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:
Apr. 22, 2014
Filed:
Feb. 21, 2013
GM Global Technology Operations Llc, Detroit, MI (US);
Krunal P. Patel, Sterling Heights, MI (US);
Sean W. McGrogan, Ann Arbor, MI (US);
Lawrence A. Kaminsky, White Lake, MI (US);
Pinaki Gupta, Wixom, MI (US);
Ali K. Naqvi, White Lake, MI (US);
Anthony H. Heap, Ann Arbor, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method for adjusting hydraulic line pressure applied to one or more clutch devices in an electro-mechanical transmission mechanically-operatively coupled to an internal combustion engine and at least one electric machine includes predicting a first plurality of powertrain parameters for an upcoming event. For each of a plurality of engine torques, a predicted output torque and a predicted clutch load are determined that minimize a total powertrain operating cost based on an operator torque request and the predicted first plurality of powertrain parameters. Hydraulic line pressure is adjusted based on the engine torque having a lowest powertrain operating cost among the plurality of available engine torques.