一、序言活塞环组的主要作用系防止燃气从燃烧室漏泄至曲轴箱以及阻止滑油从曲轴箱进入燃烧室。然而,在这两个方面装有活塞环组的活塞也起着重要的作用。因此,活塞和活塞环之间相互作用的最佳化就成为新机型发展过程中的一个重要因素。对于活塞组件制定的性能标准在不断地提高,有关减少滑油耗量和窜气量的 I. Preamble The primary role of the piston ring set is to prevent gas leakage from the combustion chamber to the crankcase and to prevent oil from entering the combustion chamber through the crankcase. However, pistons equipped with piston ring sets in these two areas also play an important role. Therefore, the optimization of the interaction between the piston and the piston ring has become an important factor in the development of new models. Performance standards set for the piston assembly are constantly being improved, with regard to reducing oil consumption and blow-by gas