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1 问题的提出 柴油机工作时,由活塞、活塞环及气缸套3个零部件将燃烧室与曲轴箱隔离,形成一个密闭空间。该空间的密封性能直接影响到燃油在燃烧室内的燃烧质量(如有漏泄会使压缩压力达不到要求)及高温高压气体的做功质量,并且影响到曲轴箱内的机油高温氧化和曲轴箱内压力
1 PROBLEM PROBLEM When the diesel engine is working, the three components of the piston, the piston ring and the cylinder liner isolate the combustion chamber from the crankcase to form a sealed space. The sealing performance of the space directly affects the combustion quality of the fuel in the combustion chamber (if there is a leak, the compression pressure will not meet the requirements) and the work quality of the high-temperature and high-pressure gas, and affects the high temperature oxidation of the oil in the crankcase and the crankcase pressure