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:
Nov. 05, 2002
Filed:
Aug. 12, 1999
Ludger Holtmann, Karlsruhe, DE;
Michael Reuschel, Bühl, DE;
Manfred Homm, Bühl-Neusatz, DE;
Ari Ojamies, Georgensgmünd, DE;
LuK Getriebe-Systeme GmbH, Buhl/Baden, DE;
Abstract
A fluid pressure regulating valve, particularly for an automated clutch in the power train of a motor vehicle with a manually shiftable transmission, is adjustable by an electronic control unit which regulates the strength of alternating current being supplied to one or more electromagnets of the valve. The control unit receives signals from sensors which monitor the fluid pressure, the temperature and/or the RPM of one or more constituents of the motor vehicle, and such signals are processed into signals denoting differences between existing and desired pressures of fluid being supplied to and/or by the valve. These signals are compared with information stored in at least one memory of the control unit and denoting memorized differences between actual and desired current strengths. The memorized signals are altered when a comparison in the control unit indicates that the differences ascertained on the basis of signals transmitted by the sensors depart from differences denoted by the memorized information. Such processing of memorized information renders it possible to counteract the effects of wear upon and/or tolerances in assembly of parts of the power train.