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本文运用概率统计的原理，用随机点法建立了一个适用于各种汽油机燃烧室的几何计算模型，可以方便而精确地计算球面火焰在燃烧室的传播过程。从圆筒形燃烧室中火焰传播过程的计算，证实了模型的有效性；运用该计算模型计算了ＣＡ６１０２汽油机燃烧室内火焰传播过程中火焰前锋面积、已燃区体积随火焰传播距离的变化关系。
In this paper, using the principle of probability and statistics, a stochastic point method is used to establish a geometric calculation model applicable to various gasoline engine combustion chambers, which can conveniently and accurately calculate the propagation process of the spherical flame in the combustion chamber. The calculation of the flame propagation process in the cylindrical combustion chamber confirms the effectiveness of the model. The calculation of the relationship between the flame front area and the combustion zone volume with the propagation distance of flame during the propagation of flame in the CA6102 gasoline engine combustion chamber was carried out by using this calculation model.