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:
Oct. 06, 1998
Filed:
May. 03, 1996
Applicant:
Inventor:
Robert Spillner, Dusseldorf, DE;
Assignee:
TRW Fahrwerksysteme GmbH & Co. KG, Dusseldorf, DE;
Primary Examiner:
Int. Cl.
CPC ...
B62D / ;
U.S. Cl.
CPC ...
180417 ; 180421 ; 180422 ;
Abstract
In order to improve a method for controlling the speed of an electromotor-driven pump of a hydraulic power steering device of a motor vehicle as a function of the steering speed, so that the overall efficiency of the system is optimized in a simple manner; it is proposed that the required volume flow of hydraulic fluid, calculated according to a determined steering speed, is increased up to a maximum by an additional correction factor that takes into account the overall efficiency of the system, in order to use the result to calculate and to adjust the set speed of the pump.