影响内燃机活塞环-缸套擦伤的因素及防擦伤的摩擦学设计

The Effect of Various Factors on the Scuffing of Piston Ring Cylinder Liner in Internal Combustion Engine and the Measure for Anti scuffing Tribological Design

阐述了内燃机活塞环－缸套擦伤的机理．分析了磨合，缸套表面形貌，活塞环外形，活塞组件的热变形与机械变形，润滑油，材料和表面覆层等因素对活塞环擦伤的影响．指出可以采用内燃机强化系数ｐｅｖｍ作为活塞环防擦伤摩擦学设计的判别特征值，从而为从设计上防止活塞环擦伤提供了思路．

The scuffing mechanism of piston ring cylinder liner is introduced. The main factors that influence the piston ring scuffing are summarized as running in, surface roughness, contour of ring, thermal and mechanical deformation of piston assembly, lubricant, material, and surface protective layer. The intensified coefficient p e v m is suggested as the criterion for judging scuffing degree. The possibility of scuffing occurrence is divided into four grades according to the values of p e v m. The tribological design measure to avoid scuffing of pistion ring cylinder liner is reviewed.