(1-21) Cylinder to Cylinder Deviations in Fuel Spray and Exhaust Emissions at Idling in High Pressure DI Diesel Engines((FS-2)Fuel Sprays 2-Diesel sprays)
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概要
- 論文の詳細を見る
High pressure fuel injection in a direct injection diesel engine is one of the most effective methods to reduce PM emissions. Pilot injection is also used to reduce NOx emissions and engine noise. Little research has investigated the fuel spray behavior under high pressure injection and pilot injection, and cylinder to cylinder deviations in spray behavior and the correlations with deviations in HC emissions are not clear. This study attempted to determine the relationship between cylinder to cylinder deviations in spray configuration and deviations in THC emissions with high pressure and pilot injections. It was found that an increase in injection pressure causes decreases in hole to hole and nozzle to nozzle spray deviations (Fig. 1). Very high injection pressures cause unstable spray development due to leakage from the magnetic valve. Deviations in THC emissions have a minimum at 40 to 80 MPa injection pressures (Fig. 2). Pilot injection of a very small quantity of fuel causes larger deviations in the spray configuration and mass. The amount of fuel adhering to the walls is less with pilot injection but there is no significant improvement in the THC emission while the HC components in the exhaust gas differ.
- 一般社団法人日本機械学会の論文
- 2001-07-01
著者
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Montajir Rahman
Department Of Environment And Energy National Traffic Safety And Environment Laboratory
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Montajir Rhaman
Department Of Mechanical Engineering Kitami Institute Of Technology
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HAYASHI Takeshi
Department of Neurology, Okayama University School of Medicine
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KITAYAMA Naoto
Department of Mechanical and Systems Engineering, Kitami Institute of Technology
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ISHITANI Hiromi
Department of Mechanical and Systems Engineering, Kitami Institute of Technology
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TSUNEMOTO Hideyuki
Department of Mechanical and Systems Engineering, Kitami Institute of Technology
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Montajir Rhaman
Department Of Environment And Energy National Traffic Safety And Environment Laboratory
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Kitayama Naoto
Department Of Mechanical And Systems Engineering Kitami Institute Of Technology
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Ishitani Hiromi
Department Of Mechanical And Systems Engineering Kitami Institute Of Technology
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Tsunemoto Hideyuki
Department Of Mechanical And Systems Engineering Kitami Institute Of Technology
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Hayashi Takeshi
Department Of Computer Science And Systems Engineering Graduate School Of Engineering Kobe Universit
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