Variable displacement pump with electronic control
AssigneeVisteon Global Technologies, Inc.
InventorsLeonard F. Bishop, Shawn P. Cap'ser, John D. Dalpiaz
Life of this patent
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Abstract
A variable displacement pump 28 having an electronically modulated solenoid relief valve 100 for controlling fluid flow into the pump 28. An engine control module coupled to the electronic relief valve 100 monitors vehicle speed and steering wheel turning rate change directs the solenoid relief valve 100 to adjust the pressure of fluid displacing a movable cam ring 44 within the pump 28 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.
Claims7
An electronically controlled variable displacement pump system comprising:
- a variable displacement pump having a pump body;
- a high-pressure fluid chamber disposed within said pump body;
- and
- an electronic relief valve fluidically coupled to said high-pressure fluid chamber that regulates pressure within said high-pressure fluid chamber.
Dependencies are inferred from the claim text.