ECD SYSTEM

In accordance with the signals from the ECM, the timing control valve opens the valve in the fuel passage between the high-pressure chamber and the low-pressure chamber, thus controlling the injection timing. When the current flows to the coil of the timing control valve, the stator core becomes an electromagnet to push and compress the spring. This causes the moving core to retract and open the fuel passage.

*1	Injection Pump Assembly	*2	Timing Control Valve
*3	Coil	*4	Moving Core