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. 12, 2016
Filed:
Apr. 01, 2011
Florian Schneider, Lindenberg, DE;
Mario Steinborn, Friedrichshafen, DE;
Florian Schneider, Lindenberg, DE;
Mario Steinborn, Friedrichshafen, DE;
ZF FRIEDRICHSHAFEN AG, Friedrichshafen, DE;
Abstract
A method of performing a shift operation in an automatic transmission with at least one form-locking shifting transmission part of a vehicle, with which, during a shift to a target gear (G), a rotational speed synchronization, between the transmission input rotational speed and the output side rotational speed, is performed. When a different rotational direction is detected between the transmission input and the transmission output, the rotational speed of the transmission input is reduced to a minimum and the target gear (G) is only shifted when the remaining rotational speed difference, between the rotational speed of the transmission input and the rotational speed of the transmission output can be at least substantially synchronized by the form-locking shift element.