Patent ID: 7143862
Filing Date: 2006-12-05
Classification: B62D

Abstract:
1. A power steering device for a vehicle with a hydraulic circuit ( 11 ) including a power steering pump ( 1 ), a rotary slide valve ( 5 ), a steering cylinder ( 6 ) and an electromagnetic regulating valve ( 7 ), arranged on the delivery side of the power steering pump ( 1 ) for the demand-dependent control of a volume flow (Q) of a hydraulic medium, by dividing the volume flow (Q) flowing through the regulating valve ( 7 ) into a first basic part stream (A) which can flow to the rotary slide valve ( 5 ) independently of the operating state of the regulating valve ( 7 ), and a second regulated part stream (B), which is directed controllably back to the power steering pump ( 1 ) through a return line 9 or to the rotary slide valve ( 5 ) as a function of the operating state of the regulating valve ( 7 ).