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:
Jul. 24, 2012
Filed:
Sep. 11, 2008
Matthias Winkel, Sorocaba, BR;
Matthias Winkel, Sorocaba, BR;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A method of controlling an automatic transmission of a motor vehicle that is situated in the force flow between a drive motor and an axle drive of a drive axle or a transfer box in which the current road inclination (α) is determined. To improve the shifting behavior of the transmission, during a transition between driving on a downhill stretch () and on level ground (), after driving on the downhill stretch () and/or after the transition to a thrust operation, a recognition function for determining a downhill run-out () is initiated and, when the downhill run-out () is recognized, a shift to a higher gear during a thrust operation, i.e., a thrust upshift, is carried out before driving onto level ground () and/or before the transition to the traction operation.