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■发动机在正常使用中,曲轴轴颈将有正常的磨损,并有一定的规律性,熟悉曲轴的磨损规律,掌握轴颈磨损的检测技巧,是发动机大修(或其它情况下的修理)的一项重要工作。对曲轴磨损状况进行准确的检测,确定曲轴是否需要修理(光磨),不仅决定了维修的工作量,也确保了发动机的维修质量。 曲轴轴颈的磨损规律 曲轴主轴颈和连杆轴颈的磨损在径向(直径方向)和轴向(轴的方向)都是不均匀的,其主要的表现是径向磨损成椭圆形(轴颈受力大的部位磨损严重),即出现圆度偏差,轴
■ Normal use of the engine, the crankshaft journal will have normal wear and tear, and a certain regularity, familiar with the rules of crankshaft wear and tear, grasp the detection of journal wear, engine overhaul (or other circumstances) Important work. Accurate detection of crankshaft wear and tear, crankshaft to determine whether the need for repair (light grinding), not only determines the maintenance workload, but also to ensure the quality of engine maintenance. Crankshaft Journal Wear Rules The crankshaft journal and connecting rod journal wear is not uniform in the radial (diameter) and axial (axial) directions. The primary manifestation is radial wear to an oval (shaft Severe wear parts of the neck wear), that is, roundness deviation axis