《汽车在线故障诊断技术探究》-毕业论文设计（学术).doc

w 高职学生毕业论文 题目： 汽车在线故障诊断技术探究 学 院: 汽车与交通工程学院 专 业: 汽车运用技术 学 号: xxx 学生姓名: xxx 指导老师: xxx 日 期: 2012.05 摘 要 汽车故障诊断是汽车维修保养的重要环节，随着现代汽车的普及，人们更加迫切的需要能够快速检测汽车故障的方法，以提高汽车安全性和维修工人的工作效率。为顺应汽车快速发展的潮流，本文对现代汽车必备的车载自诊断系统进行系统研究，并把OBDⅡ系统作为研究对象，并调查了 OBDⅡ系统的一些基本原理，运行参数以及控制原理。另外从日常生活出发，对日常汽车常出现的一些故障进行了解析和探究，并加以解决。同时，也总结出了随着当今汽车和电子科技的高速发展，速度快捷、功能强大、性能可靠、成本低廉的汽车电子控制系统必然备受生产商和消费者亲睐。 汽车电子控制系统应用广泛，能够很好地解决全球范围的汽车尾气排放环保问题和能源危机问题。OBDⅡ系统作为汽车电控系统的典型代表，应当不断地加以发展和创新，以提高汽车性能和市场竞争力。 关键词: 在用汽车；故障诊断；技术探究 Abstract Automobile fault diagnosis is an important part of the automobile repair and maintenance, along with the development of modern automobiles popularization, people more urgent need to quickly motor fault detection methods, in order to improve vehicle safety and repair worker efficiency. In order to comply with the automobile fast development trend, based on modern automobile necessary on-board diagnosis system were studied, and the OBD II system as the research object, and the investigation of OBD II system of some of the basic principle, operation parameters and control principle. In addition to the daily starting from daily life, often appear some faults of automobile is analyzed and studied, and try to solve. At the same time, also summed up with the car and the rapid development of electronic technology, speed fast, powerful function, reliable performance, low cost of car electronic control system is highly producers and consumers pro-gaze. Automotive electronic control system is applied widely, can well solve the global automotive exhaust emission environmental problem and the problem of energy crisis. OBD II system as a motor control system, the typical representative, should continue to try to develop and innovate, to improve vehicle performance and market competitiveness. Key words: automobile；fault diagnosis; technical research 目 录 1 车载自诊断系统Ⅱ概述...................................................1 1.1 OBDⅡ产生的历史渊源...........