本文叙述了经气相O—S—N共渗处理的缸套活塞环,通过150小时台架试验,8万3千公里的装机路试证明,经 O—S—N 共渗处理的缸套活塞环与未经共渗处理的缸套活塞环相比耐磨性显著提高,共渗缸套使用寿命提高3倍以上,共渗的活塞环耐磨性提高2倍以上.气相 O—S—N 共渗工艺用于处理汽车发动机缸套活塞环是可行的. This paper describes the piston O-S-N co-infiltration of the cylinder liner piston ring, 150-hour bench test, 83,000 kilometers of installed road test proved that the O-S-N co-infiltration of cylinder piston Compared with the non-co-processed cylinder liner piston rings, the wear resistance is significantly improved, the service life of the co-permeable cylinder liner is increased by more than 3 times, and the wear resistance of the co-permeable piston ring is increased by more than two times. Percolation process for the treatment of automotive engine cylinder piston ring is feasible.