A Basic Behavior of CNG DI Combustion in a Spark-Ignited Rapid Compression Machine
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概要
- 論文の詳細を見る
A basic characteristics of compressed natural gas direct-injection (CNG DI) combustion was studied by using a rapid compression machine. Results show that comparing with homogeneous mixture, CNG DI has short combustion duration, high pressure rise due to combustion, and high rate of heat release, which are considered to come from the charge stratification and the gas flow generated by .the fuel injection. CNG DI can realize extremely lean combustion which reaches 0.03 equivalence ratio, φ. Combustion duration, maximum pressure rise due to combustion and combustion efficiency are found to be insensitive to the injection modes. Unburned methane showed almost the same level as that of homogeneous mixture combustion. CO increased steeply with the increase in φ when φ was greater than 0.8 due to the excessive stratification, and NO_x peak value shifted to the region of lower φ. Combustion inefficiency maintains less than 0.08 in the range of φ from 0.1 to 0.9 and increases at very low φ due to bulk quenching and at higher φ due to excessive stratification. The combustion efficiency estimated from combustion products shows good agreement with that of heat release analysis.
- 一般社団法人日本機械学会の論文
- 2002-11-15
著者
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TSUE Mitsuhiro
The University of Tokyo
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Kono M
Dpt. Of Aeronautics And Astrorauics University Of Tokyo
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Kono Michikata
Department Of Aeronautics And Astronautics University Of Tokyo
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Tsue Mitsuhiro
Department Of Aeronautics And Astronautics University Of Tokyo
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Shiga Seiichi
Department Of Mechanical Engineering Gunma University
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Shiga Seiichi
Gunma University Mechanical Engineering Department
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OBOKATA Tomio
Department of Mechanical System Engineering, Gunma University
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Shiba Seiji
Department Of Aeronautics And Astronautics University Of Tokyo
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Nomura Hiroshi
Department Of Mechanical Engineering Gunma University
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NAKAMURA HISAO
Department of Nutrition, Koshien University
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HUANG Zuohua
School of Energy and Power Engineering, Xi'an Jiaotong University
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UEDA Takamasa
Nissan Motor Co., Ltd., Engine Engineering Department
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JINGU Nobuhisa
Nissan Motor Co., Ltd., Engine Engineering Department
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ISHIMA Tsuneaki
Department of Mechanical Engineering, Gunma University
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Huang Zuohua
School Of Energy And Power Engineering Xi'an Jiaotong University
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Ueda Takamasa
Nissan Motor Co. Ltd. Engine Engineering Department
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Jingu Nobuhisa
Nissan Motor Co. Ltd. Engine Engineering Department
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Nakamura Hisao
Department Of Nutrition Koshien University
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Nomura Hiroshi
College Of Industrial Technology Nihon University
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Obokata Tomio
Department Of Mechanical System Engineering Gunma University
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Kono Michikata
Department Of Aeronautics And Astronautics The University Of Tokyo
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Tsue Mitsuhiro
Department Of Aeronautics And Astronautics The University Of Tokyo
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Nakamura Hisao
Department of Chemistry, Kyoto Institute of Technology
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