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. 18, 2017
Filed:
Jun. 11, 2016
Applicant:
Zf Friedrichshafen Ag, Friedrichshafen, DE;
Inventors:
Christoph Köhler, Friedrichshafen, DE;
Frank Deprez, Mariabrunn, DE;
Assignee:
ZF FRIEDRICHSHAFEN AG, Friedrichshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 61/02 (2006.01); F16H 61/00 (2006.01); B60K 6/387 (2007.10); B60K 6/40 (2007.10); B60K 6/46 (2007.10); F16D 48/06 (2006.01); F16H 63/46 (2006.01); F16H 61/06 (2006.01);
U.S. Cl.
CPC ...
F16H 61/0021 (2013.01); B60K 6/387 (2013.01); B60K 6/40 (2013.01); B60K 6/46 (2013.01); F16D 48/066 (2013.01); F16H 61/0265 (2013.01); F16H 61/0276 (2013.01); B60Y 2200/92 (2013.01); B60Y 2300/42 (2013.01); B60Y 2300/426 (2013.01); F16D 2500/1045 (2013.01); F16D 2500/1107 (2013.01); F16D 2500/50287 (2013.01); F16H 61/0031 (2013.01); F16H 61/061 (2013.01); F16H 63/46 (2013.01); Y10S 903/914 (2013.01); Y10S 903/946 (2013.01); Y10S 903/951 (2013.01);
Abstract
A method for controlling torque transfer of a force-fitting shift element includes controlling a closing pressure at least temporarily upon presence of a closing request for the force-fitting shift element and when a prevailing system pressure of the hydraulic circuit is above a threshold value for the system pressure. The closing pressure is controlled in a manner that is different than upon the presence of the closing request for the force-fitting shift element and when the prevailing system pressure is below the threshold value for the system pressure.