电子燃油喷射系统的检测与维修.doc

毕 业 设 计 毕业设计题目：　 电子燃油喷射系统的检测与维修 学生姓名： 　　　 　　 　 学 号： 　　 　 系　　别： 车辆工程系 专　　业： 指导教师：　　 专业技术职务： 助 教 重庆机电职业技术学院绪论 摘要本文从发动机的基础知识入手，以我们最常见的、应用较广泛的电控燃油喷射系统为例，较系统地介绍了汽油电控燃油喷射技术的发展历程，汽油电控燃油喷射系统的类型、结构组成、工作原理，较详细地介绍了电控燃油喷射系统组成与工作原理，描述了轿车的故障诊断与分析。文章内容具有较强的针对性与实用性，电子控制燃油喷射装置是在电子控制单元的自动控制下，通过电控喷油器将发动机所需要的燃油成雾状地喷射到汽油发动机的进气歧管内或气缸内，然后与空气混合形成可燃混合气。电子控制燃油喷射系统与传统化油器燃油供给系统相比，由于原理上全然不同，因而结构上也面目全非。所以在分析故障和进行维修时，与常规方法有很大的不同。可作为汽车维修入门的参考资料。 关键词电控燃油喷射系统结构工作原理故障诊断与lectronic Fuel Injection Systems Fault Diagnosis and Analysis Abstract ：This article from the basic knowledge of the engine, to our most common, application widespread electronic-control fuel injection system as an example, the article systematically introduces gasoline electronic-control fuel injection technology development history, gasoline electronic-control fuel injection system types, structure, working principle, a particulared introduction car electronic-control fuel injection system composition and working principle, describes the car fault diagnosis and analysis, the article content with strong pertinence and practicability, the electronic control fuel injection device is in electronic control unit under control, automatic control by the engine injector needed fuel into mist shape to jet to gasoline engine intake manifold or inside cylinders, then mixed with air mixture formation. The electronic control fuel injection system and the traditional carburetor fuel supplying system, because compared the principle, and the different structural ulterly changed also. So in failure analysis and maintenance, and conventional methods are quite different. Can be used as automobile maintenance introductory reference material. Key words：Electronic Fuel Injection System; Structure; Working Principle; Fault Diagnosis and Analysis 目 录 1 绪　论．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．