. 1999, [Reviewed]

ジメチルエーテル（DME）燃料とした圧縮点火直接噴射機関の性能と排気（第1報，レトロフィット時の機関性能および排気特性）
陳之立; 金野満; 梶谷修一
日本機械学会論文集Ｂ編, May 1998, [Reviewed]

酸素富化空気駆動火花点火機関の研究（暖機運転時の未燃炭化水素排出特性について）
金野満; 陳之立; 梶谷修一; 舟串卓也, Effects of the intake air oxygen enrichment (IOE) on unburned hydrocarbon emissions during the warm-up period in a spark ignition engine were investigated. Hydrocarbon species from C1 to C6,as well as total hydrocarbon concentrations, were determined by gas-chromatography. As a result, the warm-up period of IOE operation was reduced to one third, and hydrocarbon emissions, such as ethylene and benzene, reduced by 90% compared with normal air operation. It was also found that the effect of the decrease in quenching area with IOE on the reduction in hydrocarbon emissions was relatively small., The Japan Society of Mechanical Engineers
日本機械学会論文集Ｂ編, May 1998, [Reviewed]

Engine Performance and Exhaust Characteristics of Direct-injection Diesel Engine Operated with DME
S.Kajitani; Z.L.Chen; M.Konno; K.T. Rhee, In this report, the fundamental performances with retrofit diesel engine operated with dimethyl ether (DME) and CO2 blended DME (later it will be called as "Raw DME") was investigated by measuring engine performance, combustion characteristics and exhaust gas emissions. For the further reduction of NOx from the DME engine, in spray EGR method for reduction of NOx was conducted Namely CO2 blended raw DME was injected instead of neat DME for reduction of combustion temperature of the spray plume. The mass ratio of CO2 was 6, 11 and 22%. Findings of the present work include as follows:
(1) It was necessary to add a small amount of lubricating additives to neat DME or raw DME, if conventional fuel injection system is employed (2) Engine performance for diesel and neat DME fuels were basically comparable to each other, except for better energy conversion with neat DME at retarded injection timing. (3) In neat DME operated engine, emissions of soot and unburned hydrocarbons (THC) were almost negligible, however NOx emission was about the same as in diesel operation (4) The reduction of NOx emission by delaying the injection timing was highly significant with neat DME. (5) CO2 blended raw DME was also effective for further reduction of NOx because of its high specific heat and endothermic reaction when CO2 was separated from raw DME in the engine cylinder., TSINGHUA UNIVERSITY PRESS
SAE Transactions, Oct. 1997, [Reviewed]

過濃・高撹乱による黒煙およびNOxの同時低減に関する研究　　　　　　　　　　　　　　　
金野満; 太田裕彦; 近久武美; 村山正
自動車技術会論文集, Oct. 1995, [Reviewed]

過濃・高撹乱による黒煙およびNOxの同時低減に関する研究
金野満; 太田裕彦; 近久武美; 村山正
自動車技術会論文集, Oct. 1995, [Reviewed]

NO reduction characteristics of Pt ZSM-5 catalyst with diesel engine exhaust
Jianwei Guo; Mitsuru Konno; Takemi Chikahisa; Tadashi Murayama; Masakazu Iwamoto, The platinum ion-exchanged ZSM-5 zeolite catalyst (Pt-5), which reduces nitrogen oxides (NOx) in the presence of oxygen and hydrocarbons, was applied to actual diesel engine exhaust. Compared to the Cooper ion-exchanged ZSM-5 zeolite catalyst, the Pt-Z had higher NOx reduction efficiency, ηNOx = 33%, and lower activation temperature, 250°C, in normal engine operation. It was found that water in the exhaust gas did not apparently affect the NOx reduction, while the reduction efficiency was significantly affected by the aspect ratio of the catalyst reactor and by the shape of the catalyst, i.e. pellet or honeycomb. © 1995 Society of Automotive Engineers of Japan, Inc. and Elsevier Science B.V. All rights reserved.
JSAE Review, Feb. 1995, [Reviewed]

Analysis of NO formation characteristics and its control concepts in diesel engines from NO reaction kinetics
Takemi Chikahisa; Mitsuru Konno; Tadashi Murayama; Takuya Kumagai, This paper investigates NO formation characteristics in diesel engines with a variety of emission control concepts, and offers answers to basic question about NO reaction characteristics. The NO formation was calculated by Extended Zel'dovich Reaction Kinetics in a diffusion process. The results shows that the NO formation rate is independent of the mixing of combustion gas, and that internal EGR (combustion gas mixing in a cylinder) has no effect on NO reduction. It was found that NO is roughly proportional to the inverse of engine speeds. The paper also shows the potential of two stage combustion, and its effect strongly depends on the time-scale of mixing. © 1994.
JSAE Review, Nov. 1994, [Reviewed]

Performance and durability of Pt-MFI zeolite catalyst for selective reduction of nitrogen monoxide in actual diesel engine exhaust　　　　　　　　　　　　　　　
M. Iwamoto; H.Yahiro; H. K. Shin; M. Watanabe; J. Guo; M. Konno; T. Chikahisa; T. Murayama
Applied Catalysis, Sep. 1994, [Reviewed]

燃焼後期撹乱ディーゼル機関における最適化と黒煙低減過程
金野満; 太田裕彦; 近久武美; 村山正, Significant smoke reduction characteristics were previously reported for a D.I. diesel engine which has a turbulence generation cell. This paper presents an optimization and smoke reduction prcess in an engine with a turbulence generation cell. The effects of the cell volume and fuel quantity injected into the cell were investigated. Gas sampling and in-cylinder observation were performed to elucidate particulate formation and oxidation processes in the cylinder. The results showed that the system reduced smoke through two mechanisms: (1) promotion of particulate oxidation by strong turbulence generated from the cell during the later stage of the combustion period, (2)decreased fuel quantity injected into the main chamber. For the reduction of smoke and fuel consumption, the cell volume and a fuel amount injected into the cell should be limited to about 5% of the clearance volume and to 10% of the total fuel, respectively. When a larger amount of fuel is injected into the cell, smoke emission increases due to an increased amount of particulates in the turbulence generation cell., The Japan Society of Mechanical Engineers
日本機械学会論文集Ｂ編, Nov. 1993, [Reviewed]

