Patent ID: 9097323
Filing Date: 2015-08-04
Classification: B60K,F16H,Y02T

Abstract:
1. A transmission comprising: an input member; an output member; at least one shaft; wherein the input member and said at least one shaft are rotatable about a first axis of rotation; a countershaft arranged substantially parallel with said at least one shaft and rotatable about a second axis of rotation; wherein the output member is operatively connected to rotate with the countershaft; multiple pairs of intermeshing gears; wherein each of the pairs of intermeshing gears is operable to provide a different gear ratio between said at least one shaft and the countershaft; a plurality of selectively engageable torque-transmitting mechanisms; wherein at least some of the pairs of intermeshing gears require engagement of a respective one of the torque-transmitting mechanisms with a respective one of the pairs of intermeshing gears to transfer torque to the countershaft; a transmission controller operable to control engagement of the torque-transmitting mechanisms to selectively establish at least some of the gear ratios; an electric motor concentric with the first axis of rotation; a planetary gear set concentric with the first axis of rotation; wherein the planetary gear set has a first member, a second member and a third member; a first clutch selectively engageable to operatively connect the input member with the first member; wherein the first member is operatively connectable with the countershaft through at least one of the pairs of intermeshing gears and the second member is connected to rotate commonly with the electric motor, the electric motor being operable to add torque to and receive torque from the second member; wherein said at least one shaft includes a transfer shaft connected to rotate commonly with the first member and an inner shaft concentric with the transfer shaft; wherein the transfer shaft is a sleeve shaft; wherein at least one of said multiple pairs of intermeshing gears is operatively connected with the inner shaft and at least one other of said multiple pairs of intermeshing gears is operatively connected with the transfer shaft; a second clutch selectively engageable to connect one of the members of the planetary gear set with another of the members of the planetary gear set to establish a direct drive from the electric motor to the transfer shaft during which the electric motor rotates commonly with the transfer shaft; a third clutch selectively engageable to connect the input member to rotate commonly with the inner shaft even when the second clutch is not engaged; and wherein the third clutch is disengaged when the second clutch is engaged to establish the direct drive.