초록 ▼

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 i

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.

대표청구항 ▼

The invention claimed is: 1. A hybrid powertrain comprising:an input member;an output member;an engine operatively connected with the input member;first and second electric motor/generators;a differential gear set having multiple members;selectively engageable torque-transmitting mechanisms; wherein

The invention claimed is: 1. A hybrid powertrain comprising:an input member;an output member;an engine operatively connected with the input member;first and second electric motor/generators;a differential gear set having multiple members;selectively engageable torque-transmitting mechanisms; wherein at least some of the input member, the output member, the engine and the motor/generators are selectively interconnected through the differential gear set by engagement of different combinations of the torque-transmitting mechanisms;an electronic controller operatively connected to the electric motor/generators and configured to control the electric motor/generators to provide multiple operating modes between the input member and the output member, including:a first electric-only operating mode in which the engine is off, one of the first and second electric motor/generators acts as a motor to provide torque at the output member while the other of the first and second electric motor/generators is not connected to any of the members of the differential gear set and is able to remain substantially stationary; anda second electric-only operating mode in which the engine is off and both first and second electric motor/generators act as motors to provide torque at the output member; andwherein the engine is not continuously connected to any of the members of the differential gear set and is selectively connectable for common rotation with the second motor/generator by engagement of one of the torque-transmitting mechanisms.