Methods and systems are provided for operating a vehicle that includes a torque vectoring electric machine. In one example, torque output of a torque vectoring electric machine is adjusted to reduce driveline torque disturbances when the torque vectoring electric machine is activated. The torque output is adjusted in response to a speed difference between a wheel speed and a speed of the torque vectoring electric machine.

Methods and systems are provided for operating a vehicle that includes a torque vectoring electric machine. In one example, torque output of a torque vectoring electric machine is adjusted to reduce driveline torque disturbances when the torque vectoring electric machine is activated. The torque output is adjusted in response to a speed difference between a wheel speed and a speed of the torque vectoring electric machine.

An automatic torque transmission with one or more stages, where each stage has a number of available gear ratios. A planetary gear train includes a planet gear, a sun gear, and a ring gear. The planet gear is configured to drive the sun gear at higher speed and lower torque, and the ring gear at lower speed and higher torque. The sun gear is coupled to an input of a differential gear train. The ring gear is coupled to a different input of the differential gear train. A brake clutch can be selectively coupled to the ring gear, to provide selective braking of the ring gear so as to selectively transfer drive from the ring gear to the sun gear.

Some embodiments are directed to a drive configuration for a skid-steered vehicle that has a pair of traction motors for rotationally driving opposite outputs of the drive configuration. The traction motors are operatively connected to the outputs via respective gearing arrangements for selectively varying gear reduction between each of the traction motors and the corresponding output. The drive configuration also has a steer differential in a torque connection with the first and second outputs of the drive configuration. The drive configuration additional has a steer motor operatively connected to the steer differential for selectively varying the rotational speed of the first and second outputs in use. Also, the traction and steer motors define a volume in which the gearing arrangements and steering differential are at least partially located.

A cycloidal differential includes a driven body and a first cycloidal drive having a first input member rotationally fixed to the body and a first output member configured to connect with a first half shaft. The differential further includes a second cycloidal drive having a second input member rotationally fixed to the body and a second output member configured to connect with a second half shaft. An eccentric shaft, of the differential, extends through the driven body and is connected between the first and second cycloidal drives.

A cycloidal differential includes a driven body and a first cycloidal drive having a first input member rotationally fixed to the body and a first output member configured to connect with a first half shaft. The differential further includes a second cycloidal drive having a second input member rotationally fixed to the body and a second output member configured to connect with a second half shaft. An eccentric shaft, of the differential, extends through the driven body and is connected between the first and second cycloidal drives.

A device of the reduction gear type or of the differential type for a turbine engine of an aircraft is described. The device includes a central sun gear with a rotation axis X, a ring gear extending about the axis X and the sun gear, and a planetary carrier supporting an annular row of planet gears arranged between the sun gear and the ring gear. In some embodiments, the planetary carrier is engaged with the sun gear and the ring gear. The planet gears may have rotation axes Y which may be substantially parallel to said axis X. In some instances, each of the planet gears may be rotationally guided by at least one bearing extending about a tubular support with an axis Y of the planetary carrier. In some embodiments, the tubular support includes an inner cavity for receiving oil and substantially radial through-orifices for the passage of oil from the inner cavity to the at least one bearing. In some embodiments, at least two bearings may be mounted coaxially and adjacently around the support. The at least two bearings may include annular rows of roller bearings maintained in cages with substantially similar diameters and of which the facing peripheral edges are shaped to guide the oil supplying the bearings radially outwards with respect to said axis Y.

A device of the reduction gear type or of the differential type for a turbine engine of an aircraft is described. The device includes a central sun gear with a rotation axis X, a ring gear extending about the axis X and the sun gear, and a planetary carrier supporting an annular row of planet gears arranged between the sun gear and the ring gear. In some embodiments, the planetary carrier is engaged with the sun gear and the ring gear. The planet gears may have rotation axes Y which may be substantially parallel to said axis X. In some instances, each of the planet gears may be rotationally guided by at least one bearing extending about a tubular support with an axis Y of the planetary carrier. In some embodiments, the tubular support includes an inner cavity for receiving oil and substantially radial through-orifices for the passage of oil from the inner cavity to the at least one bearing. In some embodiments, at least two bearings may be mounted coaxially and adjacently around the support. The at least two bearings may include annular rows of roller bearings maintained in cages with substantially similar diameters and of which the facing peripheral edges are shaped to guide the oil supplying the bearings radially outwards with respect to said axis Y.

A differential apparatus includes a differential gear mechanism in which side gears mesh with pinion gears, a pinion shaft that rotatably supports the pinion gear, a slide member that supports the ends of the pinion shaft, and pinion gear washers each disposed between the slide member and a corresponding one of the pinion gears. Movement of each pinion gear washer toward the slide member in the axial direction of the pinion shaft is restricted. When a force of the pinion gear pressing the pinion gear washer toward the slide member is less than a predetermined value, a clearance is formed between the slide member and the pinion gear washer. When the force of the pinion gear pressing the pinion gear washer toward the slide member is greater than the predetermined value, the outer surface of the pinion gear washer abuts the inner surface of the slide member.

A precision cantilever bearing assembly to align the output hubs of an axle assembly which includes a cantilever bearing positioned in one hub bore. The cantilever bearing has an axially extending bore. A shaft plug having an axially extending bore is positioned in the other hub bore. A shaft is positioned in and rotates and counter rotates in the cantilever bearing axially extending bore and is fixed in the shaft plug bore to facilitate alignment of the hubs.