怠速电磁阀引起的轿车怠速过高故障诊断

Diagnosis Higher Idle Speed for Car Basic on VSV

造成怠速异常的原因有气路、油路、电路和机械方面,气路故障概率较大,特别是怠速调节装置。在诊断怠速故障时,首先要了解故障车怠速调节装置的种类和基本工作原理,并通过排除法,最后确定故障部位。在对故障部位进行修复后,一定要按照调整怠速的条件进行怠速调整和复查,以确保故障彻底排除。

The causes of abnormal idle speed are in such aspects of gas circuit,oil circuit,electric circuit and mechanism.The probability of gas circuit malfunction is higher than the others,especially the idle speed controlling device.In the process of diagnosing the idle speed malfunction,the sort and basic operating principle of idle speed controlling device of the detected car should be realized firstly,and then the fault part can be ascertained by exclusive method.After repairing the fault part,the idle speed must be adjusted and counterchecked according to a certain condition in order to ensure the malfunction is eliminated thoroughly.