钱德猛，李波

 （安徽江淮汽车股份有限公司 技术中心，安徽 合肥 230000）

摘要：为实现发动机机油消耗及窜气量的模拟分析，并建立预测发动机机油消耗及窜气量的正向分析能力，论文基于动力学分析方法建立了某汽油发动机缸体-活塞-活塞环的详细分析模型，获得了额定工况下机油消耗及窜气量随发动机转速的变化关系。模拟计算结果表明：缸体-活塞-活塞环动力学分析模型能够有效实现对发动机机油消耗及窜气量的预测。

关键词：缸体-活塞-活塞环；动力学分析；机油耗；活塞窜气量

Abstract：In order to achieve the lube oil consumption analysis and blow-by analysis, at the same time establish the ability to predict the value of oil consumption and blow-by, the block-piston-piston rings model were set up based on the dynamic analysis methods ,then the relationship with lube consumption，blow by and speed were attained. The results of the dynamic analysis, the reliability test, blow-by test showed that the calculation of lube consumption slight higher than the test value, the same variation trends of blow-by were similar between the computation and test. The analysis model of block-piston-piston rings would complete the prediction of lube consumption and blow-by.

  Key Words：Block-piston-piston Ring； Dynamic Analysis；Lube Oil Consumption；Piston Blow-by