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Three-Dimensional Models for Analyzing the Cyclic Variations in a Lean Burn CNG Engine
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作者 李国岫 虞育松 刘建英 《Journal of Beijing Institute of Technology》 EI CAS 2007年第3期274-278,共5页
Three-dimensional models, consisting of the flame kernel formation model, flame kernel development model and natural gas single step reaction model, are used to analyze the contribution of cyclic equivalence ratio var... Three-dimensional models, consisting of the flame kernel formation model, flame kernel development model and natural gas single step reaction model, are used to analyze the contribution of cyclic equivalence ratio variations to cyclic variations in the compressed natural gas (CNG) lean burn spark ignition engine. Computational results including the contributions of equivalence ratio cyclic variations to each combustion stage and effects of engine speed to the extent of combustion variations are discussed. It is concluded that the equivalence ratio variations affect mostly the main stage of combustion and hardly influence initial kernel development stage. 展开更多
关键词 three-dimensional model lean burn CNG engine equivalence ratio combustion cyclic variations
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