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. 23, 2013
Filed:
Feb. 10, 2011
Jy-jen F. Sah, West Bloomfield, MI (US);
Robert L. Morris, Milford, MI (US);
Ali K. Naqvi, White Lake, MI (US);
Pinaki Gupta, Wixom, MI (US);
Alexander K. Rustoni, Oxford, MI (US);
Jy-Jen F. Sah, West Bloomfield, MI (US);
Robert L. Morris, Milford, MI (US);
Ali K. Naqvi, White Lake, MI (US);
Pinaki Gupta, Wixom, MI (US);
Alexander K. Rustoni, Oxford, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method for controlling driveline stability in a vehicle includes generating an activation signal indicative of a predetermined vehicle maneuver, which may include a hard braking maneuver on a low coefficient of friction surface. A quick automatic shift to a neutral gear state is executed with a rapid dumping or bleeding off of clutch pressure in a designated output clutch of the vehicle. An activated state of an antilock braking system (ABS) may be used as part of the activation signal. The shift to the neutral gear state may occur only when a current transmission operating state is associated with the high level of driveline inertia. A vehicle includes a transmission and a control system configured to execute the above method.