Map-controlled oil-pressure control

The oil volume delivered continues to be regulated via the oil pressure according to requirements.

although the map-controlled oil-pressure control is controlled by the DME. using the following input variables:

• Engine speed
• Engine temperature
• Load

The DME activates the oil pressure control valve via a pulse-width modulated signal. The oil pressure control valve then sets a corresponding oil pressure which is used to charge the oil pump control piston.

The map-controlled oil pump allows the oil pump to be controlled even more precisely which contributes towards a reduction in consumption and CO₂ emissions.

The oil pressure required is reduced across the engine speed range. The required output of the oil pump is less compared to volumetric flow control.