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:
Aug. 04, 1998
Filed:
Apr. 01, 1996
Applicant:
Inventors:
Thomas Kull, Waiblingen, DE;
Frank Tietze, Stuttgart, DE;
Assignee:
Mercedes-Benz AG, Stuttgart, DE;
Primary Examiner:
Int. Cl.
CPC ...
G06G / ;
U.S. Cl.
CPC ...
701 51 ; 74335 ; 192-358 ; 701 58 ; 701 60 ;
Abstract
In an automatic discrete step gearbox of a motor vehicle, the working pressure of a frictional connection (clutch or brake) to be engaged is set at the beginning of a gear-change by an electronic control unit in accordance with a specified required value variation and additionally as a function of correction values. The correction values are determined as a function of deviations between the required transmission torque value and the actual transmission torque value of the frictional connection.