The electronically controlled injector is the most critical and complex component in the common rail system, and it is also the most difficult component to design and process. By controlling the opening and closing of the solenoid valve, the ECU injects the fuel in the high-pressure rail into the combustion chamber with the best injection timing, injection quantity and injection rate. In order to achieve an effective fuel injection starting point and precise fuel injection quantity, the common rail system uses a dedicated fuel injector with hydraulic servo system and electronic control element (solenoid valve).
The fuel injector consists of a hole-type fuel injector similar to the traditional fuel injector, a hydraulic servo system (control piston, control measuring hole, etc.), and a solenoid valve.
