本文利用雷诺类比法研究了点燃式发动机缸套壁面润滑油膜中未燃HC的生成和释放过程，研究了结构和运转参数对润滑油膜中未然HC生成量的影响．计算结果表明：提高缸套壁面润滑油温度，提高发动机转速，燃用较稀混合气以及使用低压缩比等措施均能减少缸套壁面润滑油膜中未然HC的生成或释放量，达到降低发动机未燃HC排放的目的． In this paper, Reynolds analogy was used to study the formation and release of unburned HC in the lube oil film of lighted engine liner wall. The effect of structure and operating parameters on the formation of unprovoked HC in lube oil film was studied. The calculation results show that increasing engine oil temperature, increasing engine speed, using lean mixture, and using low compression ratio can reduce the formation or release of unimportant HC in the lubricant film on cylinder wall, The purpose of burning HC emissions.