Variable Flow Oil Pump With Integral Vacuum Pump
| ITEM | DESCRIPTION |
|---|---|
| 1 | Vacuum exhaust valve |
| 2 | Oil pump housing |
| 3 | Solenoid |
| 4 | Eccentric control ring |
| 5 | Vanes with rotor |
| 6 | Oil pump housing |
| 7 | Calibrated spring |
| 8 | Oil pump housing |
| 9 | Vacuum pump vanes |
| 10 | Vacuum pump housing |
| 11 | Pump drive sprocket |
| 12 | Bolt |
On the INGENIUM I4 2.0L Diesel and Petrol engine the vacuum pump is integral with the engine oil pump.
The Variable Flow Oil Pump with Integral Vacuum Pump is located in the engine sump and bolted to the cylinder block from below. It is driven by the crankshaft via a chain. The chain is immersed in oil and has no tensioner, pretensioning is defined by the axial spacings between the pump and crankshaft.
The vacuum pump induces air from the brake servo through a vacuum line and port in the cylinder block. The air extracted from the brake servo flows through a vacuum pipe connector, equipped with a one way valve, preventing oil ingress into the brake system. The air is vented into the combustion chamber via a reed valve.