配气机构优化设计与仿真 硕士学位论文

本资料包含pdf文件1个，下载需要1积分

配气机构优化设计与仿真ABSTRACT
Valve train is the important component of internal combustion engine(ICE).The
rationality of its design affects the dynamic performance，economical efficiency，
emission behavior，reliability and durability of ICE directly.As the development of
ICE，higher power output and higher speed are
required.At the same time，it brings a
problem that whether the engine Can work reliably and smoothly.Therefore，higher
performance valve train is wanted.The cam profile is key component of valve train.
The design ofcam profile is an important method tO valve train optimization.
The cam profile of gasoline engine is optimized in this paper.Atter the cam
analysis of original engine is done，three new cam profiles is designed and simulated.
The simulation result reveals that the profiles designed have no flying off and bounce1.1选题背景及意义
1.1.1内燃机配气机构概述
第-章绪论
近十多年来，内燃机设计理论和方法有了很大的发展：零件的强度设计计算，
已经从材料力学公式计算发展为有限元分析；从静态设计发展到动态设计；从可
行性设计发展到优化设计；从安全系数设计发展到可靠性设计和有限寿命设计；
从人工设计和经验设计发展为计算机辅助设计：从局部方法设计发展为系统工程
设计；从陈旧的外形设计发展为工业艺术设计。设计理论和设计方法的进展，将
对我国内燃机产品发展产生重大影响。