池振坤 石京杰 李杨 徐敏 林伟

摘要：随着人民生活水平的提高，汽车逐渐进入每个家庭。汽车在使用过程中会产生各种故障。其中怠速抖动是一种常见故障，但是人们缺少对怠速抖动故障的相关知识，很多驾驶人员难以进行区分发动机怠速异常抖动与正常抖动，往往忽略怠速异常抖动故障，从而导致故障继续发展，最终引起车辆严重损坏，甚至危害行车安全。引起怠速抖动的原因很多且涉及的发动机部件也多，使得排除怠速抖动故障较为困难。本文分析了发动机怠速抖动故障产生的原理和原因，总结了排除怠速抖动故障的基本流程，为快速排除怠速抖动故障提供了参考。

Abstract： With the improvement of people's living standards， cars gradually enter every family. Various faults occur in the use of cars. The idle dithering is a kind of common failures， but the lack of related knowledge of idle dithering fault， a lot of drivers to distinguish between abnormal engine idle dithering and normal jitter， tend to ignore the idle abnormal vibration fault， leading to failure to continue to develop， resulting in vehicle damage， and even endanger the safety of driving. There are many causes of idle jitter and many engine parts involved， which makes it difficult to eliminate the fault of idle jitter. This paper analyzes the principle and reason of engine idle speed jitter fault， summarizes the basic process of eliminating idle speed jitter fault， and provides a reference for quickly eliminating idle speed jitter fault.

關键词：汽车发动机;怠速抖动;故障诊断;故障排除

Key words： automobile engine;idle shaking;fault diagnosis;troubleshooting

中图分类号：U472.41                                  文献标识码：A                                  文章编号：1674-957X（2021）21-0144-02

0  引言

汽车发动机怠速抖动故障是汽车发动机常见故障之一，其产生原因较为复杂，维修难度比较高。怠速抖动故障会导致发动机出现较为明显的噪音，并且发动机的稳定性会有所下降，增加发动机的功率消耗。这直接影响了驾驶人员的驾驶体验和乘坐的舒适度。同时，发动机怠速抖动往往也表征汽车发动机存在故障或故障隐患，如不及时维修可能会导致发动机部件的严重损坏，严重威胁了发动机的正常运行，缩短了发动机的使用寿命。因此，车主与维修人员必须重视怠速抖动问题，加大发动机检查、维修工作，降低对于发动机造成的不利影响，尽可能的避免故障出现。……