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发动机工作时,曲轴箱内的空气必须流通。但实际使用中由于燃烧室内产生的高压、活塞环存在间隙和背隙、活塞环转成对口、活塞环失去密封作用等原因,在发动机工作过程中,燃烧室内的废气、未燃净油气、炭烟微粒及水蒸气等往往会通过活塞与缸壁间隙渗入曲轴箱。通常,未燃净油气在
When the engine is working, the air inside the crankcase must be circulated. However, due to the high pressure generated in the combustion chamber during actual use, there are gaps and backlash in the piston ring, the piston ring turns into a counterpart, and the piston ring loses the sealing effect. During the operation of the engine, the exhaust gas, unburned oil and gas, Smoke particles and water vapor, etc. tend to penetrate the crankcase through the gap between the piston and the cylinder wall. In general, unburned oil and gas in the