Influence of the cylinder head structure of a diesel engine on fatigue strength  

作　　者：盖洪武 程颖 姚秀功 

机构地区：[1]School of Mechanical Engineering,Beijing Institute of Technology

出　　处：《Journal of Beijing Institute of Technology》2014年第2期184-189,共6页北京理工大学学报（英文版）

基　　金：Supported by the National Basic Research Program of China(613570303)

摘　　要：Using finite element method,influence of diesel cylinder head structure on fatigue strength is investigated.A simplified head model with function characteristics is built for thermal-mechanical simulation.From the simulation results,the influence of valve bridge structure and roof transition fillet dimension on fatigue strength are obtained.And a new valve bridge structure which can effectively improve the fatigue life is proposed.Using finite element method,influence of diesel cylinder head structure on fatigue strength is investigated.A simplified head model with function characteristics is built for thermal-mechanical simulation.From the simulation results,the influence of valve bridge structure and roof transition fillet dimension on fatigue strength are obtained.And a new valve bridge structure which can effectively improve the fatigue life is proposed.

关 键 词：cylinder head structural feature fatigue conceptual design thermal-mechanical 

分 类 号：TK423[动力工程及工程热物理—动力机械及工程]