A differential includes a housing, an internal gear pair having an oscillating gear A and an output gear A, an internal gear pair consisting of an oscillating gear B and an output gear B, at least two A-type intermediate gears, and at least two B-type intermediate gears. Each A-type intermediate gear is radially fixed to the housing, and an axis of rotation of each A-type intermediate gear is parallel to an axis of rotation of the housing. Each A-type intermediate gear is meshed with at least one B-type intermediate gear, and the gear ratio of each gear pair consisting of an A-type intermediate gear and a B-type intermediate gear is the same. Each A-type intermediate gear includes an eccentric shaft having an axis parallel to its axis of rotation, and the eccentric shaft on each A-type intermediate gear has the same distance from the axis of rotation of the gear.

An axle assembly having a spigot bearing assembly. The spigot bearing assembly may extend between a motor housing and a rotor output flange that may be fixedly mounted to a rotor. The spigot bearing assembly may rotatably support the rotor output flange and may inhibit deflection of the rotor. A spigot bearing biasing member may exert a biasing force on the spigot bearing assembly.

A differential device may include a housing having an inner surface and an outer surface, said inner surface having an outer ring gear and said outer surface having a first receptacle and a sun gear positioned within the housing, the sun gear having a second receptacle positioned opposite the first receptacle. The differential device may further include an intermediate gear interposed between the sun gear and the outer ring gear, a bearing interposed between the inner surface of the housing and the sun gear, and a central axis intersecting the first receptacle and the second receptacle. The housing and the sun gear may be configured to rotate freely about the central axis.

A drive apparatus for an electric-motor four-wheel drive vehicle includes first and second motors, first and second differential mechanisms, and a propeller shaft. The vehicle includes a first wheel pair including first left and right wheels and a second wheel pair including second left and right wheels and positioned on opposite side to the first wheel pair in a front-rear direction. The first and second motors are configured to output first output torque and second output torque, respectively. The first differential mechanism is configured to distribute the first output torque to a first torque-transmitting member coupled to the first left wheel and a third torque-transmitting member coupled to the propeller shaft. The second differential mechanism is configured to distribute the second output torque to the third torque-transmitting member and a second torque-transmitting member coupled to the first right wheel.

A drive apparatus for an electric-motor four-wheel drive vehicle includes first and second motors, first and second differential mechanisms, and a propeller shaft. The vehicle includes a first wheel pair including first left and right wheels and a second wheel pair including second left and right wheels and positioned on opposite side to the first wheel pair in a front-rear direction. The first and second motors are configured to output first output torque and second output torque, respectively. The first differential mechanism is configured to distribute the first output torque to a first torque-transmitting member coupled to the first left wheel and a third torque-transmitting member coupled to the propeller shaft. The second differential mechanism is configured to distribute the second output torque to the third torque-transmitting member and a second torque-transmitting member coupled to the first right wheel.

A spur-gear differential having first and second planet carrier halves rotationally fixedly connected to first and second bearings, respectively and including holes for planet bolts and connecting rivets. Hole walls at least partially surround each hole and are formed from a material of the first and second planet carrier halves. The first and second bearings have bearing rings. At least one region of an inner edge of the first planet carrier half is arranged radially further out than an outer edge of toothing of a first sun gear. At least one region of an inner edge of the second planet carrier half is arranged radially further out than an outer edge of toothing of a second sun gear.

A spur-gear differential having first and second planet carrier halves rotationally fixedly connected to first and second bearings, respectively and including holes for planet bolts and connecting rivets. Hole walls at least partially surround each hole and are formed from a material of the first and second planet carrier halves. The first and second bearings have bearing rings. At least one region of an inner edge of the first planet carrier half is arranged radially further out than an outer edge of toothing of a first sun gear. At least one region of an inner edge of the second planet carrier half is arranged radially further out than an outer edge of toothing of a second sun gear.

A four-mode dual-motor coupled electric drive axle, including a primary drive motor, an auxiliary drive motor, a reducer, a torque vectoring (TV) coupler, a power coupling differential, a housing, and a power output mechanism. The TV coupler is switchable among disconnected mode, TV mode, and reducer mode by controlling a first clutch and a second clutch. The power coupling differential is switchable between torque coupling mode and speed coupling mode by controlling a third clutch. The electric drive axle is switchable among single-motor drive mode, TV drive mode, dual-motor torque coupling drive mode, and dual-motor speed coupling drive mode by controlling the TV coupler and the power coupling differential.

A four-mode dual-motor coupled electric drive axle, including a primary drive motor, an auxiliary drive motor, a reducer, a torque vectoring (TV) coupler, a power coupling differential, a housing, and a power output mechanism. The TV coupler is switchable among disconnected mode, TV mode, and reducer mode by controlling a first clutch and a second clutch. The power coupling differential is switchable between torque coupling mode and speed coupling mode by controlling a third clutch. The electric drive axle is switchable among single-motor drive mode, TV drive mode, dual-motor torque coupling drive mode, and dual-motor speed coupling drive mode by controlling the TV coupler and the power coupling differential.

An electric powertrain includes an electric machine having a rotor shaft supported for rotation about an axis. A planetary gearset is supported about the axis and includes a sun gear assembly having a sun shaft with a first end connected to the rotor shaft, a second end having a sun gear, and an inner bearing seat disposed therebetween. The planetary gearset further includes a planet carrier having planet gears and defining an outer bearing seat. At least one of the planet gears meshes with the sun gear. The planetary gearset also includes a ring gear meshing with at least one of the planet gears. A sun bearing is supported about the axis and includes an outer race disposed on the outer bearing seat, an inner race disposed on the inner bearing seat, and a plurality of spherical roller elements disposed between the inner and outer races.