通过对发动机曲轴轴颈与轴承损坏原因的分析，重点阐述了发动机在使用与维修中预防损坏的措施和方法。
By analyzing reasons for break of engine crankshaft journal and bearing, this paper describes mainly some countermeasures they are break in use and maintenance.
概括了作者近年来对曲轴锻造工艺的研究，指出现行工具书和高校教材中关于错移工序论述的疏漏和失真之处，给予补充和订正。
It is pointed out that there are faults and untruth about the discussion of shift process in present reference books and college teaching materials.
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