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. 11, 2011
Filed:
Sep. 10, 2007
Brendan M. Conlon, Rochester Hills, MI (US);
Peter J. Savagian, Bloomfield Hills, MI (US);
Alan G. Holmes, Clarkston, MI (US);
Michael O. Harpster, Jr., Oakland Township, MI (US);
Brendan M. Conlon, Rochester Hills, MI (US);
Peter J. Savagian, Bloomfield Hills, MI (US);
Alan G. Holmes, Clarkston, MI (US);
Michael O. Harpster, Jr., Oakland Township, MI (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
An electrically-variable transmission is provided with input member and output member, first and second motor/generators, a first planetary gear set and a final drive gearset. Two or three torque-transmitting mechanisms that are selectively engagable alone or in different combinations to establish at least one forward electric-only operating mode including a series mode, an output split mode, and at least one neutral mode including a purely neutral mode and a neutral battery charge mode. The transmission optionally includes a one-way clutch selected from the group of friction clutch and dog clutch, or is a lockable one-way clutch, for enabling low loss forward operation, regenerative braking functionality, and/or reverse vehicle operation.