某汽油机连杆失效分析与优化验证  

Failure Analysis and Optimized Verification of Certain Gasoline Engine Con-rod

作　　者：杨林强[1] 范习民[1] 陈园明[1] 穆芳影[1] 宋长青[1] 

机构地区：[1]安徽江淮汽车股份有限公司,安徽合肥230601

出　　处：《内燃机》2012年第1期47-50,共4页Internal Combustion Engines

摘　　要：通过使用故障树FTA分析,主要运用AVL EXCITE进行连杆系统动力学分析、Nastran应力恢复评估连杆应力状况,同时校核螺栓拧紧方式,改善连杆涨断工艺等手段,解决了涨断连杆在试验中出现的多次连杆断裂问题,并通过了相关的可靠性试验,取得了良好的市场表现。In this paper, through using the Fault Tree Analysis method, the project group solved broken-up con-rod fracture, and helped the engine matching the con-rod, successfully passed the relevant reliability tests, and achieved good market performance. In the process, we mainly used AVL EXCITE software to analyze con-rod system dynamics, and used Nastran software to recover con-rod stress to assess the con-rod stress conditions, and check the bolt tightening methods, as well as improve the broken-up technology and other methods to realize the goal.

关 键 词：FTA 涨断连杆 连杆断裂 螺栓拧紧方式 可靠性 

分 类 号：TK411[动力工程及工程热物理—动力机械及工程]