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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 9008925 B1

PDFFull Text
Expired
Date of Patent:
Apr. 14, 2015

Filed:

Mar. 02, 2012

Method for controlling a gear brake for an automated change-speed gearbox

Applicants:

Mario Steinborn, Friedrichshafen, DE;

Jochen Breuer, Tettnang, DE;

Christoph Ruechardt, Bodolz, DE;

Thomas Jaeger, Meckenbeuren, DE;

Roland Mair, Tettnang, DE;

Melchor Moro-oliveros, Riva del Garda, IT;

Inventors:

Mario Steinborn, Friedrichshafen, DE;

Jochen Breuer, Tettnang, DE;

Christoph Ruechardt, Bodolz, DE;

Thomas Jaeger, Meckenbeuren, DE;

Roland Mair, Tettnang, DE;

Melchor Moro-Oliveros, Riva del Garda, IT;

Assignee:

ZF Friedrichshafen AG, Friedrichshafen, DE;

Attorneys:

Davis & Bujold, P.L.L.C.

Michael J. Bujold

Primary Examiner:

Calvin Cheung

Int. Cl.
CPC ...
G06F 7/00 (2006.01); F16H 61/68 (2006.01); F16H 61/04 (2006.01); F16H 59/42 (2006.01); F16H 61/682 (2006.01);
U.S. Cl.
CPC ...
F16H 61/68 (2013.01); F16H 2061/0411 (2013.01); F16H 61/0403 (2013.01); F16H 2059/425 (2013.01); F16H 61/682 (2013.01);
Abstract

A method of controlling a transmission brake of an automated change-speed transmission having a control cylinder, that is pressurized by inlet and outlet valves, and an upstream main cut-off valve by which a nominal pressure, supplied to the control cylinder, is regulated. Functional deviations of the transmission brake can be considered during a shifting operation, when the transmission is in neutral, the motor coupling clutch is disengaged and the transmission brake is engaged. The rotational speed gradient and the mass of the transmission components to be braked are determined and used to calculate the current braking torque of the transmission brake. The current braking torque relates to the current regulated nominal pressure, and the determined values are stored in a control unit and used during subsequent actuation of the transmission brake.

Find Patent Forward Citations

Steinborn, Mario. (2015). Method for controlling a gear brake for an automated change-speed gearbox (U.S. Patent No. 9008925). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9008925

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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