毕业设计-汽车点火系统故障诊断与维修.doc

西安航空技术高等专科学校
毕业论文(设计)
题目:汽车点火系统故障诊断
系别:车辆与医电工程系
专业:汽车改装技术
班级:汽改1208
学号:0930702120814
学生姓名:赵星
指导老师:郑颖
2012年5月
摘要
点火系统是汽油发动机重要的组成部分,对发动机的性能有着决定性的影响。随着汽车工业的不断发展,汽车电子化程度不断提高,汽车的点火系统已由传统的蓄电池点火系统发展到国内外广泛采用的电子点火系统,电子点火系统又称为半导体点火系统或晶体管点火系统,越来越多的汽车厂家将电子技术应用到了汽车上,特别是在点火系统上,各个厂家都不断推出各自的电子点火应用系统,与传统的白金触点点火系统相比,电子点火系寿命长,性能高,稳定性好。为了更好的了解和认识汽车电子点火系,并能够懂得其故障诊断及维修的基本方法,本文详尽介绍了现代电子点火系统,包括电子点火系统的优点、分类、构造、工作原理、点火控制特性及其故障诊断维修实例,尤其是现代汽车上应用较广的霍尔传感器基本工作原理。在此基础上,综述了现代电子点火系统,随着发动机向高转速、稀混合气方向发展,普通电子点火系统已不能满足要求,高能微机控制点火系统将成为今后点火系统的发展方向。
关键词:电子点火系统、故障诊断、点火控制、微机控制
Abstract
Gasoline engine ignition system is an important part of the performance of the engine have a decisive influence. With the continuous development of automobile industry, increasing degree of automotive electronics, car ignition system has been the development of the traditional battery ignition system widely used at home and abroad electronic ignition systems, electronic ignition system, ignition system, also known as semiconductor or transistor ignition system More and more car manufacturers of electronic technology to the car, especially in the ignition system, various manufacturers have been introducing their own electronic ignition applications, with the traditional platinum pared to the ignition system, electronic ignition system life long, high-performance, good stability. In order to better understanding and knowledge of automotive electronic ignition system, and to understand their diagnosis and maintenance of the basic method, this paper describes in detail the modern electronic ignition systems, including the advantages of electronic ignition systems, classification, structure, working principle, characteristics of the ignition control example of fault diagnosis and maintenance, in particular, wider application of modern automobile basic working principle of the Hall sensor. On this basis, the application of modern electronic ignition systems, with the engine to high speed, the direction of lean