Output split electrically-variable transmission with electric propulsion using one or two motors

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United States of America Patent

PATENT NO 7867124
SERIAL NO

11852639

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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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.

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Patent Owner(s)

  • GM GLOBAL TECHNOLOGY OPERATIONS LLC

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Conlon, Brendan M Rochester Hills, US 61 1195
Harpster,, Jr Michael O Oakland Township, US 4 77
Holmes, Alan G Clarkston, US 192 3771
Savagian, Peter J Bloomfield Hills, US 54 681

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