An Investigation on the Simultaneous Reduction of Particulate and NOx by Controlling Both the Turbulence and the Mixture Formation in D.I. Diesel Engines
Mitsuru Konno; Takemi Chikahisa; Tadashi Murayama, This paper presents experimental results of the reduction of both particulate and NOx emitted from direct injection diesel engines by a two stage combustion process. The primary combustion is made very rich to reduce NOx and then the particulate is oxidized by strong turbulence generated during the secondary combustion. The rich mixture is formed by low pressure fuel injection and a small cavity combustion chamber configuration. The strong turbulence is generated by a jet of burned gas from an auxiliary chamber installed at the cylinder head. The results showed that NOx was reduced significantly while maintaining fuel consumption and particulate emissions. An investigation was also carried out on the particulate reduction process in the combustion chamber with the turbulence by gas sampling and in-cylinder observation with an optical fiber scope and a high speed camera. © Copyright 1993 Society of Automotive engineers, Inc.
SAE Paper, Oct. 1993, [Reviewed]

銅ゼオライト触媒によるディーゼルエンジン排気中のＮＯｘ低減
金野満; 小林雅律; 近久武美; 村山正; 岩本正和, Copper ion-exchanged ZSM-5 zeolite catalyst, which deoxidizes nitrogen oxides (NO_x) in the presence of oxygen and hydrocarbons, was applied to actual diesel engine exhaust. Copper ionexchanged ZSM-5 zeolite effectively reduced NO_x by 25% in normal engine operation, and by 80% when hydrocarbons in the exhaust were increased. Water in the exhaust gas decreased the NO_x reduction rate, but oxygen and sulfur appeared to have only a small effect. Maximum NO_x reduction was observed at 400℃ irrespective of hydrocarbon species, and did not decrease with space velocity up to values of 200001/h., The Japan Society of Mechanical Engineers
日本機械学会論文集Ｂ編, Apr. 1992, [Reviewed]

Catalytic reduction of NOx in actual diesel engine exhaust
Mitsuru Konno; Takemi Chikahisa; Tadashi Murayama; Masakazu Iwamoto, Copper ion-exchanged ZSM-5 zeolite catalyst, which reduces nitrogen oxides (NOx) in the presence of oxygen and hydrocarbons, was applied to actual diesel engine exhaust. Copper ion-exchanged ZSM-5 zeolite effectively reduced NOx by 25% in normal engine operation, and by 80% when hydrocarbons in the exhaust were increased. Water in the exhaust gas decreased the NOx reduction efficiency, but oxygen and sulfur appeared to have only a small effect. Maximum NOx reduction was observed at 400°C irrespective of hydrocarbon species, and did not decrease with space velocity up to values of 20,000 1/h. THE PURPOSE of this paper is to evaluate the possibilities and problems in catalytic reduction of NOx in actual diesel engine exhaust. Here, a copper ion-exchanged ZSM-5 zeolite (Cu-Z) catalyst was applied to diesel engine exhaust to examine the dependency of the NOx reduction efficiency on temperature and space velocity. The effects of oxygen, water and hydrocarbons were also examined. The reduction of NOx from diesel engine exhaust gas has become an important research topic in recent years. One of the obstacles to reducing NOx is that there is a tradeoff between NOx and particulates in diesel combustion. Although the overall level of these pollutants have been reduced through improvements in the combustion process, further reductions will be difficult to obtain because of this tradeoff effect. Recently, Iwamoto, et al. [1]-[3] and Held, et al. [4] have independently reported that copper ion-exchanged ZSM-5 zeolite (Cu-Z) is able to reduce NOx in the presence of oxygen, with hydrocarbons (HC) as the reducing agent. This catalyst has been shown to have a large reduction effect on synthesized gas which was modeled after diesel exhaust. Other catalysts such as proton-exchanged zeolite [51 and alumina [61J71 have been discovered to also be effective for reduction of NOx. These are all expected to be applicable as NOx reducing catalysts for diesel engines.
SAE Technical Papers, Feb. 1992, [Reviewed]

Reduction of smoke and NOx by strong turbulence generated during the combustion process in D.I. Diesel engines
Mitsuru Konno; Takemi Chikahisa; Tadashi Murayama, This paper presents results of experiments to reduce smoke emitted from direct Injection diesel engines by strong turbulence generated during the combustion process. The turbulence was created by jets of burned gas from an auxiliary chamber installed in the cylinder head. Strong turbulence, which was induced late in the combustion period, enhanced the mixing of air with unburned fuel and soot, resulting in a remarkable reduction of smoke and particulate
NOx did not show any increase with this system, and thermal efficiency was improved at high loads. The paper also shows that the combination of EGR and water injection with this system effectively reduces the both smoke and NOx. © Copyright 1992 Society of Automotive Engineers, Inc.
SAE Technical Papers, Feb. 1992, [Reviewed]

ディーゼル機関の燃焼後期撹乱による黒煙およびＮＯｘの同時低減に関する研究（第２報、燃焼後期撹乱、ＥＧＲ、および水噴射の併用による排気微粒子とＮＯｘとの低減）
金野満; 福田淳; 近久武美; 村山正, In the previous report, it was shown that generating strong turbulence late in the combustion period was very effective for the reduction of smoke. In the present report, the efforts were more concentrated on the reduction of NO_x. It was attempted to apply EGR and water injection into the intake manifold, as well as generating strong turbulence. As a result, it was found that strong turbulence combined with EGR in a partial load and with water injection in a heavy load greatly reduced smoke and NO_x simultaneously. The effects of this system on particulate emissions and its physical mechanism in smoke reduction were also discussed., The Japan Society of Mechanical Engineers
57, Feb. 1991, [Reviewed]

直噴式ディーゼル機関における燃焼及び噴射系の諸元と微粒子及び未燃炭化水素の排出特性
村山正; 近久武美; 山根浩二; 金野満, This paper investigates the effects of combustion and infection systems on HC and particulate emissions from a DI diesel engine with a dish type combustion chamber. Diesel particulate was sampled using a mini-dilution tunnel. Gaseous HC was analysed with gas chromatography, and the PAH in SOF in the particulates was measured with liquid chromatography. The results show that the emission characteristics of the deep dish type chamber greatly differs from those of the shallow dish type chamber, depending on the number of nozzles, injection direction, and swirl intensity. The HC analysis shows that the main constituents of gaseous HC are carbon number HC, and there is a tending towards increasing polynucleation PAH in SOF corresponding to the increase in soot formation. Additionally it was found that the particulate concentration can be expressed as an exponential function of the Bosch smoke density for a wide range of engine combustion conditions., The Japan Society of Mechanical Engineers
日本機械学会論文集Ｂ編, Jun. 1986, [Reviewed]

