Low Pressure Fuel Pump Assembly - Plug-In Hybrid Electric Vehicles Only
| ITEM | DESCRIPTION |
|---|---|
| 1 | Flange retaining ring |
| 2 | O-ring seal |
| 3 | Fuel supply line connection |
| 4 | Electrical connector - Fuel level sensors |
| 5 | Electrical connector - LP fuel pump |
| 6 | Suction pipe |
| 7 | Swirl pot |
| 8 | Fuel inlet filter |
The LP fuel pump assembly is located in the right side of the fuel tank. The LP fuel pump assembly flange is sealed to the tank with an O-ring seal and secured with a retaining ring.
The top flange of the LP fuel pump assembly provides the internal and external interface for the tank electrical and fuel connections. The flange is formed with fuel level and fuel pump external electrical connectors. That are connected to the 2 fuel level sensors, and the in-tank fuel pump.
The lower part of the LP fuel pump assembly forms the fuel swirl pot, and provides the location for the in-tank fuel pump and the 2 jet pumps. The swirl pot provides a constant reservoir of fuel for the LP fuel pump to supply the HP fuel pump.
The fuel filter is installed on the bottom of the LP fuel pump assembly. The LP fuel pump assembly collects fuel from the right of the fuel tank through the fuel filter. The LP fuel pump assembly collects fuel from the left of the fuel tank through the suction pipe. The LP fuel pump assembly makes sure that sufficient fuel is available in the swirl pot for the engine depending on the demands. The FPDM controls the LP fuel pump assembly with a Low Voltage (3 Phase).