发动机点火系统是汽车电系中电磁干扰的重要来源。
Engine spark ignition system is the main source of electromagnetic interference on vehicle.
本文简要介绍了汽油发动机点火系统的基本工作原理。
The basic working principles of different ignition systems are explained briefly.
最后以发动机点火系统的次级电压为例，说明这种方法的应用过程。
At last, the application course was illustrated by analyzing secondary voltage of ignition system.
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