ディーゼル排気中の未燃炭化水素組成に関する研究
宮本登; 中園徹; 金野満; 村山正, 本論文においては,直噴式ディーゼル機関から排出される炭化水素を各成分ごとに測定し,燃焼条件の広範な変化,あるいは単組成燃料の使用などによって,その排出特性を解明するとともに,低減に対する指針を得ている.とくに,全炭化水素の排出量が,着火遅れに対して正の相関を有することと併せて,着火前および着火後に噴射される燃料の双方から発生する未燃分の和として考え得ることを明らかにしている。, The Japan Society of Mechanical Engineers
日本機械学会論文集Ｂ編, Feb. 1984, [Reviewed]

Combustion Characteristics of OME (Polyoxymethylene dimethyl ether) and the Possibility as an E-fuel of CI Engine
Mitsuru Konno; Yasuyuki Sakai
Journal of the Combustion Society of Japan, 15 Nov. 2021, [Reviewed], [Invited]
Lead

An Investigation of Injection and Combustion of Dimethylether Using high Pressure Injection System
Masaaki Kato; Takamasa Yokota; Jost Weber; Mitsuru Konno; Ernst Winklhofer; Karl Wieser; Hrwig Ofner; Gill Denis Walter
248th American Chemical Society National Meeting & Exposition, 10 Aug. 2014, [Reviewed]

代替燃料エンジン　　　　　　　　　　　　　　　
自動車技術年鑑, 08 Jul. 2014

その他の動力
後藤新一; 金野満; 平瀬裕介; 森本賢治; 濱口和洋; 後藤慎吾; 山根浩二
自動車技術, Aug. 2013, [Reviewed]

DME(ジメチルエーテル)の燃料・噴霧特性 －エネルギー多様化に対応する合成燃料－
金野 満; 梶谷修一
日本マリンエンジニアリング学会誌第47巻第6号，88-93, Nov. 2012, [Reviewed]

2010年度のエンジンシステムを取り巻く状況と研究の動向
金野 満
日本機械学会誌, 05 Aug. 2011

Fuel Properties and Engine Performance of Dimethyl Ether Blended Biodiesel Fuels
Takeshi Okamoto; Toshihiro Nakasato; Mitsuru Konno
SAE Paper, Jul. 2007, [Reviewed]

エンジン解析：熱発生率解析
金野 満
自動車技術会誌, Apr. 2005, [Reviewed], [Invited]

HCCI Combustion FUeled with DME　　　　　　　　　　　　　　　
JSAE SYMPOSIUM,Next Generation FUel and COmbustion/After Treatment and Lubricant, 03 Feb. 2004, [Invited]

HCCI of Natural Gas
中園 徹; 金野 満
Engine Technology, Feb. 2004, [Reviewed]

DMEを主燃料とする予混合圧縮着火燃焼の反応機構と制御
金野満
日本機械学会年次大会講演資料集, 2002, 2002

スィートソルガムの活用 －全国の耕作放棄地などがエタノール油田に変わる－　　　　　　　　　　　　　　　
池田幸雄; 金野満, Joint work
茨城新聞 出版部, 15 Dec. 2013
9784872732818

EAS-ERIA,Biodiesel Fuel Trade Handbook: 2010　　　　　　　　　　　　　　　
S.Goto; M.Konno(13th; listed in an; alphabetical order); et. al., Joint work
ERIA Research Project Working Group on,"Benchmarking of Biodiesel FuelStandardization in East Asia", Jul. 2010

EAS-ERIA Biodiesel Fuel Trade Handbook: 2010　　　　　　　　　　　　　　　
S.Goto; M.Konno; listed in an; alphabetical order; et. al, Joint work
ERIA Research Project Working Group on "Benchmarking of Biodiesel FuelStandardization in East Asia", Jul. 2010

新エネルギー自動車の開発と材料（普及版）　　　　　　　　　　　　　　　
金野 満, Joint work
シーエムシー, Nov. 2006

DMEハンドブック　　　　　　　　　　　　　　　
藤本薫; 大野陽太郎; 梶谷修一; 後藤新一; 金野満; 鹿田勉; 鈴木信市, Editor
オーム社, Apr. 2006

新エネルギー自動車の開発と材料　　　　　　　　　　　　　　　
金野 満, Joint work
シーエムシー, Jul. 2001

ポストコロナ社会における大学教員の働き方を探りたい ～業務見える化シートの開発～　　　　　　　　　　　　　　　
梶野顕明、鈴木和美、平山太市、間宮るい、酒井宗寿、藤澤清史、鈴木義人、金野満
RA協議会, 14 Sep. 2021, RA協議会
20210914, 20210915

希薄条件におけるバイオ混合ガソリンの自着火特性　　　　　　　　　　　　　　　
石貝大樹; 木内 祥太; 成毛 政貴; 境田 悟志; 田中 光太郎; 金野 満
2020年度日本機械学会年次大会, 16 Sep. 2020, 日本機械学会
20200913, 20200916

冷間始動時の EGR 導入を模擬した腐食実験によるガソリン火花点火機関の筒内腐食メカニズムの検討　　　　　　　　　　　　　　　
森江 康柄; 甲田 隆晟; 境田 悟志; 田中 光太郎; 金野 満
2020年度 日本機械学会年次大会, 16 Sep. 2020, 日本機械学会
20200913, 20200916

流通反応装置を用いたカルシウムスルホネートからのアッシュ生成メカニズムに関する研究　　　　　　　　　　　　　　　
石井 雄大; 横林 佑亮; 境田 悟志; 田中 光太郎; 金野 満; 酒井 康行
2020 年度 日本機械学会年次大会, 14 Sep. 2020, 日本機械学会
20200913, 20200916

PEFC 用ガス拡散層の濡れ性分布が発電性能におよぼす影響　　　　　　　　　　　　　　　
髙橋 佑理; 境田 悟志; 田中 光太郎; 金野 満
2020年度 日本機械学会年次大会, 14 Sep. 2020, 日本機械学会
20200913, 20200916

PEFC ガス拡散層における格子ボルツマン法を用いた蒸発を伴う二相流解析　　　　　　　　　　　　　　　
長山 龍也; 境田 悟志; 田中 光太郎; 金野 満
2020年度 日本機械学会年次大会, 14 Sep. 2020, 日本機械学会
20200913, 20200916

実機相当雰囲気場におけるOMEの噴霧特性　　　　　　　　　　　　　　　
若林森音; 高田竜平; 境田悟志; 田中光太郎; 金野満
第30回内燃機関シンポジウム, 12 Dec. 2019, 自動車技術会、日本機械学会
20191210, 20191212

