正时链条组件滚子碎裂分析

Analysis of Timing Chain Assembly Roller Crack

某公司在发动机100 h试验过程后发现正时链条组件1颗滚子碎裂,与此同时,发动机3 000次冷热冲击试验完成后,拆机发现2颗滚子碎裂,经现场查看,滚子碎裂形态相似,全部为横向碎裂。正时链条组件作为发动机力矩传输的关键部分,被广泛运用于乘用车上,因正时链条断裂造成发动机无法启动的现象非常频繁,文章通过对一系列检测的分析,最终找到了滚子碎裂的真正原因,且提出了改善的合理建议。

A company in the engine 100 hours after the test found that the timing chain component 1 roller fragmentation, while at the same time 3 000 engine thermal shock test is completed, the disassemble found two roller fragmentation, the site view , roller fragmentation similar, all horizontal fragmentation.Timing chain assembly as a key part of engine torque transmission is widely used in passenger cars.Due to the fracture of timing chain, the engine can not start very frequently.Through the analysis of a series of tests,the article finally found out the real cause of the roller fragmentation and put forward some reasonable suggestions for improvement.