摘要
以157FMI汽油机由进气道喷射改为缸内直喷过程中的技改关键技术之结构强度为切入点,以火花塞关于气缸轴线对称的位置为喷油器喷射点,建立气缸盖有限元模型,对气缸盖进行结构强度研究。研究结果表明:气缸盖喷油器孔位的最大应力为80.38MPa,也是整个气缸盖最大强度。通过强度和位移校核,低于材料的屈服强度和结构许用应力,最终结果满足缸盖的强度要求。
Taking the structural strength of the key technology of the 157FMI gasoline engine in the process of changing from intake port injection to in-cylinder direct injection as the starting point,and taking the symmetrical position of the spark plug with respect to the cylinder axis as the injector injection point,a finite element model of the cylinder head is established.The structural strength of the cylinder head is studied.The research results show that the maximum stress of the cylinder head injector hole is 80.38MPa,which is also the maximum strength of the entire cylinder head.Through the strength and displacement check,it is lower than the yield strength of the material and the allowable stress of the structure,and the result meets the strength requirements of the cylinder head.
作者
袁文华
申晓东
伏军
吴磊
YUAN Wen-hua;SHEN Xiao-dong;FU Jun;WU Lei(School of Mechanical and Energy Engineering,Shaoyang University,Shaoyang 422000,China;Key Laboratory of Intelligent Manufacturing of High Efficiency Power System of Hunan Province,Shaoyang 422000,China)
出处
《内燃机与配件》
2022年第2期30-32,共3页
Internal Combustion Engine & Parts
基金
国家自然科学基金项目,微型自由活塞发动机HCCI催化燃烧稳定性机理与多场协同优化研究(52076141)
湖南省教育厅重点项目,临界条件下高强化柴油机喷雾与蒸发模型的研究(18A395)
湖南省研究生科研创新项目,157FMI汽油机改缸内直喷关键技术研究(CX2021SY039)。
关键词
摩托车
气缸盖
缸内直喷
结构强度
motorcycle
cylinder head
direct injection in the cylinder
structural strength
