Patent ID: 8296022
Filing Date: 2012-10-23
Classification: B60K,F16H

Abstract:
1. A torque vectoring device for selectively directing different torques to the two wheels of a drive axle on a vehicle, comprising: two hydraulically controlled disc clutches, connected to a drive shaft that extends through the device, and wherein said clutches when in an engaged condition connect the drive shaft to either of two gear sleeves, each in splines engagement with an eccentric tube eccentrically journaled in relation to the drive shaft, and a torque transmitting mechanism with a gear ratio of 1:1 between the eccentric tube and a differential case sleeve, coaxial with the drive shaft and forming part of a differential case of a differential on the drive axle, to which differential the torque vectoring device is connected; wherein a disc clutch low of said two hydraulically controlled disc clutches is adapted to obtain a rotational speed reduction for the drive shaft and is connected to a gear sleeve low in splines engagement with an outer periphery of the eccentric tube; wherein a disc clutch high of said two hydraulically controlled disc clutches is adapted to obtain a rotational speed increase for the drive shaft and is connected to a gear sleeve high in splines engagement with an inner periphery of the eccentric tube; wherein the disc clutches are arranged on a hub in splines engagement with the drive shaft; and wherein the torque transmitting mechanism comprises alternate discs, namely outer discs in external gear engagement with internal gear teeth in the eccentric tube and inner discs in internal gear engagement with external gear teeth on the differential case sleeve, and pins in corresponding holes in the discs for connecting the discs.