毕业论文：奥迪发动机进气系统的检测与维修.docVIP

抚州职业技术学院 FUZHOU VOCATIONAL TECHNICAL COLLEGE 毕业论文（设计） 奥迪发动机进气系统的检测与维修 EXamination and repair of the AoDi engine intake system 系、部 名 称: 软件与汽车工程系 学 生 姓 名: 王 东 平 专 业: 汽车检车与维修 学 号: 指导教师姓名: 林 伟 鹏 2012年12月20日 摘 要 ? 发动机是工程机械的心脏，而进气系统则是发动机的动脉，进气系统的合理性直接影响发动机的性能、寿命，从而影响整机的性能、寿命及环保性。进气系统的功能是为发动机提供清洁、干燥、充足的空气，系统中主要组件空滤器、管路及其设计安装将直接影响发动机功能的发挥、工作稳定性、可靠性，甚至大大缩短其寿命。当代汽车进气系统主要是可变进气系统。可变进气系统主要分VVT（可变气门正时），CVVT（连续可变气门正时），VVT-i（电子可变正时），i-VTEC（电子可变气门升程）这四种。 ?关键词：发动机进气系统，奥迪汽车，检测与维修，养护 ? ABSTRACT The engine is the heart of engineering machinery, while the intake system is the engine of the artery, weather the intake system function well or not will direct affect the engine performance, life, thus it will affect the whole part.Cleaning, drying, sufficient air will be provided by the intake system .the main part of system is assembly air filter, pipeline design and installation,will driect affect the engine functions,workingstablity,even shorten its life .Cars air intake system is mainly the variable intake system.Variable intake system consists of VVT (variable valve timing), CVVT (continuously variable valve timing),VVT-i (electronic variable timing), i-VTEC (electronic variable valve lift) the four condition.With the rapid development of economy, The car has became an indispensable means of transportation in the peoples daily life.This article will take the AoDi as an example to introduce the working principle of automobile engine intake system. The reasons for the engine doesnt working ,introducing the engine intake systems examination and reparing .Take the AoDi as an example ,introducing how to protect intake system and prevent the bad things.In addition, introduce the AoDis the two air intake system working principle,In order to strengthen the awareness of the car , to improve this phenomenon that repair and protect of th