Transmission with substantially identical gear sets for splitting torque loads

摘要

A transmission comprising: an input member and an output member; a first and a second intermediate shaft; two gear sets having gears concentric with and selectively connectable for rotation with the first and second intermediate shafts, respectively; Output gears that are concentric and rotatable with the output member and mesh with the gear sets; first and second torque transmitting means, each operable to transmit torque from the input member to the first intermediate shaft and the second intermediate shaft, respectively; Torque transmitting mechanisms mounted concentrically with and rotatable with the respective intermediate shafts and operable to selectively engage the gears of the gear sets to connect the engaged gears for common rotation with the respective intermediate shafts; and a controller operatively connected to the torque transmitting mechanisms and to at least one of the torque transmitting devices; wherein the torque transmitting mechanisms and the at least one of the torque transmitting devices are selectively engageable in different combinations to produce different speeds between the input member and the output member comprising at least one gear provided between the input member and the output member using one of the intermediate shafts for conveying torque can be produced; characterized in that the two gear sets are substantially identical in that corresponding gears of the two gear sets each have the same diameter and the same gear teeth number; and the two torque transmitting mechanisms and the two torque transmitting devices engage such that during each of the at least one gear, torque from both the first and second intermediate shafts is carried substantially equally.