Patent ID: 8408352
Filing Date: 2013-04-02
Classification: B62D,Y10T

Abstract:
1. A power steering pump flow and pressure control system for providing hydraulic power from a hydraulic fluid pump to a vehicle steering assist module, the system comprising: a flow control device, including: the flow control device being configured to receive fluid from the pump and to output a steering assist flow, directed to the steering assist module, and a return fluid flow, directed to a pump inlet, the amount of fluid in each flow being determined by the position of the spool element within the device and the position of the spool element being determined by fluid pressure balance within the flow control device, wherein: an electronic control, in electronic communication with the vehicle, including the steering assist module and the pressure control system, adapted to control the pressure balance within the flow control device, the amount of return fluid flow routed through the second pressure relief line being controlled by the electronic control.