文档介绍：毕业论文课题名称电喷发动机的故障诊断分析分院/专业机械工程/ 汽车检测与维修技术班级汽维 1021 学号…学生姓名…指导教师: … 2013 年6月1日电喷发动机的故障诊断分析┊┊┊┊┊┊┊┊┊┊┊┊┊装┊┊┊┊┊订┊┊┊┊┊线┊┊┊┊┊┊┊┊┊┊┊┊┊ I 摘要发动机是汽车的重要组成, 是车辆运行的动力来源。随着其自动化程度的不断提高, 工作性能的不断完善, 其结构也变得越来越复杂; 外加工作环境十分恶劣, 因此发动机故障发生频率很大, 并且其诊断难度也在不断提高。这样就使发动机成为汽车故障诊断与检测的重点对象。为了迅速诊断故障情况, 提高维修的效率, 世界各国的汽车公司和研究机构纷纷投入大量资金和精力研究汽车发动机电控系统的故障诊断。而我国汽车工业发展较晚, 汽车电子与发达国家差距很大, 所以进行汽车故障诊断技术究对于改善和提高我国汽车检测诊断技术非常重要, 具有重要的现实意义。关键词: 汽车电喷发动机故障诊断诊断方法电喷发动机的故障诊断分析┊┊┊┊┊┊┊┊┊┊┊┊┊装┊┊┊┊┊订┊┊┊┊┊线┊┊┊┊┊┊┊┊┊┊┊┊┊ II Abstract Engine is the important part in the car, isa power source of vehicles running . With the continuous improvement of the degree of automation, the continuous improvement of the performance, the structure is also ing more and plex; Plus the work environment is very bad, so the engine failure frequency is large, and the diagnosis in difficult also unceasingly to enhance . So it make the engine e the focus of the automobile fault diagnosis and detection . In order to quickly diagnose fault condition, improve the efficiency of maintenance, panies and research institutions around the world have invested heavily and energy research automobile engine electronic control system fault diagnosis . And automobile industry development in our country late, automotive electronics and developed countries gap is very big, so the automobile fault diagnosis technology in to improve and enhance our country automobile examination diagnosis technology is very important, has important practical significance . Key word s:V ehicle E lectronic fuel injection engine Fault diagnosis Diagnostic method 电喷发动机的故障诊断分析┊┊┊┊┊┊┊┊┊┊┊┊┊装┊┊┊┊┊订┊┊┊┊┊线┊┊┊┊┊┊┊┊┊┊┊┊┊ III 目录 1 发动机故障诊断概况............................................................................................................................... 1 电喷发动机故障诊断意义.......................................................................................................... 1 现代电喷发动机概况..............................................................................................