Patent ID: 8272987

Claim:
A hybrid powertrain for a vehicle comprising: an engine; an input member, an output member, and a stationary member; a single planetary gear set having a first, a second, and a third member; wherein the input member is connected for common rotation with the engine; wherein the output member is connected for common rotation with the second member; a single motor/generator continuously connected for common rotation with the third member without any other motor/generator operatively connected between the input member and the output member; a starter motor operatively connected to the engine for starting the engine; a first, a second, and a third torque-transmitting mechanism; wherein the first torque-transmitting mechanism is selectively engagable to connect the input member for rotation with the first member; wherein the second torque-transmitting mechanism is selectively engagable to ground the first member to the stationary member; wherein the third torque-transmitting mechanism is selectively engagable to ground the third member to the stationary member; and wherein the torque-transmitting mechanisms are engaged in different combinations to establish an electric-only operating mode, an engine-only operating mode; and an electrically-variable operating mode.