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活塞环—气缸套摩擦副中的摩擦过程对发动机活塞环的工作有很大影响,摩擦过程决定了这对摩擦副的磨合条件和寿命,还影响活塞的排热。发动机工作初期的特点是在磨合过程的磨损偏高,在许多情况下活塞环和气缸套接触表面的材料咬合,并在其上产生擦伤和最后表面破损。例如,在10ДН20.7/25.4×2(10Д100)柴油机长达24小时的验交试验时,活塞环和气缸套工作表面上会周期性地形成擦伤。这就导致柴油机一定要拆修,以更换有缺陷的零件,然后重新进行试验,从而造成大量额外的费用和时间消耗。活塞环的不良工作条件要求材料有很高
The friction process in the piston-cylinder liner friction pair has a great influence on the work of the engine piston ring. The frictional process determines the running-in condition and the service life of the friction pair, and also influences the heat release of the piston. The early days of the engine were characterized by high wear and tear during the running-in process, in many cases the material of the piston rings and cylinder liner contact surfaces bite and bruise and finally the surface was damaged. For example, when a reciprocal test on a 10ДН 20.7 / 25.4 × 2 (10Д 100) diesel engine for up to 24 hours, the piston rings and cylinder liner work surfaces are periodically scratched. This led to the diesel engine must be disassembled to replace the defective parts, and then re-test, resulting in a lot of additional costs and time consumption. Piston rings poor working conditions require a high material