Engine Lubrication: Layout
WARNING: This page is about a different variant/trim than selected.
| Item | Description |
|---|---|
| 1 | vane-type pump |
| 2 | Adjusting ring, vane pump |
| 3 | Pressure spring |
| 4 | Control pressure space |
The principle component of the variable oil pump is formed by a vane-cell pump with an adjusting ring.
The illustration shows the adjusting ring in the starting position . The pressure spring pushes the adjusting ring to the left against the stop. In this position the vane-cell pump creates the maximum possible oil flow.
The oil pressure in the control pressure space can be changed depending on the oil pressure demand. If the oil pressure in the control chamber exceeds the force of the pressure spring, then the vane-cell pump adjusting ring is moved to the right. This reduces the supply capacity of the pump.