A drive system for a vehicle for variable distribution of torque, from a primary input and secondary input, between a left wheel and a right wheel of a vehicle, the drive system includes a first and second torque output shaft, one for each of the left wheel and the right wheel, an open differential, and independently controllable first and second clutch packs, configured such that: torque from the primary input is transferred to each of the torque output shafts via the clutch packs; torque from the secondary input is transferred to each of the torque output shafts via the open differential; torque from one output of the open differential is summed with torque from one clutch pack output in the first torque output shaft; and torque from another output of the open differential is summed with torque from the other clutch pack output in the second torque output shaft.

A family of axle assemblies that employ a modular concept to maximize part commonality amongst the several axle assemblies. The axle assemblies have a housing assembly that employs a main housing that is formed from a casting that is common to all of the axle assemblies.

An axle drive system for a motor vehicle, having a dynamoelectric drive motor (1), a shiftable superimposing transmission having a first and a second gear stage (3, 4), a shift actuator system (5) for shifting the superimposing transmission, as well as a power divider (8) driving two output shafts (10, 12). The drive motor (1), power divider shafts (9, 11), output shafts (10, 12) and dynamoelectric drive motor (1) are arranged coaxially to each other and perpendicular to the direction of travel of the motor vehicle. A particularly compact design is achieved for the axle drive system of the aforementioned type in that the shift actuator system (5) having an electric motor (14) provided for actuation purposes is in its entirety disposed in a space bounded by the first gear stage (3) on one side and the second gear stage (4) on the other side in the axial direction of the drive system.

A torque vectoring device for a vehicle is provided, comprising an electrical motor (110) being connected to a differential mechanism (20) via a transmission (120), wherein the torque vectoring device further comprises at least one control means (130, 150) for changing the torque path of the transmission (120) between a first mode, in which the transmission connects the electrical motor (110) to the input shaft of the differential mechanism (20) for hybrid drive mode, and a second mode, in which the trans mission connects the electrical motor (110) to the output shaft of the differential mechanism (20) for torque vectoring mode.

To reduce the complexity and the outlay involved in the development and implementation in a vehicle of systems and methods known from the prior art for operating a differential-free, clutch-controlled balancing unit having a first clutch and a second clutch, the invention provides for the first clutch and the second clutch to be controlled independently of the driving conditions, and always using the same variable controlled variable of the same value.

An electric drive train for a motor vehicle having first and second electric engines and a planetary gearbox which has a first shaft, a second shaft, a third shaft, a fourth shaft and a fifth shaft, and first and second vehicle wheels. With regard to a torque flow originating from the electric engines running to the vehicle wheels, the electric engines are arranged upstream of the planetary gearbox, which is arranged upstream of the vehicle wheels in the torque flow. A first switching element is provided to couple the second rotor to the first shaft.

An electric drive train for a motor vehicle having first and second electric engines and a planetary gearbox which has a first shaft, a second shaft, a third shaft, a fourth shaft and a fifth shaft, and first and second vehicle wheels. With regard to a torque flow originating from the electric engines running to the vehicle wheels, the electric engines are arranged upstream of the planetary gearbox, which is arranged upstream of the vehicle wheels in the torque flow. A first switching element is provided to couple the second rotor to the first shaft.