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机油有汽油机机油和柴油机机油两种。汽油机和柴油机同样在高温、高压、高速、高负荷条件下工作,但两者仍有较大的区别。柴油机压缩比要比汽油机大一倍多,其主要零件受到高温高压冲击比汽油机大得多,因而有些零部件制作材料也不同。例如:汽油机主轴瓦与连杆轴瓦可用材质软、抗腐性好的巴氏合金来制作;而柴油机的轴瓦则必须采用铅
There are gasoline engine oil and diesel engine oil two. Gasoline engines and diesel engines also work under conditions of high temperature, high pressure, high speed and high load, but there is still a big difference between the two. Diesel engine compression ratio than twice as much, the main parts of the impact by high temperature and pressure than the gasoline engine is much larger, so some parts of the production of materials are also different. For example: Gasoline main bearing and connecting rod bearing bush can be made of soft material, good corrosion resistance of the Babbitt alloy; and the bearing of the diesel engine must use lead