高速发动机气门弹簧动应力的计算研究  

Research on the Calculation of Dynamic Stress of the Valve Spring of High-speed Engine

作　　者：程福英 吕浚潮 何安 李佳俊 梁建武 Cheng Fuying;Lv Junchao;He An;Li Jiajun;Liang Jianwu(Zhejiang CFMOTO Power Co.,Ltd.)

机构地区：[1]浙江春风动力股份有限公司

出　　处：《摩托车技术》2021年第6期46-52,共7页Motorcycle Technology

摘　　要：本文首先阐述了摩托车发动机在转速上的发展趋势,然后介绍了气门动态特性与转速的关系、高速发动机气门弹簧断裂的原因,目前国内气门弹簧的计算现状、设计制约因素。接着提出了高速发动机弹簧动应力计算的必要性,给出了计算建模的理论、计算方法及工程实现。最后比较了气门弹簧在不同转速下动应力对强度的影响。This article firstly describes the development trend of motorcycle engine speed,and then introduces the relationship between valve dynamic characteristics and speed,the reasons for fracture of the valve spring of high-speed engines,the current calculation status of domestic valve springs,and the design constraints.Then the necessity of calculation of dynamic stress of high-speed engine spring is put forward,and the theory,calculation method and engineering realization of calculation modeling are given.Finally,the effect of dynamic stress on the strength of the valve spring at different speeds is compared.

关 键 词：发动机 气门弹簧 动应力 高速 

分 类 号：U483[交通运输工程—载运工具运用工程]