引言内燃机的运转性能好坏与气缸工作表面的状况关系很大。在这方面,下述两个判断准则特别重要:1.活塞环、活塞和气缸套的咬合;2.活塞环和气缸套的磨损,它经常导致异常高的机油消耗。五十年代末,在欧洲,活塞环出现了一种过去未曾有过的现象(图1)。这种现象通常被描述为“烧伤”、烧迹或烧痕。如果这些痕迹继续扩展成为“烧伤”表面,则活塞的窜气量、磨损量以及机油消耗量就大大增加。接着, Introduction Internal combustion engine running performance is good or bad with the cylinder working surface conditions. In this regard, the following two judgments are of particular importance: 1. Engagement of piston rings, pistons and cylinder liners; 2. Wear of piston rings and cylinder liners, which often result in unusually high oil consumption. In the late fifties, there was a phenomenon in the piston ring that had not been seen before in Europe (Figure 1). This phenomenon is often described as “burns”, burned or burned marks. If these traces continue to expand to “burn” surfaces, the amount of blow-by, wear and oil consumption of the piston is greatly increased. then,