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:
Jun. 25, 2013
Filed:
May. 01, 2012
Lawrence A. Kaminsky, White Lake, MI (US);
Ali K. Naqvi, White Lake, MI (US);
Scott T. Weisgerber, Fishers, IN (US);
Jonathan M. Bolenbaugh, Ann Arbor, MI (US);
Lawrence A. Kaminsky, White Lake, MI (US);
Ali K. Naqvi, White Lake, MI (US);
Scott T. Weisgerber, Fishers, IN (US);
Jonathan M. Bolenbaugh, Ann Arbor, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A multi-mode transmission includes a plurality of torque transfer clutches fluidly coupled to a hydraulic circuit fluidly coupled to an independently controllable hydraulic pump. Upon detecting an un-commanded activation of one of the torque transfer clutches, operation of the hydraulic pump is disabled, allowable transmission states are identified, and the one of the torque transfer clutches is synchronized. The hydraulic pump is subsequently enabled and the transmission is operated in one of the allowable transmission states.