An electrified vehicle include a chassis, a front axle coupled to the chassis, a rear axle coupled to the chassis, an electric motor supported by the chassis, and a trailer coupled to a rear end of the chassis and configured to be towed by the electrified vehicle. The electric motor is configured to drive at least one of the front axle, the rear axle, or a component of the electrified vehicle. The trailer includes a trailer frame, a trailer axle coupled to the trailer frame, and an energy storage device supported by the trailer frame. The energy storage device includes a plurality of batteries. The energy storage device configured to power the electric motor.

A motor, a reduction gear, a differential gear, and a housing having a cylindrical shape are included. The motor has a rotor and a stator. The rotor rotates around a motor axis. The stator faces the rotor in a radial direction with a gap interposed between them. The reduction gear includes a planetary gear mechanism, and can increase rotational power output from the motor according to a reduction ratio. The differential gear distributes and outputs the rotational power from the reduction gear. The housing houses the motor, the reduction gear, and the differential gear arranged in an axial direction with the motor axis as a common rotation axis. The housing includes a first attachment portion and a second attachment portion arranged on an outer peripheral surface. The first attachment portion and the second attachment portion are arranged on the opposite sides in a direction perpendicular to the axial direction with respect to the motor axis.

A power transmission device includes a motor, a gear mechanism connected downstream of the motor and lubricated by oil, and a box. The box has a wall part that covers an outer circumference of the gear mechanism, and a jacket part that covers an outer circumference of the wall part. A cooling chamber, in which cooling liquid is introduced, is formed between the wall part and the jacket part. The cooling chamber includes a portion that overlaps with the gear mechanism when seen from a radial direction, and a portion that overlaps the gear mechanism when seen from an axial direction.

The present invention is a powertrain for a hybrid vehicle, comprising a driving/receiving machine (20), a thermal engine (10) and engine shaft (12), a speed variation device (14) including an engine epicyclic gear train (24) with a sun gear (34) and a crown (42) which are each connected to the engine shaft (12) by an engine controlled coupling (26, 28) and to a fixed part (40) of the powertrain by a one-way automatic coupling (30, 32). A planet gear carrier (46) and a machine epicyclic gear train (60) are arranged on a shaft (62) substantially parallel to engine shaft (12). The planet gear carrier comprises a sun gear (64), a crown (72), a planet gear carrier (68) and an epicyclic gear train controlled coupling (88). The speed variation device (14) comprises a device (94) for connecting/disconnecting electric machine (20) with machine epicyclic gear train (60).

An axle subassembly of a trailer of a vehicle includes a wheel bearing having an outer ring mechanically connected to a shaft and an electric drive/generator operably connected to the shaft, wherein the electric drive/generator in a first state is configured to generate electricity from a rotation of the shaft and wherein the electric drive/generator in a second state is configured to drive the shaft, and a controller configured to shift the electric drive/generator unit into the first state and into the second state.

A transfer case includes a primary output shaft, a secondary output shaft, a clutch, and a hub. The clutch includes a plurality of interleaved plates for selectively rotationally coupling the primary output shaft to the secondary output shaft. The hub rotationally couples the primary output shaft and the clutch. The hub includes an outer annular member and an inner annular member. The inner annular member is rotatable within the outer annular member for the hub to selectively release oil into the clutch.

Methods and systems for an electric axle assembly are provided herein. The electric axle assembly includes, in one example, an electric machine with a rotor shaft having an output gear thereon. The electric axle assembly further includes a planetary gearset with a carrier coupled to a pair of axle shafts, a first ring gear with external teeth that are rotationally coupled to the output gear; and a sun gear meshing with a plurality of planet gears that rotate on the carrier, where, in the axle assembly, internal teeth of the ring gear are rotationally coupled to the plurality of planet gears, and where, in the axle assembly, the sun gear or the carrier are grounded by a housing of the electric axle assembly.

The present disclosure relates to a drive unit (1) with a housing (2) and an electric motor (3) arranged therein. A transmission (8) is coupled to the electric motor (3). At least one oil chamber (15) is arranged in the housing (2), the oil chamber(s) having an oil zone (21) and an air zone (22), where the air zone (22) is flow-connected by way of an inlet opening (36) to a venting channel (35) that leads to a vent (32) such that the inlet opening (36) is arranged in a central area (40) of the housing (2) of the drive unit (1).

The present disclosure provides a reducer for an electric vehicle, the reducer including an input shaft connected to a motor, a differential disposed coaxially with the input shaft and relatively rotatable, a planetary gear train configured to decelerate power of the input shaft and transmit the power to a differential casing of the differential, and a drive shaft configured to penetrate the input shaft and coupled to one side gear of the differential.

An electric drive axle in a vehicle is provided. The electric drive axle includes, in one example, an electric motor-generator, a gearbox, and a differential. The gearbox comprises a planetary gear set that includes a sun gear configured to rotate on a sun gear shaft directly coupled to a rotor of the electric motor-generator and an intermediate shaft that includes an idler gear rotationally coupled to a pinion gear that is rotationally coupled to the carrier.