Visteon Global Technolgoies, Inc.

Ford Global Technolgoies, LLC

Leonard F Bishop

John Dalpiaz

Shawn P Cap'ser

Douglas Charles Myers

Roger W Gettel

Daniel J Bleitz

Samir Joshi

James Asam

An apparatus for preventing noise from occurring due to cavitation in a power steering pump during low temperature start-up includes the addition of a multi-passage orifice element for adding wetted surface resistance to high viscous fluid flow downstream from a single passage outlet orifice element of a fluid flow control device and upstream of an associated steering gear or steering assist valve.

Power steering pump flow control

A balanced rotary vane pump for a motor vehicle power steering system includes a rotor having fifteen vanes disposed in a three lobe cam ring. Three inlet ports and three outlet ports disposed in equally spaced pairs provide fluid communication to the three lobes of the cam ring. Because the subject vane pump provides a significantly larger number of pump pulses per revolution which are more closely spaced in time and may define smaller volumes, the pulsatile nature of the output and thus vibration as well as the excitation of sympathetic vibration is greatly reduced.

Balanced vane pump

A variable displacement pump ( ) having a combination inlet port ( ) and an outlet ( ) formed integrally on the rear body ( ). By integrating the combination inlet port ( ) and outlet ( ) on the rear body ( ), this invention simplifies the manufacture of the pump ( ) as compared with known variable displacement pumps.

Variable displacement pump

A variable displacement pump having an electronically modulated solenoid relief valve for controlling fluid flow into the pump . An engine control module coupled to the electronic relief valve monitors vehicle speed and steering wheel turning rate change directs the solenoid relief valve to adjust the pressure of fluid displacing a movable cam ring within the pump to provide for greater fluid flow when evasive maneuvers may be required and lesser fluid flow when low steering efforts are needed, thus resulting in energy and fuel savings.

Variable displacement pump with electronic control

A hydraulic fluid pump (,), including a housing (,), a pumping apparatus (,), an inlet (,), a pressure chamber (,), an outlet (,), a bypass valve (,) and a diffuser (,). Wherein cavitation is reduced by using the diffuser (,) to supercharge fluid from the outlet (,) to increase the static pressure of the fluid entering the pumping apparatus (,). And wherein the inlet (,) and the diffuser (,) are designed to minimize the complexity, cost and packaging considerations of the hydraulic fluid pump (,).

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Sterling Heights, MI, United States of America

Leonard F Bishop