324 - Audi A6 2005 - VolksPage.Net

The functionality of the solenoid valve forServotronic is also used in the A6’05 for the firsttime to reduce the thermal load on the steeringpump.The highest thermal load on the pump occurs whenthe steering is held at the limit position. The endposition of the piston in the steering gear is thenreached, but the pump continues to supply oil.This increases the pressure until the pressurecontrolvalve in the pump opens. The pump thenfeeds via short circuit. This means that the suppliedoil travels back to the intake side of the pump theshort way via the pressure-control valve. Thisincreases the oil temperature significantly in a shortspace of time.Pressure-control valve opensPiston in end position324_04641