在Dowson 等人发表了考虑活塞环贫油润滑的论文后,把活塞环润滑研究推进了一大步。但是该文仍存在一定的缺陷,为此作者提出了活塞环组兼有充分和贫油润滑的新模型,并阐述了有关的数值计算过程。文末附有计算实例,用新模型得到的膜厚计算值更接近于实测值,并且与生产实际中出现的事实是一致的。 After Dowson et al. Published a paper that considered the lean lubrication of piston rings, the study of piston ring lubrication has taken a significant step forward. However, there are still some defects in this paper. For this reason, the author proposes a new model of both piston rings with both full and lean lubrication, and expounds the related numerical calculation. At the end of this paper, a calculation example is attached. The calculated film thickness obtained by the new model is closer to the measured value and is consistent with the fact of production.