汽油机燃烧过程模拟计算及爆震预测

Simulation of Combustion Process and Knock Prediction in Gasoline Engines

将计算焰前反应的化学反应动力学模型与燃烧模型及湍流火焰传播模型相结合，建立了含有碳氢燃料焰前反应的简易化学动力学模型的汽油机双区燃烧模型。用该模型能较好地模拟汽油机燃烧过程，并能实现爆震预测，研究影响爆震发生的诸多因素。采用此模型对４９２ Ｑ Ａ 汽油机进行模拟计算的结果与试验结果能较好地吻合，证明了该模型的可行性。

A double area combustion model combined with a reduced kinetic model and a turbulent flame propagation model was established for gasoline engines.The combustion model is available to simulate the combustion process and predict the engine knock in spark ignition engines.The calculated results on a 492QA automotive gasoline engine agree well with the corresponding experimental data in general.