奥迪a6l轿车点火系统的常见故障诊断与检测学士学位论文

提供完整版的各专业毕业设计，

毕业设计（论文）

设计（论文）题目：奥迪A6L轿车点火系统的常见故障

诊断与检测

学院名称：机械工程学院

专业：汽车服务工程

班级：汽车112班

姓名：学号：11405050202

指导教师：职称：副教授

定稿日期：2015 年01 月16 日

摘要

进入21世纪以来，汽车电子信息技术的迅速发展对汽车诊断与检测技术提出了更高的要求，科技含量也不断增加。尤其是在汽车修理方面，发动机故障诊断与检测技术占有非常重要的地位。相关信息表明在发动机故障中，点火系统故障约为总故障的一半左右，所以对于点火系统故障诊断与检测的研究是十分有意义的。随着奥迪A6L轿车在国内市场的保有量的不断提高，其点火系统在使用过程中出现的问题也越来越频繁。因此，对奥迪A6L轿车点火系统常见故障的诊断与检测就显得更加重要。

本文主要介绍奥迪A6L轿车点火系统的组成、工作原理及点火系统各主要元件的功用、工作原理，通过研究工作中各主要部件的失效形式,调查得出各个元件失效的概率分布情况,并分析常见故障的原因,最终建立奥迪A6L轿车点火系统故障的诊断流程，这为日后奥迪A6L轿车点火系统故障诊断提供更多便利。

关键词：奥迪A6L；点火系统；常见故障；诊断流程

ABSTRACT

The rapid development of the automobile electronic information technology put forward higher request to the automobile diagnostic technology, content of science and technology will continue to increase. Especially the engine fault diagnosis and detection technology plays a very important role in automobile repair. Relevant information shows that in the engine fault, about half the ignition system failure is about a total failure, so for the study of ignition fault diagnosis and detection system is very meaningful. With the Audi A6L automobile quantity in the domestic market improving continuously, the ignition system problems in the process use appeared more and more frequently. Therefore, the diagnosis and detection of the Audi A6L automobile ignition system common fault is very important.

This paper mainly introduces the Audi A6L automobile ignition system composition,operational principle and the function,operational principle of the main elements in the ignition system , through the research of the failure form of each main parts,investigation to show that the probability distribution of each component failure,and the analysis of the reasons of the common faults,and finally established the diagnostic process of Audi A6L automobile ignition system fault,providing more convenience for future Audi A6L car ignition.

Key words:Audi A6L; Ignition system; Common fault; Diagnosis process

目录

目录

第1章引言.......................................................................................... - 1 -

1.1研究背景与意义......................................................................................... - 1 -

1.2国内外研究现状......................................................................................... - 1 -

1.2.1国内汽车诊断技术的发展................................................................................. - 4 -

1.2.2国外汽车诊断技术的发展................................................................................. - 4 -

1.3研究内容..................................................................................................... - 2 - 第2章奥迪A6L轿车点火系统构造和工作原理............................ - 3 -

2.1奥迪A6L轿车点火系统的组成与工作原理 ........................................... - 3 -

2.2奥迪A6L轿车点火系统的各主要元件功用、结构及工作原理 ........... - 4 -

2.2.1火花塞................................................................................................................. - 4 -

2.2.2点火线圈............................................................................................................. - 5 -

2.2.3点火控制器......................................................................................................... - 5 -

2.2.4主要传感器......................................................................................................... - 5 - 第3章奥迪A6L轿车点火系统主要元件的失效形式.................. - 10 -

3.1火花塞的主要失效形式........................................................................... - 10 -

3.2点火线圈的主要失效形式....................................................................... - 10 -

3.3点火控制器的主要失效形式................................................................... - 11 -

3.4高压导线的主要失效形式....................................................................... - 11 -

3.5主要传感器的主要失效形式................................................................... - 11 -

3.6小结........................................................................................................... - 11 -第4章奥迪A6L轿车点火系统常见故障的诊断流程错误！未定义书签。

4.1发动机不能启动的故障诊断................................................................... - 14 -

4.2发动机动力不足的故障诊断................................................................... - 14 -

4.3发动机高速运转不良的故障诊断........................................................... - 21 - 第5章全文总结 ............................................................................... - 24 - 致谢.................................................................................................... - 25 - 参考文献.............................................................................................. - 27 -