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:
Nov. 08, 2011
Filed:
Apr. 07, 2010
Martin Seufert, Steinheim, DE;
Ralf Hettich, Filderstadt, DE;
Josef Glatthaar, Oberndorf, DE;
Ralph Richter, St. Georgen, DE;
Tobias Kalisch, Villingen-Schwenningen, DE;
Marius Bryzgalski, St. Georgen, DE;
Joerg Moellmann, München, DE;
Martin Seufert, Steinheim, DE;
Ralf Hettich, Filderstadt, DE;
Josef Glatthaar, Oberndorf, DE;
Ralph Richter, St. Georgen, DE;
Tobias Kalisch, Villingen-Schwenningen, DE;
Marius Bryzgalski, St. Georgen, DE;
Joerg Moellmann, München, DE;
GETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KG, Untergruppenbach, DE;
Abstract
A method for detecting a fault state in an automated motor vehicle gearbox having two parallel branches. Each branch has a clutch and is configured to transmit driving torques from a drive unit to at least one driven wheel of the motor vehicle. The method comprises the steps of sensing whether both clutches are at least partially closed; of sensing the rotational speed of the at least one driven wheel and sensing the rotational speed of a non-driven wheel, and of detection of a fault state if both clutches are at least partially closed, and a difference between the rotational speeds of the wheels is greater than a predetermined reference value.