HC3-3: Prediction of Ignition Timing and Combustion Process in Gasoline HCCI Engines by Means of Zero-dimensional Chemical Kinetics Calculation in Consideration of Combustion Characteristic Time(HC: HCCI Combustion,General Session Papers)
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概要
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In this study, investigation was conducted on prediction of ignition timing and combustion process in a gasoline homogeneous charge compression ignition (HCCI) engine by means of one-dimensional engine cycle simulation and zero-dimensional chemical kinetics calculation. In-cylinder gas thermal states, air-fuel ratio and EGR ratio at intake valve closing time were obtained by means of cycle simulation and applied to initial conditions for chemical kinetics calculation. A detailed kinetic model (101 species and 592 reactions) obtained from the elementary reaction schemes for iso-octane and n-heptane was modified for zero-dimensional calculation with regular gasoline of octane number 91, and validated by engine experiments. The combustion characteristic timescale model by Kong et al. was applied to zero-dimensional chemical kinetics calculation for considering the influence both of the chemical reaction and turbulent mixing. As a result, ignition timing and combustion processes were predicted reasonably at various supercharging pressure and engine speeds.
- 一般社団法人日本機械学会の論文
- 2008-07-28
著者
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Wakisaka Tomoyuki
Department Of Mechanical And Physical Engineering Graduate School Of Engineering Osaka City Universi
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Takada Yogo
Department Of Mechanical And Physical Engineering Graduate School Of Engineering Osaka City Universi
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Takada Yogo
Department Of Mechanical And Physical Engineering Graduate School Of Engineering Osaka City University
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Wakisaka Tomoyuki
Department Of Mechanical And Physical Engineering Graduate School Of Engineering Osaka City University
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Takase Hideki
Department Of Mechanical And Physical Engineering Graduate School Of Engineering Osaka City University: Frontier Technical Development Div Daihatsu Motor Co. Ltd.
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