燃料の着火特性が超希薄条件におけるノックに及ぼす影響　　　　　　　　　　　　　　　
成毛政貴; 森江康柄; 境田悟志; 田中光太郎; 金野満
第30回内燃機関シンポジウム, 10 Dec. 2019, 自動車技術会、日本機械学会
20191210, 20191212

中赤外量子カスケードレーザーを用いたイソオクタンの自着火過程における過酸化水素計測　　　　　　　　　　　　　　　
菅野真也; 横田直也; 齋藤秀明; 境田悟志; 田中光太郎; 金野満
第57回燃焼シンポジウム, 22 Nov. 2019, 日本燃焼学会
20191120, 20191122

フラン混合ガソリンの自着火特性に関する研究　　　　　　　　　　　　　　　
木内祥大; 舟橋智哉; 境田悟志; 田中光太郎; 金野満
第57回燃焼シンポジウム, 22 Nov. 2019, 日本燃焼学会
20191120, 20191122

高濃度酸素吸気が火花点火機関の機関性能に及ぼす影響　　　　　　　　　　　　　　　
成毛政貴; 境田悟志; 田中光太郎; 金野満; 山田裕之; 小畠健; 古関恵一
第57回燃焼シンポジウム, 21 Nov. 2019, 日本燃焼学会
20191120, 20191122

ノルマルヘプタンとアルケン類の複合燃料を用いたHCCI燃焼に関する実験的研究　　　　　　　　　　　　　　　
佐藤和樹; 細谷竜太; 堀川諒太; 境田悟志; 田中光太郎; 金野満
第27回茨城講演会, 22 Aug. 2019, 日本機械学会関東支部
20190822, 20190822

急速圧縮装置を用いたバイオ燃料混合ガソリンの自着火特性に関する研究　　　　　　　　　　　　　　　
舟橋知哉; 木内祥太; 成毛政貴; 境田悟志; 田中光太郎; 金野満
第27回茨城講演会, 22 Aug. 2019, 日本機械学会関東支部
20190822, 20190822

NTC領域における燃料の着火特性の違いがノックに及ぼす影響　　　　　　　　　　　　　　　
成毛政貴; 境田悟志; 田中光太郎; 金野満
第29回内燃機関シンポジウム, 27 Nov. 2018, 日本機械学会、自動車技術会
20181126, 20181128

中赤外吸収分光法を用いたイソオクタンの自着火過程におけるホルムアルデヒドの定量計測　　　　　　　　　　　　　　　
菅野真也; 永田大弥; 境田悟志; 田中光太郎; 金野満
第56回燃焼シンポジウム, 16 Nov. 2018, 日本燃焼学会
20181114, 20181116

中赤外量子カスケードレーザーを用いた過酸化水素計測装置の開発　　　　　　　　　　　　　　　
横田直也; 境田悟志; 田中光太郎; 金野満
第56回燃焼シンポジウム, 15 Nov. 2018, 日本燃焼学会
20181114, 20181116

バイオ燃料混合が高圧縮比ガソリンエンジンにおけるノックに及ぼす影響　　　　　　　　　　　　　　　
成毛政貴; 境田悟志; 田中光太郎; 金野満
第56回燃焼シンポジウム, 14 Nov. 2018, 日本燃焼学会
20181114, 20181116

急速圧縮装置を用いた潤滑油を添加した際の炭化水素の着火遅れ時間計測　　　　　　　　　　　　　　　
和知裕亮; 田中光太郎; 金野満; Jiang Ying; 酒井康行
第28回内燃機関シンポジウム, 08 Dec. 2017, 自動車技術会、日本機械学会
20171206, 20171208

DME燃料噴射ノズルのチョーク現象に関する実験的および数値解析的考察　　　　　　　　　　　　　　　
菊地真輔; 高田竜平; 田中光太郎; 金野満
第28回内燃機関シンポジウム, 06 Dec. 2017, 自動車技術会、日本機械学会
20171206, 20171208

エタノール添加がガソリンサロゲート燃料の自着火特性に及ぼす影響　　　　　　　　　　　　　　　
吉田翔一; 成毛政貴; 和知裕亮; 船橋知哉; 田中光太郎; 金野満
第55回燃焼シンポジウム, 15 Nov. 2017, 日本燃焼学会
20171113, 20171115

超臨界DME燃焼噴霧の光学観察　　　　　　　　　　　　　　　
王理堃; 高田竜平; 菊地真輔; 田中光太郎; 金野満
第25回茨城講演会, 29 Aug. 2017, 日本機械学会関東支部
20170829, 20170829

燃料噴射弁ノズル出口におけるDMEの噴射速度計測　　　　　　　　　　　　　　　
高田竜平; 菊地真輔; 田中光太郎; 金野満
第25回茨城講演会, 29 Aug. 2017, 日本機械学会関東支部
20170829, 20170829

異なる反応性を持つ低級アルカン類の混合がノルマルヘプタンHCCIの着火に及ぼす影響　　　　　　　　　　　　　　　
細谷竜太; 田岡一路; 大橋耕一; 田中光太郎; 金野満
第25回茨城講演会, 29 Aug. 2017, 日本機械学会関東支部
20170829, 20170829

小型多重反射セルを用いた微量燃焼排出物計測装置の開発　　　　　　　　　　　　　　　
田中 光太郎; 宮村 芽維; 秋島 一志; 金野 満; 児島 涼太; 戸野倉 賢一
第51回燃焼シンポジウムD321, 06 Dec. 2013

三次元ガソリンエンジンシミュレーションを用いたサイクル変動予測手法の研究　　　　　　　　　　　　　　　
久保田俊一; 田中光太郎; 金野 満
第24回内燃機関シンポジウム19-20137084, 28 Nov. 2013

電子制御スロットルボディに付着するデポジットの生成機構に関する研究 -デポジット付着パターンの解析と成分分析-　　　　　　　　　　　　　　　
初沢英文; 田中光太郎; 金野 満
第24回内燃機関シンポジウム19-20137054, 27 Nov. 2013

異なる酸化反応特性を持つ二燃料を用いたHCCI燃焼に関する研究　　　　　　　　　　　　　　　
前島 亨; 大川恵里; 田中光太郎; 金野 満
第24回内燃機関シンポジウム19-20137049, 26 Nov. 2013

実機相当雰囲気場における噴霧観察と３次元数値解析によるDME噴霧の総合的理解　　　　　　　　　　　　　　　
三村 昂; 若林大輝; 田中光太郎; 金野 満; 石井義範
第24回内燃機関シンポジウム19-20137002, 26 Nov. 2013

