Variable Flow Oil Pump With Integral Vacuum Pump
| ITEM | DESCRIPTION |
|---|---|
| 1 | Brake vacuum check 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 | Brake vacuum pump vanes |
| 10 | Brake vacuum pump housing |
| 11 | Pump drive sprocket |
| 12 | Bolt |
On the Ingenium I4 2.0L diesel and petrol engines the brake vacuum pump is integral with the oil pump.
The variable flow oil pump with integral vacuum pump is located in the oil pan and bolted to the cylinder block from below. The variable flow oil pump with integral vacuum pump is driven by the crankshaft via a chain and sprockets on it and the crankshaft. The chain is immersed in engine oil and has no tensioner. The chain pretensioning is defined by the axial spacings between the variable flow oil pump with integral vacuum pump and the crankshaft.
The brake vacuum pump induces air from the brake booster through a drilling in the cylinder block and a brake vacuum pipe connector on the cylinder block. The air extracted from the brake booster flows through a brake vacuum pipe connector, fitted with a integral check valve, preventing engine oil ingress into the brake system. The air is vented into the oil pan via the brake vacuum check valve. The brake vacuum check valve is a reed valve.
For additional information, refer to: ENGINE (DESCRIPTION AND OPERATION)