1 引言近年来,柴油机的结构日益紧凑,致使曲轴及其驱动装置承受的负荷也越来越大。一定排量的发动机,其体积和重量主要取决于曲轴尺寸。因此在强化一台发动机时,人们力图保持曲轴尺寸不变,而通过先进的工艺来提高轴承的承载能力。尤其是增压发动机,由于连杆轴承承受的载荷更高,其磨损问题往往成为发动机设计中的关键问题。 1 Introduction In recent years, the structure of diesel engines has become increasingly compact, resulting in the crankshaft and its load bearing device is also growing. A certain displacement of the engine, its size and weight depends on the crankshaft size. Therefore, in strengthening an engine, people try to keep the same size of the crankshaft, but through advanced technology to improve bearing capacity. Especially the booster engine, due to the higher load bearing rod bearing, the wear problem is often the engine design of the key issues.