新規バイオ燃料候補であるフラン類の自着火特性　　　　　　　　　　　　　　　
磯部 直澄; 岡田 陵佑; 金野 満; 田中 光太郎
自動車技術会秋季学術講演会, 25 Oct. 2013

水素化バイオ燃料の混合が軽油の圧力固化特性に及ぼす影響　　　　　　　　　　　　　　　
與那覇政樹; 松本貴行; 田中光太郎; 金野満
日本機械学会2013年年度年次大会CD-ROM，G071041, 11 Sep. 2013

エタノール混合燃料の自着火特性　　　　　　　　　　　　　　　
岡田陵佑; 岩村文恵; 田中光太郎; 金野満
日本機械学会2013年年度年次大会CD-ROM，G071042, 11 Sep. 2013

近赤外レーザー吸収分光法による亜酸化窒素とアンモニアの計測　　　　　　　　　　　　　　　
高野雅俊; 金野満; 田中光太郎
日本機械学会2013年年度年次大会CD-ROM，G071053, 11 Sep. 2013

直噴方式による既存天然ガスエンジンの燃焼改善の可能性　　　　　　　　　　　　　　　
大友拓哉; 文石洙; 辻村拓; 金野満; 田中光太郎; 溝渕剛史
日本機械学会2013年年度年次大会CD-ROM，G071021, 09 Sep. 2013

実機相当の高温高圧場におけるDME燃焼噴霧の高速度観察　　　　　　　　　　　　　　　
若林大輝; 海老原秀樹; 三村昂,孫敬; 田中光太郎; 金野満
日本機械学会2013年年度年次大会CD-ROM，G071024, 09 Sep. 2013

天然ガス/軽油の二元燃料方式ディーゼル機関の燃焼改善に関する化学反応速度論的解析　　　　　　　　　　　　　　　
吉田 昭洋; 辻村 拓; 恩田 友和; 金野 満; 西島 義明
日本機械学会茨城講演会講演論文集,135-136, 06 Sep. 2013

自動車から排出される二酸化炭素の安定炭素同位体比　　　　　　　　　　　　　　　
環境工学シンポジウム2013 講演論文集 P.172-174, 11 Jul. 2013

三次元シミュレーションを用いた多気筒ガソリンエンジンの気筒間ばらつきの要因解析　　　　　　　　　　　　　　　
久保田俊一; 金野満
日本機械学会関東支部第19期総会講演会, 16 Mar. 2013, 日本機械学会関東支部

近赤外レーザー吸収分光法を用いたエンジン排気中の亜酸化窒素計測　　　　　　　　　　　　　　　
高野雅俊; 金野満; 田中光太郎
関東学生会第52回学生員卒業研究発表講演会, 15 Mar. 2013, 日本機械学会関東支部

半導体レーザー吸収分光法を用いた自動車排気中の二酸化炭素安定炭素同位体計測　　　　　　　　　　　　　　　
第50回燃焼シンポｼﾞｳﾑ講演論文集，B232，240-241, 06 Dec. 2012, 燃焼学会

燃料の酸化反応特性が複合燃料HCCI燃焼に及ぼす影響　　　　　　　　　　　　　　　
前島亨; 江口貴啓; 田中光太郎; 金野満
第23回内燃機関シンポジウム講演論文集CD-ROM,B2-06，1-10, 01 Nov. 2012, 自動車技術会，日本機械学会

天然ガス・軽油の二元燃料方式ディーゼル機関の燃焼改善に関する研究―UHC排出に対するホットEGR適用の効果―　　　　　　　　　　　　　　　
恩田友和; 辻村拓; 栗本直規; 西島義明; 金野満
日本機械学会2012年度年次大会講演論文集,No.12-1, 12 Sep. 2012, 日本機械学会

急速圧縮装置を用いたエタノール詳細素反応モデルの検討　　　　　　　　　　　　　　　
岩村文恵; 田中光太郎; 金野満
日本機械学会茨城講演会,No.120-2,pp.67-68, 24 Aug. 2012, 日本機械学会関東支部

水素添加バイオ燃料が軽油の低温流動性に与える影響　　　　　　　　　　　　　　　
松本貴行; 田中光太郎; 青柳雄三; 金野満
日本機械学会茨城講演会講演論文集,No.120-2,pp.69-71, 24 Aug. 2012, 日本機械学会関東支部

実機相当雰囲気場におけるDME噴霧の超高速度撮影　　　　　　　　　　　　　　　
三村昂; 海老原秀樹; 田中光太郎; 金野満
日本機械学会茨城講演会講演論文集,No.120-2,pp.79-80, 24 Aug. 2012, 日本機械学会関東支部

HCCI運転限界に及ぼす燃料の酸化特性の影響―トルエンとメタンの比較　　　　　　　　　　　　　　　
木村優介; 江口貴啓; 松澤聡; 金野満
第22回内燃機関シンポジウム講演論文集,pp565-570,20117051, 01 Dec. 2011

実機相当の雰囲気条件におけるエタノールの自着火特性　　　　　　　　　　　　　　　
中庭大輔; 岩村文恵; 金野満
第22回内燃機関シンポジウム講演論文集,pp369-374,20117079, 30 Nov. 2011

DME 噴霧のノズル近傍観察とKIVA-3V による数値解析　　　　　　　　　　　　　　　
徳田 龍人; 水田 勝大; 海老原 秀樹; 金野 満
自動車技術会秋季学術講演会, 20115712, 12 Oct. 2011, 自動車技術会

超臨界DMEを用いたセルロース系バイオマスの前処理に関する研究　　　　　　　　　　　　　　　
後藤遼; 安部崇志; 金野満
日本機械学会年次大会講演論文集CD,No.11-1,G070061, 14 Sep. 2011

DME酸化簡略化反応モデルの構築　　　　　　　　　　　　　　　
徳田龍人; 水田勝大; 金野満
日本機械学会年次大会講演論文集CD,No.11-1,G070051, 14 Sep. 2011

燃料構造に起因する高温酸化特性が熱発生速度に及ぼす影響　　　　　　　　　　　　　　　
江口貴啓; 木村優介; 金野満
日本機械学会年次大会講演論文集CD,No.11-1,G080022, 13 Sep. 2011

Ultra-high speed observation of DME spray　　　　　　　　　　　　　　　
Future Power-train Technology and Fuel Issues, 06 Sep. 2011, AIST, [Invited]

DMCの着火特性と軽油HCCI燃焼への応用　　　　　　　　　　　　　　　
松本貴行; 木村優介; 金野満
日本機械学会茨城講演会講演論文集,No.110-2,pp.47-48, 26 Aug. 2011, 日本機械学会関東支部

