High Pressure Fuel Pump
WARNING: This page is about a different variant/trim than selected.
| ITEM | DESCRIPTION |
|---|---|
| A | Low Pressure (LP) fuel supply connection - Fuel filter to fuel pump |
| B | Low Pressure (LP) fuel return connection - Fuel pump to fuel tank |
| C | High Pressure (HP) fuel supply connection - Fuel pump to fuel rail |
| 1 | Pump plunger |
| 2 | Fuel metering valve |
| 3 | High Pressure (HP) fuel pump driveshaft |
| 4 | Fuel temperature sensor |
The High Pressure (HP) fuel pump located on the left side of the cylinder block and secured with three bolts. The pump is driven by the primary timing chain via a sprocket attached the HP fuel pump driveshaft.
The HP fuel pump is a single plunger, cam-driven type with two pumping strokes per revolution.
The HP fuel pump maximum fuel pressure output differs with engine variant as follows:
- Ingenium I4 2.0L Diesel 180 PS - 1800 bar (26, 107 lbf/in2 )
- Ingenium I4 2.0L Diesel 240 PS - 2200 bar (31, 908 lbf/in2 ).
The HP fuel pump consists of the following components:
- Single plunger HP fuel pump
- Fuel temperature sensor
- Fuel metering valve.
A controlled amount of fuel is allowed to leak off through the HP fuel pump, and returned through a leak-off pipe to the fuel tank. The leak-off fuel provides the cooling and lubrication for the HP fuel pump internal components.