汽车维修专业毕业论文(精）.doc

专升本毕业设计(论文) 设计( 论文) 题目: 上海大众汽车点火系统故障诊断与流程分析学院名称: 机械工程学院专业: 汽车营销与售后技术服务班级: 12 秋浙农贸汽车姓名: 沈从飞学号 020113300784 指导教师: 黄永青职称副教授定稿日期: 2014 年9月 28日中文摘要 II 摘要现代汽车电子控制技术是汽车技术和电子技术的相结合,是现代工业发展与高新技术发展的产物,汽车电子化程度的高低从某种程度上反映了汽车水平的高低。目前,电子技术的应用已经深入到汽车的所有系统,使汽车的技术性能、经济性和舒适性都有了很大提高,而电子点火系统的应用能更好的提高汽车的动力性、燃油经济性、降低废气排放。本文介绍了现代电子点火系统的发展历程、优点、分类、构造、工作原理,系统分析了电子点火系统的常见故障,并结合实际分析了典型故障产生的原因,并给出了具体的故障排除方法。关键词: 电子点火系统; 故障诊断排除英文摘要 III The modern automobile electronic control technology is bination of the automobile technology and the electronic technology development, isa product of modern industrial development and high technology, automotive electronicsdegree reflects the car level to some extent. At present, the application of electronic technology has been deep into all system of automobile, make vehicletechnical performance, economy fort have been greatly improved, andthe application of electronic ignition system can better improve the vehicle's power performance, fuel economy, lower emissions. This paper introduces the development process of modern electronic ignition system, the advantages,classification, structure, working principle, system analysis mon breakdown of electronic ignition system, bined with the practical analysis of typical malfunctions of produce, and gives the specific troubleshooting metho I 目录一汽车电子点火系统的概述 1汽车点火系统的发展历程················································ 1 2电子点火系统的基本组成及工作原理·································· 2 二电子点火系统常见故障诊断·················································· 5 1电子点火系的常见故障··················································· 5 2电子点火系的故障诊断··················································· 5 三电子点火系统故障诊断与维修实例········································· 8 1上海大众轿车发动机不能起动............................. 8 2上海大众轿车(采用无触点式点火系统)点火系统检查············· 8 3上海大众轿车点火线圈和点火器的检测······························· 9 结论····················································································· 11 致谢······································································