ノズル近傍におけるDME噴霧の超高速度・微視的観察　　　　　　　　　　　　　　　
海老原秀樹; 徳田龍人; 金野満
日本機械学会茨城講演会講演論文集,No.110-2,pp.51-52, 26 Aug. 2011

異なる酸化反応機構を持つ燃料の組合せによるHCCI燃焼の運転範囲拡大 第二報 モデルの改良と残留ガス中のNOの影響　　　　　　　　　　　　　　　
松澤聡; 木村優介; 金野満
日本機械学会2010年度年次大会講演論文集Vol.7,pp191-192, 07 Sep. 2010

早期噴射による二元燃料ディーゼル機関の希薄燃焼に関する研究　　　　　　　　　　　　　　　
島田亮; 辻村拓; 青柳賢司; 栗本直規; 武田英人; 西島義明; 金野満
日本機械学会2010年度年次大会講演論文集Vol.7,pp169-170, 06 Sep. 2010

超臨界雰囲気におけるDME噴霧特性の実験的解明　　　　　　　　　　　　　　　
中村健; 水田勝大; 徳田龍人; 金野満
日本機械学会茨城講演会講演論文集,No.100-2,pp.57-58, 27 Aug. 2010

KIVA-3Vを用いた超臨界雰囲気におけるDME噴霧特性の解明　　　　　　　　　　　　　　　
徳田龍人; 水田勝大; 中村健; 金野満
日本機械学会茨城講演会講演論文集,No.100-2,pp.59-60, 27 Aug. 2010

DME燃焼のCO生成特性　　　　　　　　　　　　　　　
村松雄也; 野内忠則; 小熊光晴; 金野満
日本機械学会茨城講演会講演論文集,No.100-2,pp.63-64, 27 Aug. 2010

トルエンHCCI燃焼におけるDME点火の影響　　　　　　　　　　　　　　　
木村優介; 松澤聡; 金野満
日本機械学会茨城講演会講演論文集,No.100-2,pp.67-68, 27 Aug. 2010

バイオエタノールの予混合圧縮着火燃焼への応用　　　　　　　　　　　　　　　
中庭大輔; 佐藤良祐; 金野満
日本機械学会茨城講演会講演論文集,No.100-2,pp.69-70, 27 Aug. 2010

超臨界DMEを用いた木質系バイオマスの前処理に関する研究　　　　　　　　　　　　　　　
後藤遼; 加藤綾太; 金野満
日本機械学会茨城講演会講演論文集,No.100-2,pp.81-82, 27 Aug. 2010

超臨界雰囲気におけるDME噴霧特性　　　　　　　　　　　　　　　
水田勝大; 中村健; 金野満; 岡本毅
自動車技術会2010春季大会学術講演会前刷集,No.43-10,pp.1-4,20105447, May 2010

DME圧縮着火機関における未燃成分排出量低減に関する研究　　　　　　　　　　　　　　　
野内忠則; 村松雄也; 金野満; 小熊光晴; 辻村拓; 後藤新一
自動車技術会2010春季大会学術講演会前刷集,No.43-10,pp.5-9,20105425, May 2010

二元燃料方式を用いたディーゼル機関の燃焼および排気特性－軽油噴霧制御による天然ガス燃焼の改善－　　　　　　　　　　　　　　　
島田 亮; 辻村 拓; 栗本 直規; 武田 英人; 西島 義明; 金野 満; 後藤 新一
自動車技術会2009年秋季学術講演会前刷集,No.117-09,pp.5-8,20095763, Oct. 2009

圧縮着火燃焼におけるEGRの化学的効果　　　　　　　　　　　　　　　
佐藤良祐; 三崎友寛; 金野満
第20回内燃機関シンポジウム講演論文集,pp229-234,20090033, Sep. 2009

米油メチルエステルおよびDME混合燃料を用いたディーゼル機関の燃焼特性　　　　　　　　　　　　　　　
加藤綾太; 金野満
日本機械学会茨城講演会講演論文集,No.090-2,pp.111-112, Aug. 2009

KIVAによるDME噴霧の解析（分裂長さに関する検討）　　　　　　　　　　　　　　　
千葉和貴; 岡本毅; 金野満
日本機械学会関東支部総会講演会講演論文集，No.090-1，pp.263-264，20508, Mar. 2009

DME燃焼ボイラにおける輻射向上の試み　　　　　　　　　　　　　　　
保坂洋; 金野満; 小林雅律
日本機械学会関東支部総会講演会講演論文集，No.090-1，pp.281-282，20517, Mar. 2009

燃料噴射圧力の高圧化がDME噴霧特性に及ぼす影響　　　　　　　　　　　　　　　
岡本毅; 千葉和貴; 金野満
自動車技術会2008年度秋季大会学術講演会前刷集,No.131-08,pp.1-6，20085829, Oct. 2008

KIVAによるDME噴霧の数値解析　　　　　　　　　　　　　　　
千葉和貴; 岡本毅; 金野満
自動車技術会2008年度秋季大会学術講演会前刷集,No.131-08,pp.7-13，20085843, Oct. 2008

DME/空気予混合圧縮着火燃焼における低温酸化反応特性　　　　　　　　　　　　　　　
佐藤良祐; 金野満
日本機械学会茨城講演会講演論文集 No.080-2,pp101-102, Sep. 2008

蓄エネルギ式可変バルブタイミングシステムによるPCI機関の運転範囲拡大　　　　　　　　　　　　　　　
飛田直樹; 宮下将; 金野満
日本機械学会茨城講演会講演論文集 No.080-2,pp109-110, Sep. 2008

米由来廃棄バイオマスのボイラ用燃料資源化　　　　　　　　　　　　　　　
保坂洋; 金野満
日本機械学会茨城講演会講演論文集 No.080-2,pp111-112, Sep. 2008

メタン／空気HCCI燃焼に及ぼすNOおよびNH3共存の影響　　　　　　　　　　　　　　　
佐藤良祐; 目崎彰; 高木利憲; 金野満
日本機械学会2008年度年次大会講演論文集, Aug. 2008

米由来残渣バイオマスの燃料資源化-米油メチルエステルの燃料性状と燃焼・排気特性-　　　　　　　　　　　　　　　
加藤綾太; 岡本毅; 金野満
日本機械学会2008年度年次大会講演論文集Vol.7, Aug. 2008

DME噴霧の内部構造の解析　　　　　　　　　　　　　　　
佐藤晋哉; 辻村拓; 横山啓太; 金野満; 後藤新一
自動車技術会2007年度秋季大会学術講演会前刷集,No.88-07,pp.25-28，20075894, Oct. 2007

