【摘要】 对汽车发动机连杆轴承和连杆螺栓故障同时存在不同干扰时两种基本故障的振动特征进行分析〔１〕，确定了连杆轴承和连杆螺栓故障的特征频带，开发了综合故障定量诊断软件〔２〕，实现了汽车发动机连杆故障的综合诊断更多还原

【Abstract】 This paper studies the characteristics of the vibration for the trouble of automobile engine connecting rod bearing and bolt,when there are different disturbances at the same time.The authors set up the trouble frequency of connecting rod bearing and bolt and design the soft ware for synthetic diagnosis of failures.The synthetic diagnosis of failures for automobile engine is achieved.更多还原