建立了一种用于计算火焰与各种几何形状的点燃式发动机燃烧室之间相互关系的计算模型，应用在发动机准维模型中能很好地满足火焰形状椭球化、火焰中心飘移等计算要求。能计算火焰前锋面积，已、未燃区体积和已、未燃区与燃烧室之间的传热面积等参数。通过有效性讨论，认为模型具有较好的精确性和适应性。 A calculation model for calculating the relationship between a flame and a combustion engine of a spark ignition engine of various geometric shapes is established. The model can be used in the quasi-dimensional model of an engine to meet the requirements of flame ellipsoid shape and flame center drift Claim. Can calculate the flame front area, has been, unburned zone volume and has, unburned zone and the heat transfer area between the combustion chamber and other parameters. Through the discussion of effectiveness, the model is considered as accurate and adaptable.