文档介绍：目 录
摘 要 I
ABSTRACT II
第1章 绪 论 1
第2章 丰田皇冠电控系统主要元件的检修 2
2。1节气门位置传感器的检测 2
2。2爆震传感器的检测 2
3
2。4发动机电子控制器ECU、主继电器及其电路的检测 4
4
2。6电动燃油泵和油压调节器的检测 5
第3章 电控系统的检修技巧 7
7
3。2燃油喷射系统维修诊断技巧 7
3。3电子点火系统检修技巧 8
第4章 丰田车系维修实例 10
10
4。1。1故障现象 10
4。1。2故障诊断及排除 10
4。2丰田车速下降的故障与维修 10
4。 10
10
结 论 12
致 谢 13
参考文献 14
摘 要
随着汽车工业和电子技术的发展，汽车电子控制系统的集成化程度越来越高，(特别是轿车)的基本特征，发动机电控作为汽车电控中重要一环,为适应日趋严格的排放、安全法规,已受到国内外汽车厂商的高度重视，并得到了空前发展。虽说发动机电子控制系统使汽车的经济性、动力性和排放净化性都达到了一个较高的程度，但该系统结构复杂，使得维修该系统时难度增加。本文通过介绍丰田皇冠的电控系统的结构、原理、维修注意事项及检修方法。针对汽车电子控制系统自诊断设计中的基本问题,讨论了电控系统的三个主要部分—传感器、执行器和电控单元的故障监测和自诊断的实用技术和方法.
关键词：电控系统 检修 注意事项
Abstract
With the automobile industry and the development of electronic technology, automotive electronic control system integration， more and more high， to become world an inexorable trend of the development of automobile industry。 Automobile electronic words are gradually become modern car （especially cars）, the basic features of engine control as an important part of automotive electronic control， in order to adapt to the increasingly stringent emission, safety regulations, automobile manufacturers at home and abroad has been highly， and get the unprecedented development。 Although the electronic control system to make the car engine performance and fuel economy and emission purification are reached a high level， but the system structure, system maintenance and complex when increased difficulty. The article introduces the Toyota’s crown of system structure, control principle, maintenance and matters needing attention and repair methods. For automotive electronic control system is the basic problem diagnosis design of electric control system, discusses three main parts a sensor and actuator and control unit of fault monitoring and diagnosis of some practical methods and techniques for