Planetary gear transmission systems or components – Input from independent power sources – Including electric motor input
Reexamination Certificate
2011-07-19
2011-07-19
Pang, Roger (Department: 3655)
Planetary gear transmission systems or components
Input from independent power sources
Including electric motor input
C475S150000, C477S003000
Reexamination Certificate
active
07980980
ABSTRACT:
A hybrid powertrain is provided that includes an engine operatively connected with an input member. The powertrain includes a transmission with first and second electric motor/generators, a differential gear set having multiple members, and selectively engagable torque-transmitting mechanisms. The input member, the output member, the engine and the motor/generators are selectively interconnected through the differential gear set by engagement of the torque-transmitting mechanisms in different combinations. An electronic controller controls the electric motor/generators, the engine and the torque-transmitting mechanisms to provide multiple operating modes between the input member and the output member, including an electric-only operating mode in which the engine is off and one motor generator acts as a motor to provide torque at the output member while the other electric motor/generator can remain substantially stationary, and another electric-only operating mode in which both electric motor/generators act as motors to provide torque at the output member.
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Holmes Alan G.
Nitz Larry T.
Rask Eric M.
Savagian Peter J.
GM Global Technology Operations LLC
Pang Roger
Quinn Law Group PLLC
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