气门系统设计优化在汽车发动机中的应用及材料选择

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中图分类号：U464.11 文献标识码：A 文章编号：1003-8639（2026）03-0139-03

Optimization Design and Material Selection of Engine Valve System in Automotive Application

Tang Jingyao,WangMiaomiao,LiShuhang (Hebi Automotive Engineering Professional College,Hebi 458o30, China)

【Abstract】With the development of automotive engines in the direction of high thermal eficiency and low emissions,thethermo-mechanicalloadsbornebythevalvesystemaregetingbiggerandbigger,andthetraditionaldesign of the valve system canno longer satisfy the requirements of modern working conditions on abrasion resistance and creep resistance.This paperfocuses onthefailure of valve system in extreme environment,analyzes its failure mechanism,and researches from two aspects of structural designand material selection.The problems of valve ablation,wear and fracture are solved through the analysis of valve body,spring and seat structure optimization pathsand diferent advanced material matching strategies for intakeand exhaust valves.Thispaper aims to give theoretical supportandengineringoperation lead tothe creation of highly reliableandlong-life engine gas distribution mechanism throughthe joint researchof structural innovation and material modification.

【Key words】automobile engine；valve system；structure optimization;material selection

0 引言

在排放法规日益严苛与追求极致热效率的背景下，涡轮增压与缸内直喷等技术的应用使发动机气门系统面临前所未有的热机耦合挑战。（剩余4738字）