Operation of a Two-Stroke S. I. Engine with Scavenging-Port Injection of CNG(CNG and Alternative Fuels, CNG Engines)

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概要

• 論文の詳細を見る

• This paper presents the feasibility to apply scavenging-port injection of a compressed natural gas (CNG) to a two-stroke spark-ignition engine. A two-cylinder production engine for boat racing is used as a test engine. Through a preliminary experiment with several methods of CNG flow-rate measurement, a reliable procedure could be established. The engine was run at a constant speed of 3000 rpm and WOT condition. Comparing with the operation with a gas-mixer, by applying scavenging-port injection BSFC was decreased by 20 % and HC emission by 47 % at the best condition. Three methods of injector installation and three types of fuel pipe attached to the injector tip were included in the optimization process. A mechanism to explain the optimizing was also proposed on the basis of the consideration on the interaction between the flow of CNG jet and the scavenging flow.

• 一般社団法人日本機械学会の論文
• 2004-08-02

著者

• ARAKI Mikiya

  Department of Aeronautics and Astronautics, University of Tokyo

• Shiga Seiichi

  Department Of Mechanical Engineering Gunma University

• Araki Mikiya

  Department Of Mechanical Engineering Gunma University

• Shiga Seiichi

  Gunma University Mechanical Engineering Department

• OBOKATA Tomio

  Department of Mechanical System Engineering, Gunma University

• Shiba Seiji

  Department Of Aeronautics And Astronautics University Of Tokyo

• Nomura Hiroshi

  Department Of Mechanical Engineering Gunma University

• NAKAMURA HISAO

  Department of Nutrition, Koshien University

• Maehara Mitsuhiro

  Department of Mechanical Engineering, Gunma University

• Nakajima Kuniaki

  Department of Mechanical Engineering, Gunma University

• Fukushima Takenori

  Department of Mechanical Engineering, Gunma University

• Uchiyama Kozo

  Technical Section, Yamato Motor, Co. Ltd.

• Nakajima Kuniaki

  Department Of Mechanical Engineering Gunma University

• Nakamura Hisao

  Department Of Nutrition Koshien University

• Uchiyama Kozo

  Technical Section Yamato Motor Co. Ltd.

• Fukushima Takenori

  Department Of Mechanical Engineering Gunma University

• Maehara Mitsuhiro

  Department Of Mechanical Engineering Gunma University

• Obokata Tomio

  Department Of Mechanical System Engineering Gunma University

• Nakamura Hisao

  Department of Chemistry, Kyoto Institute of Technology

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