Patent ID: 8663046
Filing Date: 2014-03-04
Classification: B60K,F16H,Y02T,Y10S,Y10T

Abstract:
1. Hybrid transmission for a motor vehicle, comprising a main gearbox and a single electric machine, wherein the main gearbox is a mechanical gearbox with a plurality of gears and comprises at least one primary shaft adapted to be connected to a drive shaft of an internal combustion engine of the vehicle, and at least one secondary shaft adapted to be connected to vehicle wheels; wherein the electric machine is releasably connected both to said at least one primary shaft and to said at least one secondary shaft by a connection gear set, which includes a first gearwheel idly mounted on said at least one primary shaft and a second gearwheel idly mounted on said at least one secondary shaft and directly or indirectly meshing with said first gearwheel, so as to allow the transmission of the torque between the electric machine and said at least one primary shaft and said at least one secondary shaft; a first coupling device interposed between the electric machine and said at least one primary shaft to control connection between the electric machine and said at least one primary shaft, and a second coupling device interposed between the electric machine and said at least one secondary shaft to control connection between the electric machine and said at least one secondary shaft, wherein said first coupling device is shiftable into an engaged position, in which said first coupling device connects said first gearwheel for rotation with the respective primary shaft, and into a disengaged position, in which said first coupling device disconnects said first gearwheel from the respective primary shaft, and said second coupling device is shiftable at least into an engaged position, in which said second coupling device connects said second gearwheel for rotation with the respective secondary shaft, and into a disengaged position, in which said second coupling device disconnects said second gearwheel from the respective secondary shaft, in such a manner that with said first coupling device in the engaged position the electric machine is able to transmit torque to the primary shaft on which said first gearwheel is mounted, while said second coupling device is in the engaged position the electric machine is able to transmit torque to the secondary shaft on which said second gearwheel is mounted; a secondary gearbox with two or more gears interposed between the electric machine and said first gearwheel or said second gearwheel.