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:
May. 21, 2013
Filed:
May. 05, 2010
Martin Miller, Immenstaad, DE;
Mario Steinborn, Friedrichshafen, DE;
Jochen Breuer, Tettnang, DE;
Josef Bader, Friedrichshafen, DE;
Andreas Graf, Stockach-Wahlwies, DE;
Thomas Hafen, Salem, DE;
Martin Miller, Immenstaad, DE;
Mario Steinborn, Friedrichshafen, DE;
Jochen Breuer, Tettnang, DE;
Josef Bader, Friedrichshafen, DE;
Andreas Graf, Stockach-Wahlwies, DE;
Thomas Hafen, Salem, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A method of operating a drivetrain of a motor vehicle. The drivetrain comprises a transmission arranged between a drive assembly and an axle drive, such that an input shaft of the transmission is connected, via a controllable separator clutch, to the drive assembly and an output shaft of the transmission is connected to the axle drive, and such that the transmission comprises at least one shifting element formed as a claw clutch. To reduce the probability that a tooth-on-tooth position may occur in a shifting element formed as a claw clutch, a torque is applied thereto by at least one transmission-internal assembly and/or at least one transmission-external assembly so that a speed difference at the claw clutch approaches a predetermined nominal value, and engagement of the claw clutch is only started when the speed difference of the claw clutch reaches the nominal value.