Operation
SG4000/SG5000/S-600DE/D-600M: Fuel is drawn from the
fuel tank by the electric fuel pump, which pushes fuel to the fuel
filter/water separator. Filtered fuel passes through a line from the
outlet fitting on the filter base to the high pressure fuel pump.
The high pressure fuel pump supplies high pressure fuel
to the common rail. The common rail acts as a reservoir for the high
pressure fuel and supplies the high pressure fuel to the electronic
injection nozzles, which inject fuel when energized by the ECU. The
ECU monitors multiple sensors to determine the timing and duration
of the fuel injection pulses.
| 1. | Electronic Injection Nozzles |
| 2. | Return Fuel Port |
| 3. | Supply Fuel Port |
| 4. | High Pressure Fuel Pump (Fuel Supply Pump) |
| 5. | Common Rail |