1A-16 Engine Control System Legend 1. Timer piston 2. Plunger 3. Cam ring 4. Pump cam position signal (engine speed signal) 5. Spill control valve 6. Spill control valve drive signal 7. Engine driver unit 8. Engine control module 9. Accelerator pedal opening signal 10. Accelerator position signal 11. Crankshaft position signal 12. Engine 13. High pressure fuel passage 14. Injection timing control signal 15. Timing control valve 16. Timer piston 17. Pump cam position sensor (engine speed sensor) 18. A-A section 19.
B-B section Fuel Injection Amount Control The electromagnetic spill valve is opened by the signal from ECM (engine control module), pressure in the fuel forced feed unit (rotor unit) is decreased and injection is completed. Injection amount is controlled at this timing. 4 10 A 5 3 B 6 17 9 2 7 8 1 B 19 11 13 A 18 16 15 12 14 LNW21ALF003101