Patent ID: 8262524
Filing Date: 2012-09-11
Classification: B60K,B60L,F16H,Y02T,Y10T

Abstract:
1. A hybrid powertrain comprising: an input member; an output member; a stationary member; an engine operatively connected with the input member; a differential gear set having a first, a second, and a third member; a first and a second electric motor/generator each continuously connected for common rotation with a different one of the members of the differential gear set; wherein the output member is continuously connected for common rotation with one of the members of the differential gear set that is not connected for common rotation with either of the motor/generators; a first torque-transmitting mechanism selectively engageable to connect the input member for common rotation with one of the motor/generators; a second torque-transmitting mechanism selectively engageable to connect the input member for common rotation with the other one of the motor/generators; a third torque-transmitting mechanism selectively engageable to connect the stationary member to one of the members of the differential gear set that is continuously connected for common rotation with said one of the motor/generators; a fourth torque-transmitting mechanism selectively engageable to connect the stationary member to one of the members of the differential gear set that is continuously connected for common rotation with said other one of the motor/generators; wherein the torque-transmitting mechanisms are engaged in different combinations such that the powertrain is operable 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 both electric motor/generators act as motors to provide torque at the output member.