奥迪a6电控点⽕系统组成原理及故障分析(此⽂档为word格式，下载后您可任意编辑修改！)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 systemA 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 controlcircuit, 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。
