Fuel Injector: Operation: Notes
The injector operation can be subdivided into four operating states with the engine running and the high-pressure pump generating pressure:
- Injector closed (with high pressure applied)
- Injector opens (start of injection)
- Injector opened fully
- Injector closes (end of injection)
| 1 - INJECTOR CLOSED (AT-REST STATUS) |
| 2 - ELECTRICAL CONNECTION |
| 3 - TRIGGERING ELEMENT (SOLENOID VALVE) |
| 4 - FUEL INLET (HIGH PRESSURE) FROM THE RAIL |
| 5 - VALVE BALL |
| 6 - BLEED ORIFICE |
| 7 - FEED ORIFICE |
| 8 - VALVE CONTROL CHAMBER |
| 9 - VALVE CONTROL PLUNGER |
| 10 - FEED PASSAGE TO THE NOZZLE |
| 11 - NOZZLE NEEDLE |