电控发动机检测诊断与维修【毕业论文】.doc

PAGE 黄 冈 职 业 技 术 学 院 PAGE PAGE II 毕业设计(论文) 课题名称: 电控发动机检测诊断与维修 院 别 交通学院 专 业 汽车检测与维修技术 班 级 10汽修1班 姓 名 学 号 指导教师 摘 要 汽车电控系统的功用是提高汽车的整体性能,包括动力性、经济性、安全性、舒适性、操纵性、通过性以及排放性能等。虽然汽车车型不同、档次不同,采用电控系统的功能和多少也不尽相同,但是汽车电子控制系统基本结构都是由传感器(传感软件)与开关信号、电控单元ECU和执行器(执行原件)三个部分组成,这是电控系统共同的特点。汽车电控技术所涵盖的范围是非常宽的,几乎遍及了汽车的各个系统,对汽车电控发动机故障原因的分析和寻找需要较高的技术水平，本文通过介绍发动机的组成及工作原理说明并将举几个发动机故障诊断例子说明。 关键字： 电控发动机，检测，故障诊断，维修 PAGE III Abstract The function of automotive electronic control system is to improve the overall performance of the cars, including power, economy, safety, comfort, handling, through sex and emission performance, etc. Although vehicle models, top grade, and different, use different electric control system function and how much is endless also and same, but automotive electronic control system is the basic structure of the sensor (sensing software) and switch signals, the electronic control unit (ECU and actuators (original) execution three parts, it is the common characteristic of electric control system. Automotive electronic control technology is covered by the ChangKuan surrounded the van, almost every system throughout car for automotive electronic control engine, analysis of failure and looking for higher technical level, this paper introduces the structure and working principle of engine and engine that few fault diagnosis said name. And the electronic-controlled engine diagnosis and maintenance method is introduced. Key word: Electronic-controlled engine，maintenance ，fault detection ， diagnosis。 目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc292798972 摘 要 PAGEREF _Toc292798972 \h I HYPERLINK \l _Toc292798973 Abstract PAGEREF _Toc292798973 \h II HYPERLINK \l _Toc292798974 1 发动机电控技术概述 PAGEREF _Toc292798974 \h 4 HYPERLINK \l _Toc292798975 1.1 电控制技术的现状与发展 PAGEREF _Toc292