Patent ID: 8043182

Claim:
A hybrid powertrain comprising: an input member; an output member; an engine operatively connected with the input member; a first and a second electric motor/generator; a first differential gear set having a first, a second and a third member; a second differential gear set having a fourth, a fifth, and a sixth member; a stationary member; an interconnecting member continuously connecting the third member, the fifth member, and the output member for common rotation; multiple torque-transmitting mechanisms selectively engageable to connect different members of the differential gear sets with the stationary member or with the first electric motor/generator; wherein the first electric motor/generator is continuously connected for common rotation with the first member; wherein the second electric motor/generator is continuously connected for common rotation with the fourth member; and wherein the powertrain provides multiple operating modes including an electric-only operating mode in which the engine is stationary and one of the first and the second electric motor/generators acts as a motor to provide torque at the output member while the other of the first and the second electric motor/generators is able to remain substantially stationary.