Strong hybrid powertrain with two modes and two motors / generators

摘要

A hybrid electromechanical transmission, which is connected to multiple power sources for starting and propelling a vehicle, includes an output element and a stationary element. The transmission also includes first and second planetary gear sets, and two elements of the first planetary gear set are operatively connected to two elements of the second planetary gear set, and a torque transfer device. The power sources include an engine, a first motor / generator, and a second motor / generator. The engine and the second motor / generator are each functionally connected to the first planetary gear set, and the first motor / generator and the output member are each functionally connected to the second planetary gear set. In addition, the torque transfer device is engageable in order to secure the machine to the stationary element, so that the transmission provides a first and second drive mode for starting and propelling the vehicle.