金属加工（热加工）Issue(11)：157-162,168,7.
某船用柴油机喷油器体故障分析
Failure analysis of fuel injector body in a marine diesel engine
摘要
Abstract
This article focuses on the batch cracking problem of the 42CrMo injector bodies on a certain marine diesel engine.Through comprehensive experiments and simulation analysis,the failure causes are explored.The results show that the cracking mode of the injector body is fatigue cracking.The machining quality at the position of the oil hole fillet R is poor.Induction quenching makes the hardness at the R position on the high side and the structure coarse.Stress concentration occurs at the R position during the service process,and fatigue cracking occurs under the action of alternating loads.关键词
喷油器体/42CrMo钢/疲劳开裂Key words
fuel injector body/42CrMo steel/fatigue cracking引用本文复制引用
杨欢,周勇,冉启燕,范希杰,陈廷博,杨清..某船用柴油机喷油器体故障分析[J].金属加工（热加工）,2025,(11):157-162,168,7.基金项目
工信部"船用低速机工程"项目(CBG5N21-1-3). （CBG5N21-1-3）
