江阴职业技术学院毕业论文课 题： 发动机怠速不稳故障分析与诊断检修 专 题： 专 业：汽车运用技术学 生 姓 名：刘龙班 级：11 汽运（2）班学 号：11020254指 导 教 师：庞敬礼完 成 时 间：2025 年 12 月 22 日摘 要首先，本论文对发动机的组成及工作原理和工作过程进行了阐述，重点对发动机怠速不稳进行了原因分析，主要有进气系统、燃油系统、点火系统、机械结构方面的原因。同时，本文还对发动机怠速不稳进行了案例分析。例如，奥迪轿车怠速熄火的案例分析，福特嘉年华轿车怠速不稳的故障案例分析等等。通过实例分析可以更好的掌握发动机怠速不稳的故障诊断和检修流程。使自己对发动机怠速方面的故障诊断能力有进一步提升。关键词：发动机；怠速不稳；故障；检修AbstractFirst, the thesis of the composition and working principle and process of the engine are described. Focus on the engine idle speed instability analyzes the reasons, the main reason the intake system, fuel system, ignition system, mechanical structures. Meanwhile, the paper also carried out on the engine idling unstable case analysis. For example, Audi cars idling flameout of case studies, the Ford Fiesta sedan idling unstable failure case studies and so on. Through these examples can be more intuitive understanding of detailed engine idling unstable fault diagnosis and repair processes. This also gives me the engine idling instability cause analysis and fault diagnosis have a more profound understanding and understanding.Keywords: Engine；Idling instability； Fault； Maintenanc目 录摘 要.............................................................................................................................................IAbstract.........................................................................................................................................II目 录.........................................................................................................................................I...
