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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.:

US 10876625 B1

PDFFull Text
Date of Patent:
Dec. 29, 2020

Filed:

Jun. 04, 2019

Transmission control method

Applicant:

Zf Friedrichshafen Ag, Friedrichshafen, DE;

Inventors:

Andreas Wendzel, Grünkraut, DE;

Matthias Reisch, Ravensburg, DE;

Gregor Stoelcker, Berlin, DE;

Assignee:

ZF FRIEDRICHSHAFEN AG, Friedrichshafen, DE;

Attorney:

Dority & Manning, P.A.

Primary Examiner:

Sherry L Estremsky

Int. Cl.
CPC ...
F16H 61/04 (2006.01); F16H 61/02 (2006.01); F16H 63/50 (2006.01); B60W 10/06 (2006.01); B60W 10/11 (2012.01); B60W 30/18 (2012.01); B60W 30/19 (2012.01); F16H 59/44 (2006.01); F16H 59/46 (2006.01); F16H 59/14 (2006.01); F16H 59/70 (2006.01);
U.S. Cl.
CPC ...
F16H 61/0213 (2013.01); B60W 10/06 (2013.01); B60W 10/11 (2013.01); B60W 30/18072 (2013.01); B60W 30/19 (2013.01); F16H 63/502 (2013.01); B60W 2510/0657 (2013.01); B60W 2510/1005 (2013.01); B60W 2520/10 (2013.01); B60W 2710/0666 (2013.01); B60W 2710/1005 (2013.01); F16H 59/14 (2013.01); F16H 59/44 (2013.01); F16H 59/46 (2013.01); F16H 59/70 (2013.01); F16H 2059/147 (2013.01); F16H 2061/0234 (2013.01); F16H 2306/48 (2013.01);
Abstract

A method for operating a transmission for a motor vehicle having an input shaft, a first shaft connectable to the input shaft via a first input clutch and a second shaft connectable to the input shaft via a second input clutch, a plurality of gearshift clutches, and an output shaft. Different gear ratios between the input and output shafts are implementable by selective engagement of the plurality of clutches. A first torque transmission path between the first and second shafts is engageable with a first friction-locking clutch and a second torque transmission path between the first and second shafts is engageable with a second friction-locking clutch. The method includes actuating, at least intermittently during a synchronization phase in an upshift process of the transmission, the first friction-locking clutch to transmit a first torque and the second friction-locking clutch to transmit a second torque.

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