发布时间 : 星期二 文章奥迪a6电控点火系统组成原理及故障分析更新完毕开始阅读ba2ed77e0622192e453610661ed9ad51f01d54c3
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奥迪A6电控点火系统组成原理及故障分析
摘要：汽车点火系统是汽油发动机的重要组成部分，从最开始的磁电机点火系统发展为传统的触
点式蓄电池点火系统、晶体管辅助点火系统、、电控点火系统
其性能的好坏直接影响着发动机能否正常工作。熟悉点火系统的组成和工作原理，掌握其故障检修方法，是从事汽车维修工作的技术人员和工人所必须的。就在二十世
纪70年代，美国GM公司采用了集成电路（IC）点火装置，高能点火（HEI）系统，并在分电器内装上点火线圈和点火控制线路，力图将点火系统做成一体，这种电路具有结构紧凑、可靠性高、成本低、耗电少、不需冷却、响应性好等特点。后期又采用数字式点火时刻控制系统，称为迈塞（MISAR）系统。该系统体积小，由中央处理器（CPU）、存储器（RAM/ROM）和模/数（A/D）转换器等组成。系统可根据输入的冷却液温度、转速和负荷等信号，计算出最佳点火时刻。美国克莱斯勒公司（Chrysler corporation）首先创立了模拟计算机对发动机点火时刻进行控制的控制系统。传统的点火系统，其点火时刻的调整是依靠机械离心式调节装置和真空式调节装置完成的，由于机械的滞后、磨损及装置本身的局限性，故不能保证点火时刻在最佳值。而用ECU控制的点火系统，则可方便地解决以上问题。因为用微机可考虑更多的对点火提前角影响的因素，使发动机在各种工况下均能达到最佳点火时刻，从而提高发动机的动力性、经济性、改善排放指标。ECU控制的点火系统是随着电子技术的进步而发展起来的一门新技术，也是汽车电子化的必然趋势，接下来就浅谈一下奥迪A6点火系统组成
原理及故障分析。
关键词：奥迪A6；电控点火系统；组成及原理；故障分析
ABSTRACT：Automotive gasoline engine ignition system is an important part, from the beginning of the development of magneto ignition system for traditional contact-type battery ignition system, transistor assisted ignition system, electronic ignition system
A direct impact on the performance of the engine is working. Familiar with the ignition system of the composition and working principle, control over their troubleshooting methods, is engaged in vehicle maintenance technicians and workers needed. To 70 years in the twentieth century, the U.S. GM has used a integrated circuit (IC) ignition, high-energy ignition (HEI) system, and built on in the distributor ignition coil and ignition control
circuit, trying to make one of the ignition system, which kinds of circuit has a compact structure, high reliability, low cost, low power consumption, without cooling, response and good characteristics. Late and use of digital ignition timing control system, known as the Mai Sai (MISAR) system. The system is small, the central processing unit (CPU), memory (RAM / ROM), and analog / digital (A / D) converters and other components. System can be based on the input coolant temperature, speed and load signal, calculate the best ignition timing. U.S. Chrysler (Chrysler corporation) created the first analog computer to control engine ignition timing control system. Conventional ignition system, the ignition timing adjustment is to rely on mechanical adjustment device and the centrifugal vacuum conditioning plant completed, the lag due to mechanical wear and the limitations of the device itself, it can not guarantee the best value of the ignition timing. The ECU controls the ignition system used, you can easily solve the above problem. Because the computer may consider using more of the factors affecting the ignition advance angle, the engine can achieve the best conditions in a variety of ignition timing to improve engine power, economy and improve the emission targets. ECU controlled ignition system, with the progress of electronic technology developed a new technology, but also the inevitable trend of automotive electronics, the next to look at the Audi A6 ignition system of the composition principle and failure analysis.
Key Words：Audi A6; electronic ignition system; composition and theory; failure analysis
目 录
绪论.......................................... ......................................... ............................................... 第一章 奥迪A6发动机的新特点................................................................................... 第二章 电脑点火控制系统组成................................. ........................... ........................
2.1 基本知识................................................. .......................... ................................ 2.2 微电脑点火控制系统电路的识读...................................................................... 2.3 电路元件连接关系及作用..................................................................................
2.3.1爆震传感器........................................................................................ ..... 2.3.2温度传感器........................................................................................ ..... 2.3.3曲轴位置传感器...................................................................................... 2.3.4发动机转速传感器...................................................................................
2.3.5发动机负荷信号................................................... ............................... ......
第三章 奥迪A6工作原理........................... ......................... ................... ........................
3.1点火系统有关的传感器及开关信号................................. .......................... ........
3.1.1 曲轴转角与转速传感器：................................. ....................... ............. 3.1.2 曲轴基准位置传感器（点火基准传感器）：..................... ................. 3.2点火提前角.................................................... ................................................. ......
3.2.1概念....................................................... ............................................... ..... 3.2.2发动机启动时点火提前角的控制：............................ ............................. 3.2.3发动机启动后点火提前角的控制................................. ............................ 3.3 闭合角.............................................. ................................................. .....................
3.3.1概念：点火线圈初级线圈通电时间.............................. ......................... .. 3.3.2影响初级线圈通过电流的主要因素有发动机转速和蓄电池电压。....... 3.4通电时间的控制：......................................... .............. ......................... .................. 第四章点火系统检修.................................... .............. ......................... ......................... 4.1点火系统概述................................................ .............. ......................... .................... 4.2 6缸发动机点火系统技术数据.............................. .............. ......................... ........... 4.3点火系统主要部件的检修...................................... .............. ......................... ..........
4.3.1点火线圈的检查............................................ .............. ......................... ......... 4.4发动机转速传感器-G28的检查............................ ......................... ........... ....... ...... 4.5控制单元供电的检查..................................... .............. ......................... ........... .. ..... 4.6爆震控制装置的控制极限的检查................................. .............. ......................... .... 4.7爆震传感器G61和G66的检查................................. .............. ......................... ......
4.8霍尔传感器G40和G163的检查................................. .............. ......................... ..... 4.9火花塞工作原理与检修............................... .............. ......................... ....................... 参考文献............................................ ........................................... ............................................. 致谢............................................ ........................................... .....................................................