摘 要随着人们生活水平质量的提高和生活节奏的加快，汽车在人们日常生活中

摘 要<br>随着人们生活水平质量的提高和生活节奏的加快，汽车在人们日常生活中的作用越来越重要。汽车能够快速平稳运行主要依赖于发动机的良好运转。由于汽车行业的快速发展，传统发动机的应用越来越少，现在由微机操控的电控发动机在汽车行业应用广泛，它比较符合现代社会节能减排的理念，也具有传统发动机所不具备的优点。由于电控发动机与传统发动机的差异性，一旦电控发动机出现了故障，检测维修人员不能够简单地利用传统发动机的检测技术对电控发动机进行故障检测和维修，所以检测人员需要掌握电控发动机的检测技术，以使电控发动机能够正常、高效运行。因此本文从电控发动机的工作原理出发，分析了电控发动机常见的故障，提出了汽车发动机电控系统故障诊断方法。同时以帕萨特1.8T发动机电控系统为案例分析对象，分析帕萨特电控系统的故障，以期提高汽车电控发动机的使用率。<br><br>关键词：发动机 电控系统 故障诊断

摘 要<br>随着人们生活水平质量的提高和生活节奏的加快，汽车在人们日常生活中的作用越来越重要。 汽车能够快速平稳运行主要依赖于发动机的良好运转。 由于汽车行业的快速发展，传统发动机的应用越来越少，现在由微机操控的电控发动机在汽车行业应用广泛，它比较符合现代社会节能减排的理念，也具有传统发动机所不具备的优点。 由于电控发动机与传统发动机的差异性，一旦电控发动机出现了故障，检测维修人员不能够简单地利用传统发动机的检测技术对电控发动机进行故障检测和维修，所以检测人员需要掌握电控发动机的检测技术，以使电控发动机能够正常、高效运行。 因此本文从电控发动机的工作原理出发，分析了电控发动机常见的故障，提出了汽车发动机电控系统故障诊断方法。 同时以帕萨特1.8T发动机电控系统为案例分析对象，分析帕萨特电控系统的故障，以期提高汽车电控发动机的使用率。<br><br>关键词：发动机 电控系统 故障诊断

Summary<br>With the improvement of people's living standard quality and the acceleration of life rhythm, the role of automobile in people's daily life is more and more important. The fast and smooth operation of the car mainly depends on the good operation of the engine. Due to the rapid development of the automobile industry, the application of traditional engine is less and less. Now the electronic controlled engine controlled by computer is widely used in the automobile industry. It is more in line with the concept of energy conservation and emission reduction in modern society, but also has the advantages that the traditional engine does not have. Because of the difference between the electronic control engine and the traditional engine, once the electronic control engine breaks down, the detection and maintenance personnel cannot simply use the traditional engine detection technology to detect and maintain the electronic control engine, so the detection personnel need to master the detection technology of the electronic control engine, so that the electronic control engine can operate normally and efficiently. Therefore, based on the working principle of the electronic control engine, this paper analyzes the common faults of the electronic control engine, and puts forward the fault diagnosis method of the electronic control system of the automobile engine. At the same time, taking the electronic control system of Passat 1.8T engine as an example, the failure of the electronic control system of Passat is analyzed in order to improve the utilization rate of the electronic control engine.<br>Key words: engine electronic control system fault diagnosis<br>