Third, the signal processing circuits were designed for the selected engine sensors and the drive circuit for the electromagnetic valve of electronically controlled injector.
第三，选用发动机电控系统传感器，设计了对应的信号处理电路和电控燃料喷射器电磁阀的驱动电路。
The fuel injector is basically a tiny electric valve, which opens and closes with an electric signal.
油器通常是一个较小的电动阀，由电信号控制打开和关闭。
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