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:
Jan. 20, 2009
Filed:
Feb. 27, 2006
John R. Maten, Royal Oak, MI (US);
Casie M. Bockenstette, Ypsilanti, MI (US);
John R. Maten, Royal Oak, MI (US);
Casie M. Bockenstette, Ypsilanti, MI (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
A transmission is provided with torque sensors on each of the power flow paths through the transmission so that actual torque data may be used in place of estimated data in controlling various vehicle operating characteristics, such as clutch apply or release, traction control, stability control and grade control, all of which are affected by the actual torque carried by the transmission. A method of controlling an automatic, multi-speed transmission includes operatively connecting the first torque sensor to the first shaft that partially establishes the first power flow path for a speed ratio of the transmission, sensing torque carried by the first shaft and controlling at least one vehicle operating characteristic based at least partially on the sensed torque.