菜種油メチルエステルを燃料とする小型汎用DI ディーゼルエンジンのカーボンデポジット生成特性および低沸点成分混合の影響　　　　　　　　　　　　　　　
阿部 俊之; 岡本 毅; 金野 満; 青柳 友三; 石井 素; 川野 大輔
自動車技術会2007年度秋季大会学術講演会前刷集,No.147-07,pp.17-20，20075858, Oct. 2007

油圧駆動可変バルブタイミング機構の開発（第四法 PCCI期間の燃焼制御への応用）　　　　　　　　　　　　　　　
新修典; 宮下将; 飛田直樹; 金野満; 陳之立
日本機械学会2007年度年次大会講演論文集Vol.3,pp.189-190, Sep. 2007

菜種油メチルエステル噴霧の蒸発特性の改善に関する研究　　　　　　　　　　　　　　　
岡本毅; 金野満; 川野大輔; 石井素; 野田明
日本機械学会2007年度年次大会講演論文集Vol.3,pp.195-196, Sep. 2007

蓄エネルギ式可変バルブタイミングシステムによるHCCI機関運転範囲拡大　　　　　　　　　　　　　　　
飛田直樹; 新修典; 宮下将; 金野満
日本機械学会茨城講演会講演論文集No.070-3,pp99-100, Sep. 2007

3次元カム式可変バルブタイミングシステムの開発　　　　　　　　　　　　　　　
宮下将; 須賀洸毅; 金野満; 栗林定友
日本機械学会茨城講演会講演論文集No.070-3,pp.101-102, Sep. 2007

パーム油由来燃料の凝固特性及び低温流動性の改善に関する研究　　　　　　　　　　　　　　　
保坂洋; 阿部俊之; 岡本毅; 金野満
日本機械学会茨城講演会講演論文集No.070-3,pp.103-104, Sep. 2007

メタン／空気予混合圧縮着火燃焼に及ぼすNOの影響　　　　　　　　　　　　　　　
高木利憲; 土舘力; 金野満
日本機械学会茨城講演会講演論文集No.070-3,pp.104-105, Sep. 2007

電磁駆動エンジンバルブの高速化の試み　　　　　　　　　　　　　　　
宇野聖人; 村口洋介; 金野満; 岡田養二
日本機械学会第10回｢運動と振動の制御｣シンポジウム講演論文集，No07-13,pp.117-180, Aug. 2007

過給がディーゼル燃焼に及ぼす効果の研究(第1報 無過給と過給の燃焼比較)　　　　　　　　　　　　　　　
大塚友之; 金野満; 青柳友三; 長田英明; 山口卓也
第19回内燃機関シンポジウム, Jan. 2007

高温酸化反応の制御に関する化学反応論的考察　　　　　　　　　　　　　　　
金野満; 高木利憲; 土舘力
第19回内燃機関シンポジウム, Jan. 2007

油圧駆動可変バルブタイミング機構の開発(第三報 HCCI運転範囲拡大の試み)　　　　　　　　　　　　　　　
新修典; 宮下勝; 金野満; 岡田養二; 陳之立
日本機械学会2006年度年次大会, Sep. 2006

DME減圧沸騰噴霧特性に関する研究(第2報:臨界温度･圧力以上の噴霧特性)　　　　　　　　　　　　　　　
辻村拓; 横山啓太; 金野満; 後藤新一
日本機械学会2006年度年次大会, Sep. 2006

DME減圧沸騰噴霧特性に関する研究(第1報:臨界温度･圧力以下の噴霧特性)　　　　　　　　　　　　　　　
辻村拓; 横山啓太; 金野満; 後藤新一
日本機械学会2006年度年次大会, Sep. 2006

バイオ燃料の低温流動性改善に関する研究（PME混合燃料の圧力凝固特性）　　　　　　　　　　　　　　　
岡本毅; 金野満; 川野大輔; 石井素; 青柳友三
日本機械学会2006年度年次大会, Sep. 2006

蓄エネルギ式可変バルブシステムによるHCCI燃焼の運転範囲の拡大　　　　　　　　　　　　　　　
宮下将; 新修典; 金野満
日本機械学会2006年度年次大会茨城講演会, Sep. 2006

メタン／空気予混合気の圧縮着火過程に及ぼす共存物質の影響　　　　　　　　　　　　　　　
高木利憲; 米山佳之; 金野満
日本機械学会2006年度年次大会茨城講演会, Sep. 2006

直接噴射式単気筒ディーゼル機関の燃焼に噴射系が与える影響　　　　　　　　　　　　　　　
大塚友之; 金野満; 青柳友三; 長田英朗
日本機械学会2006年度茨城講演会, Sep. 2006

予混合圧縮着火過程に及ぼす共存成分の影響(第二報)　　　　　　　　　　　　　　　
金野満; 米山佳之; 高木利憲; 陳之立
自動車技術会2006年春季大会学術講演会, Apr. 2006

メタン/空気予混合圧縮着火燃焼に及ぼすCO共存の影響-モデルの比較と実験による検証-　　　　　　　　　　　　　　　
米山佳之; 高木利憲; 金野 満
日本機械学会茨城講演会講演論文集, Sep. 2005

DME噴霧の数値解析-実験結果との比較-　　　　　　　　　　　　　　　
浅野正仁; 金野 満; 小熊光晴; 後藤新一
日本機械学会茨城講演会講演論文集, Sep. 2005

LIF法によるDMEバーナ火炎の分析　　　　　　　　　　　　　　　
横山啓太; 金野 満; 小熊光晴; 後藤新一
日本機械学会茨城講演会講演論文集, Sep. 2005

油圧駆動可変バルブタイミング機構の開発(第一報:開発のコンセプトとベンチテスト)　　　　　　　　　　　　　　　
三田拓朗; 庄司喜代隆; 陳 之立; 金野 満
日本機械学会2005年度年次大会講演論文集, Sep. 2005

高圧条件におけるBDFの凝固特性　　　　　　　　　　　　　　　
岡本 毅; 金野 満; 石井 素; 野田 明
日本機械学会2005年度年次大会講演論文集, Sep. 2005

油圧駆動可変バルブタイミング機構の開発(第二報: HCCI機関の燃焼制御への応用)　　　　　　　　　　　　　　　
新 修典; 杉原洋一; 金野 満; 岡田養二; 陳 之立
日本機械学会2005年度年次大会講演論文集, Sep. 2005

