Patent ID: 7914416
Filing Date: 2011-03-29
Classification: B60K,F16H,Y02T,Y10T

Abstract:
1. A hybrid transmission operatively connectable with an engine, comprising: an input member; an output member; a stationary member; multiple planetary gear sets, each with a first, a second, and a third member; and selectively engagable torque-transmitting mechanisms interconnecting the planetary gear sets, the input member, the output member, and the stationary member and engagable in different combinations to establish various operating modes between the input member and the output member; wherein the input member is operatively connected for rotation with the engine and is selectively connectable for rotation with the first member of one of the planetary gear sets by engagement of one of the torque-transmitting mechanisms; an electric motor connected for rotation with the second member of another of the planetary gear sets; wherein the transmission is characterized by an absence of any additional electric motors used to add power to the input member, output member, stationary member, or multiple planetary gear sets; a clutch connecting the input member for rotation with the electric motor; wherein the transmission is operable in an electric-only operating mode when the engine is off and the electric motor powers the second member to which the electric motor is connected for rotation and other ones of the torque-transmitting mechanisms are engaged; and wherein the transmission is operable in an engine-only operating mode when the electric motor is off and the clutch is engaged such that the engine powers the second member.