In this paper, the author analyzes the causes of common trouble of ignition system in petrol engine and puts forward some ways to find the engine trouble.
分析汽油发动机点火系统常见故障的原因，并提出与查找判断的一些方法。
A flaming Angle measuring system for closed-loop ignition timing control of petrol engines is outlined in this paper, and an experimental example on a BJ492Q petrol engine is provided.
介绍了一种用于汽油机点火正时闭环控制的火焰信号角测量系统，并在BJ 492 Q型汽油机上作了实例试验分析。
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