Patent ID: 7282003
Filing Date: 2007-10-16
Classification: B60K,F16H,Y02T

Abstract:
1. A vehicle powertrain comprising: an engine; a power take off arrangement including a plurality of quick-change gears; a plurality of continuously intermeshed accessory drive gears, wherein said accessory drive gears are respectively connectable with a plurality of accessories for driving the accessories, and are operatively connected to said power take off arrangement wherein said plurality of quick-change gears are interchangeable to alter an output speed ratio to at least one of said plurality of accessories; and a hybrid electro-mechanical transmission having an input shaft operatively connected to one of said drive gears, said transmission including a transmission housing, an output member for delivering power from said transmission, first and second motor/generators, first, second, and third planetary gear arrangements each having a plurality of gear members, at least one of said gear members in said first or second planetary gear arrangement being connected to said first motor/generator; and a plurality of torque-transmitting mechanisms for selecting operating modes and speeds of the transmission; wherein said plurality of torque-transmitting mechanisms includes a first torque-transmitting mechanism selectively connecting one of said gear members associated with each of said first, second and third planetary gear arrangements to each other and to said output member; a second torque-transmitting mechanism selectively connecting one of said gear members of said third planetary gear arrangement with said transmission housing; and a third torque-transmitting mechanism selectively connecting one of said gear members of said second planetary gear arrangement with said transmission housing, and wherein one of said motor/generators is selectively operable to drive said accessory drive gears when said engine is not running.