提出了一种新的分析方法,可更有效地研究强载柴油机气缸盖与机体的连接。通过采用X光和显微硬度测量可使故障分析产生更有意义的定量结果。提出了确定热位移的方向与大小、气缸压力与热循环之间的相互关系以及泄漏压力与热状态之间关系的试验方法。还成功地采用了深度测功器台架热循环试验再现使用现场所见到的故障模式。 A new analysis method is proposed to study the connection between the cylinder head of strong diesel engine and the body more effectively. Fault analysis can yield more meaningful quantitative results by using X-ray and microhardness measurements. A test method is proposed to determine the direction and magnitude of thermal displacement, the relationship between cylinder pressure and thermal cycling, and the relationship between leak pressure and thermal state. The Deep Dynamometer bench thermal cycle test was also successfully used to reproduce the failure modes seen on the site of use.