汽油机气缸垫密封失效原因分析及可靠性开发研究  

Seal Failure Cause Analysis and Reliability Development of Cylinder Head Gasket for Gasoline Engine

作　　者：赵福成 孙祺翔 李萌之 郭志杰 孙亚东 亓建永 陈旗奇 Zhao Fu-cheng;Sun Qi-xiang;Li Meng-zhi;Guo Zhi-jie;Sun Ya-dong;Qi Jian-yong;Chen Qi-qi(Ningbo Geely Royal Engine Components Co.,Ltd,Ningbo 315336,China;Geely Automobile Research Institute(Ningbo)Co.,Ltd,Ningbo 315336,China)

机构地区：[1]宁波吉利罗佑发动机零部件有限公司,浙江宁波315336 [2]吉利汽车研究院(宁波)有限公司,浙江宁波315336

出　　处：《内燃机与配件》2024年第6期38-41,共4页Internal Combustion Engine & Parts

摘　　要：为进一步提高汽油机气缸垫设计开发的可靠性,降低气缸垫在开发过程中出现密封失效问题的概率,快速解决气缸垫密封失效问题。对汽油机气缸垫的密封失效问题进行了研究。分析了影响气缸垫密封性能的相关零部件:气缸体、气缸盖、气缸盖螺栓及气缸垫本身,涉及密封的相关问题,提出了这些零部件的优化措施和设计要求。针对气缸垫设计开发过程,提出了有限元仿真分析结合冷热冲击试验瞬态温度场边界的分析方法,可以更准确的得到气缸垫仿真分析结果。同时为了规范化设计开发气缸垫,提出了一种气缸垫设计开发流程。In order to further improve the reliability of gasoline engine cylinder head gasket design and development,reduce the probability of cylinder head gasket problems in the development process,and quickly solve the cylinder head gasket seal failure problem.The seal failure problem of cylinder head gasket of gasoline engine is studied.This paper analyzes the related parts which affect the sealing performance of cylinder head gasket,including cylinder block,cylinder head,cylinder head bolt and cylinder head gasket itself,and puts forward the optimization measures and design requirements of these parts.Aiming at the design and development of cylinder head gasket,a FEA method combined with transient temperature field boundary of thermal shock test is proposed,which can obtain the simulation analysis results of cylinder head gasket more accurately.At the same time,in order to standardize the design and development of cylinder head gasket,a design and development process of cylinder head gasket is proposed.

关 键 词：汽油机 气缸垫 有限元分析 瞬态温度 

分 类 号：TH138.51[机械工程—机械制造及自动化]