Disclosed herein are systems, gearing assemblies and methods for controlling a differential rotation rate between shafts of a vehicle using a variable speed motor. An embodiment includes a gearing assembly including a differential configured to engage a first axle shaft, a second axle shaft, and a drive shaft of a vehicle. The gearing assembly further includes a first plurality of adjustment gears and a second plurality of adjustment gears configured to engage the differential, configured to be driven by a variable speed reversible motor of the vehicle, and configured to controllably alter a rotation rate of a first axle shaft relative to a rotation rate of the second axle shaft based on rotation produced by the variable speed reversible motor. The first plurality of adjustment gears and the second plurality of adjustment gears each including stepped planetary gears.

A drive train arrangement for a tracked or two-wheel drive utility vehicle including a transmission and differential axle. The transmission has on a first side a rotatably driven input adapted to couple to the output of a motive power unit of the vehicle, and on a second side opposed to the first, an output shaft. The differential axle unit, which may be a steering differential, has an input coupled with the transmission unit output shaft and a pair of output shafts operationally coupled with the input via a plurality of planetary gear sets. The transmission unit output shaft extends outwardly of the unit also on the first side, and has a vehicle brake assembly mounted to the output shaft on the first side.

A drive device for a vehicle axle, especially a rear axle, of a two-track vehicle, wherein the vehicle axle includes an axle differential, which can be connected at the input end to a primary drive machine and can be connected at the output end across flange shafts arranged on either side to vehicle wheels of the vehicle axle, wherein the vehicle axle is associated with an additional drive machine and a shiftable superimposing gear, which can be shifted to a torque distribution gear in which a drive torque is generated by the additional drive machine, a torque distribution on the two vehicle wheels can be changed depending on the magnitude and direction of rotation of the drive torque, and shifting can be done to a hybrid mode in which the drive torque generated by the additional drive machine can be coupled to both flange shafts of the vehicle wheels.

A drive device for a vehicle axle, especially a rear axle, of a two-track vehicle, wherein the vehicle axle comprises an axle differential, which can be connected at the primary end to a primary drive machine and can be connected at the output end across flange shafts arranged on either side to vehicle wheels of the vehicle axle, wherein the vehicle axle is associated with an additional drive machine and a shiftable superimposing gear, which can be shifted to a torque distribution gear in which a drive torque is generated by the additional drive machine, depending on the magnitude and direction of rotation of which a torque distribution on the two vehicle wheels can be changed, and shifted to a hybrid mode in which the drive torque generated by the additional drive machine can be coupled to both flange shafts of the vehicle wheels, evenly distributed across the axle differential.

A drive device for a vehicle axle, especially a rear axle, of a two-track vehicle, wherein the vehicle axle includes an axle differential, which can be connected at the input end to a primary drive machine and can be connected at the output end across flange shafts arranged on either side to vehicle wheels of the vehicle axle, wherein the vehicle axle is associated with an additional drive machine and a shiftable superimposing gear, which can be shifted to a torque distribution gear in which a drive torque is generated by the additional drive machine.

The vehicle drive device includes the clutch being provided between the speed reducing mechanism and the differential device, and configured to be rotated integrally with the differential device, and moved in the rotation axis direction to engage with or release from the speed reducing mechanism, and the solenoid pin capable of contacting with and separating from the outer peripheral surface of the clutch, the guide groove is formed on the outer peripheral surface of the clutch so as to intersect in the rotation direction of the clutch, and the solenoid pin contacts the guide groove to thereby move the clutch.

Disclosed herein are systems, gearing assemblies and methods for controlling a differential rotation rate between shafts of a vehicle using a variable speed reversible motor. An embodiment includes a gearing assembly including a differential configured to engage a first axle shaft, a second axle shaft, and a drive shaft of a vehicle. The gearing assembly further includes a first plurality of alignment gears and a second plurality of adjustment gears configured to engage the differential, configured to be driven by a variable speed reversible motor of the vehicle, and configured to controllably alter a rotation rate of a first axle shaft relative to a rotation rate of the second axle shaft based on rotation produced by the variable speed reversible motor.

A drive torque received from a power source is split and output to first and second output shafts through a torque vectoring apparatus including a torque vectoring device that controls a torque ratio of split torques, where the torque vectoring device includes a control motor, a first compound planetary gear set including first and second planetary gear sets having a first rotation element fixed to a housing, a shared second rotation element connected to the first output shaft, and a third rotation element, and a second compound planetary gear set including third and fourth planetary gear sets having a shared fourth rotation element connected to the second output shaft, a fifth rotation element connected to a third rotation element, and a sixth rotation element connected to the control motor.

A vehicle drive system configured to achieve a required driving force of braking force without changing an orientation of a vehicle in the event of slippage of a wheel. The vehicle drive system comprises: a torque generating device; a differential mechanism that allows a relative rotation between a right wheel and a left wheel; a differential restricting device that restricts a differential rotation between the right wheel and the left wheel; and a steering mechanism that controls a turning angle of pairs of the wheels. A first controller controls the relative rotation between the right wheel and the left wheel to be smaller than a predetermined value and second controller further controls a turning angle of the wheels controlled by the steering mechanism.

A drive torque received from a power source is split and output to first and second output shafts through a torque vectoring apparatus including a torque vectoring device that controls a torque ratio of split torques, where the torque vectoring device includes a control motor, a first compound planetary gear set including first and second planetary gear sets having a first rotation element fixed to a housing, a shared second rotation element connected to the first output shaft, and a third rotation element, and a second compound planetary gear set including third and fourth planetary gear sets having a shared fourth rotation element connected to the second output shaft, a fifth rotation element connected to a third rotation element, and a sixth rotation element connected to the control motor.