Drive device for a motor vehicle, includes a differential for distributing a torque that can be supplied via a drive shaft to two output shafts and a superimposition gear coupled with the differential one of the output shafts and an additional motor for superimposing torques supplied from the output shaft, from the differential and from the additional motor, wherein the differential is coupled via a torque reducing transmission ratio device with the superimposition gear, wherein the superimposition gear includes a switching device that can be controlled with a control device, wherein the superimposition gear superimposes in a first switching mode torques supplied to the switching device from the output shaft.

A utility vehicle is configured for independently controlling torque at each of the ground-engaging members.

The control device (67) includes a rotational speed calculator (68), a bearing torque estimator (69), a torque difference calculator (70) and a drive source torque calculator (71). The rotational speed calculator (68) calculates rotational speeds of first and second connection members. The bearing torque estimator (69) estimates a bearing torque, from the calculated, two rotational speeds. The torque difference calculator (70) calculates a target torque difference between torques to be generated by respective drive sources, from the estimated bearing torque, a torque difference amplification factor (), and a difference between drive wheel torque command values for respective left and right drive wheels. The drive source torque calculation module (71) calculates drive source torque command values, which are torques to be generated by the respective, left and right drive sources, using the calculated, target torque difference and the drive wheel torque command values for the respective wheels.

A vehicle driveline system for a vehicle is provided. The system comprises a differential having a differential housing connectable to an engine via a pinion, and two output shafts being connectable with respective wheel axles, and an electrical motor being selectively connected to the differential housing. The differential housing extends into a hollow shaft having a radial protrusion provided with engagement means, such as splines, for connecting with a shifting sleeve, wherein said shifting sleeve is configured to be actuated for connecting the electrical motor to said differential housing.

Disclosed is a hybrid vehicle including a mechanical subsystem and an electrical subsystem, wherein the electrical subsystem includes an electrical storage device, at least one electrical motor fed by the electrical storage device and at least one inverter associated to each of the at least one electrical motor. The hybrid vehicle further includes a command unit adapted to modulate the driving force provided to each of the wheels by the mechanical subsystem and by the electrical subsystem according to predetermined parameters. Also disclosed is a method of managing the electrical power of the hybrid vehicle, including the step of charging the electrical storage device in less than 5 minutes.

Disclosed herein is an apparatus for driving rear-wheels of an environment-friendly vehicle. The apparatus for driving rear-wheels may include: a rear-wheel driver including a first motor and a second motor configured to respectively drive first and second rear wheels; a rear-wheel reducer configured to decelerate drive forces of the first and second motors and transmit the respective decelerated drive forces to the first and second rear wheels; a brake configured to releasably fix the rear-wheel reducer to a vehicle body; and a controller configured to control the rear-wheel driver, the rear-wheel reducer, and the brake. The rear-wheel reducer may include: a first planetary gear set disposed between an output end of the first motor and the first rear wheel; a second planetary gear set disposed between an output end of the second motor and the second rear wheel; and a ring gear coupled to the first and second planetary gear sets.

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.

A driveline assembly including a pair of reducers each having a sun gear fixed about a primary shaft. A plurality of planet gears are meshed with and rotatable about the sun gear. A ring is positioned about and meshed with the planet gears. A planet carrier is connected to a center of each of the planet gears and fixed to a wheel output. A low gear clutch is moveable between an engaged position fixing the ring to a ground in the engaged position, and a disengaged position disconnecting the ring from the ground. An upshift clutch is moveable between a contact position fixing the primary axle to the wheel output, and a released position disconnecting the primary axle from direct connection with the wheel output. A controller selectively shifts the center clutch, the low gear clutch and the upshift clutch. Methods of using the driveline assembly are also provided.

A motor vehicle controller configured to reduce net drive torque applied to one or more driving wheels of a first axle of a driveline when an amount of slip of a driving wheel of the first axle exceeds a first predetermined threshold value. The controller controls torque applied to wheels of a second axle and determines when the vehicle is operating in a split-mu condition in which slip of a driving wheel on one side of each of the two axles exceeds that of a driving wheel on an opposite side of the axles by more than a predetermined amount. The controller performs a split-mu mitigation operation by reducing net torque applied to a driving wheel of the axle that is experiencing the greater slip when an amount of slip of that driving wheel exceeds a second predetermined threshold value less than the first predetermined threshold value.

The present invention discloses a dual-motor coupling drive axle with a torque vectoring function. The dual-motor coupling drive axle includes: a main drive mechanism; a spur gear differential; a TV control drive mechanism; a first single-row planetary gear train, of which a first sun gear is rotatably supported on a first half shaft and a first gear ring is connected with an output end of the TV control drive mechanism; a second single-row planetary gear train, of which a second gear ring is fixed to a drive axle housing and a second sun gear is fixedly connected with the first sun gear; a third single-row planetary gear train.