The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 27, 2004
Filed:
Jun. 21, 2002
Michael C Gaunt, Metamora, MI (US);
Andrew R. Dixon, Warren, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
An energy saving system and method reduces power consumption of an electro-hydraulic power steering system of a hybrid vehicle. The electro-hydraulic power steering system includes a first controller that communicates with an electric motor that is coupled to a hydraulic pump. The first controller selects Standby, On or Off operating modes for the electro-hydraulic power steering system. The first controller applies power to the electric motor and the first controller based on the selected operating mode to reduce power consumption. The first controller turns the first controller off and the motor off when in the Off operating mode. The first controller turns the electric motor off and the controller on when in the Standby operating mode. The first controller turns the electric motor on and the controller on when in the On operating mode.