茨城大学機械工学科におけるデザイン教育－“ものづくり創造教育プロジェクト”について－　　　　　　　　　　　　　　　
金野満; 伊藤伸英; 増澤徹; 柴田隆行
日本機械学会関東支部ブロック合同講演会講演論文集, Sep. 2005

茨城大学機械工学科におけるデザイン教育－“ものづくり創造教育プロジェクト”について－　　　　　　　　　　　　　　　
金野満; 伊藤伸英; 増澤徹; 柴田隆行
日本機械学会関東支部ブロック合同講演会, Sep. 2005

自動車エンジン用電磁駆動バルブの研究　　　　　　　　　　　　　　　
布施博正; 金野 満; 岡田養二
日本機械学会D&D，2005CD-ROM論文集, Aug. 2005

GTL軽油が運転限界域で示すエンジン性能と排気特性　　　　　　　　　　　　　　　
椿山 亨; 小熊光晴; 後藤新一; 金野 満; 松原秀樹
自動車技術会2005年春季大会学術講演会前刷集, May 2005

予混合圧縮着火過程に及ぼす共存成分の影響　　　　　　　　　　　　　　　
金野 満; 米山佳之; 石田憲之; 陳 之立
自動車技術会2005年春季大会学術講演会前刷集, May 2005

パームメチルエステル/DME複合燃料ディーゼル機関における性状および燃焼に関する研究　　　　　　　　　　　　　　　
中里俊洋; 岡本毅; 金野満
自動車技術会2004年秋季大会学術講演会前刷集, Oct. 2004

DME噴霧数値解析のための物性推算法　　　　　　　　　　　　　　　
浅野正仁; 金野満; 後藤新一
日本機械学会2004年度年次大会講演論文集, Sep. 2004

DMEの水に対する溶解度　　　　　　　　　　　　　　　
小川真由美; 金野満; 陳之立; 堤泰行
日本機械学会2004年度年次大会講演論文集, Sep. 2004

ホルムアルデヒド添加による予混合圧縮着火燃焼の制御　　　　　　　　　　　　　　　
米山佳之; 三木健太郎; 金野満
日本機械学会2004年度年次大会講演論文集, Sep. 2004

同一燃料噴射圧力におけるジメチルエーテルと軽油噴霧の比較　　　　　　　　　　　　　　　
高安紘之; 金野満
日本機械学会茨城講演会講演論文集, Sep. 2004

予混合圧縮着火燃焼制御のための蓄エネルギ式可変バルブシステムの開発　　　　　　　　　　　　　　　
杉原洋一; 新修典; 金野満; 陳之立
日本機械学会茨城講演会講演論文集, Sep. 2004

電磁駆動バルブの高性能化の研究　　　　　　　　　　　　　　　
布施博正; 岡田養二; 松田健一; 金野満
日本機械学会茨城講演会講演論文集, Sep. 2004

ＤＭＥ圧縮点火機関における出力向上のための分割噴射に関する研究　　　　　　　　　　　　　　　
金子純子; 梶谷 修一; 竹田 将之; 金野 満
日本機械学会茨城講演会講演論文集, Sep. 2004

DMEの燃料特性と利用技術　　　　　　　　　　　　　　　
金野 満
日本機械学会2003年度年次大会講演資料集, Aug. 2003, [Invited]

高温高圧下におけるDME噴霧特性　　　　　　　　　　　　　　　
金野 満; 陳 之立; 梶谷修一; 松井啓貴; 小熊光晴; 後藤新一
自動車技術会2003年春季大会学術講演会前刷集, May 2003

DMEを主燃料とする予混合圧縮着火燃焼の反応機構と制御　　　　　　　　　　　　　　　
金野 満
日本機械学会2002年度年次大会講演資料集, Sep. 2002, [Invited]

1995 - 2020
茨城大学

茨城大学

茨城大学

茨城大学

茨城大学

茨城大学

茨城大学

2009, 燃焼学会

日本機械学会

JSAE

SAE

日本設計工学会

もったいない学会

ガソリン燃焼室のデポジット堆積モデル構築　　　　　　　　　　　　　　　
Apr. 2021 - Feb. 2022

Ultra high-efficiency clean combustion engine fueled with DME
Grant-in-Aid for Scientific Research (C)
Ibaraki University
01 Apr. 2017 - 31 Mar. 2021

(JST)急速圧縮装置による実ノック条件を想定したガソリンの着火　　　　　　　　　　　　　　　
Apr. 2016 - Mar. 2017

Basic research on utilizing dimethyl ether as an alternative synfuel to oil
Grant-in-Aid for Scientific Research (C)
Ibaraki University
01 Apr. 2012 - 31 Mar. 2015

Development of Electromagnetic Valve Actuator and Application to Combustion Control of Automobile Engine
Grant-in-Aid for Scientific Research (B)
IBARAKI UNIVERSITY
2005 - 2006

The research on the fuel composition of the ultra lean mixture for C.I.engines
Grant-in-Aid for Scientific Research (C)
IBARAKI UNIVERSITY
1997 - 1998

Theoretical Investigation and Its validation of Unsteady State Combustion Phenomena in Limited Non-Uniform Space
Grant-in-Aid for General Scientific Research (C)
HOKKAIDO UNIVERSITY
1994 - 1995

銅ゼオライト触媒を用いた高酸素雰囲気内NOx選択還元による排気浄化法に関する研究
奨励研究(A)
北海道大学
1993 - 1993

2004-263582, 内燃機関の弁駆動装置

特許平07-026959, ディーゼル機関

特許平07-026960, ディーゼル機関

特許第3315484号, ディーゼル機関

日立市中小企業脱炭素経営促進コンソーシアム協議会座長　　　　　　　　　　　　　　
organizing_member
May 2022 - Present

茨城県産業技術イノベ―ション研究会顧問　　　　　　　　　　　　　　
organizing_member
Apr. 2022 - Present

公益財団法人日立地区産業支援センター評議員　　　　　　　　　　　　　　
organizing_member
Jun. 2021 - Present

いばらき中小企業グローバル推進機構評議員　　　　　　　　　　　　　　
organizing_member
Apr. 2020 - Present

環境政策における全国行脚　　　　　　　　　　　　　　
advisor
23 Apr. 2022

NHKラジオ 新燃料 イーフューエル から考える脱炭素の課題　　　　　　　　　　　　　　
appearance
24 Feb. 2022

茨城大学・茨城県・茨城産業会議連携講演会　　　　　　　　　　　　　　
lecturer
27 Nov. 2021

（一社）日本陸用内燃機関協会 e-fuelに関する話題提供　　　　　　　　　　　　　　
lecturer
30 Jun. 2021