活塞环与汽缸套是发动机的一个重要摩擦副。活塞环所要完成的任务是复杂的:它必须对缸套起密封作用以防止燃气的泄漏和过量的润滑油进入燃烧室,同时要求在工作过程中具有较小的摩擦损失和一定的使用寿命。因此,这移动的密封直接影响发动机的功率、润滑油的损耗、活塞环与缸套的摩擦、磨损、润滑和使用寿命。 Piston ring and cylinder liner is an important friction pair of the engine. The task to be accomplished by a piston ring is complex: it must seal the liner to prevent gas leakage and excess oil from entering the combustion chamber, while requiring less frictional loss and a certain useful life during operation. Therefore, this moving seal directly affects engine power, lubricant loss, friction, wear, lubrication, and service life of the piston and liner.