波形分析法在发动机点火系统故障诊断中的应用
毕业论文关键词：点火系；波形分析；故障诊断；
ABSTRACT
Steam engine ignition system is the most basic and most important part of engine, has significant influence on engine performance. With the continuous development of auto industry, auto electronic level gradually improve, auto ignition system has been gradually developed from traditional battery ignition system to widely adopt the use of electronic ignition system, semiconductor ignition system, the transistor ignition system of electronic ignition system is the other way, more and more manufacturers adopt electronic technology and its ingenious used in automobiles, so for the fault diagnosis of engine ignition system becomes more and more important. As the engine to develop in the direction of high speed, lean mixture, the structure of the ignition system is becoming more and more complex, its failure means also more and more detailed, this paper introduces the waveform analysis method to the fault diagnosis of the engine ignition system.
Key words: ignition system; Waveform analysis; Fault diagnosis;
目 录
第一章 概述 1
1.1 课题研究的背景及意义 1
1.2 国内外动态 1
1.2.1国外研究的发展历程及现状 1
1.2.2国内研究的发展历程及现状 3
1.3课题主要内容、难点和关键点 3
第二章 汽车点火系统 4
2.1 点火系统的分类 4
2.1.1触点式点火系统 4
2.1.2电子点火系统 4
2.1.3微机控制点火系统 5
2.2 点火系统组成与功用 5
2.3 点火系统工作过程分析 6
2.4 点火系统的工作原理分析 8
2.4.1触点式点火系统分析 8
2.4.2电子点火系统分析 9
2.4.3.微机控制点火系统分析 10
第三章 点火波形分析 11
3.1 点火标准波形分析 11
3.2点火波形其他典型波形分析 12
3.2.1单缸直列波 13
3.2.2多缸重叠波 13
3.2.3 多缸平列波 14
3.2.4多缸并列波 15
3.3 点火系故障波形分析 15
3.3.1 单缸直列波障波形分析 15
3.3.2 重叠波故障分析 19
3.3.3 多缸平列波形的故障分析 20
3.3.4 多缸并列波形的故障分析(闭合角检测) 22
第四章 实例分析 24
4.1 奥迪100实例分析 24
4.2 道奇捷龙加速不良波形分析 26
结束语 28
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