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。
2
The fuel injector is basically a tiny electric valve, which opens and closes with an electric signal.