An axle assembly that may include a housing assembly, a case, an interaxle differential unit, drive pinion, and an output shaft. The axle assembly may further include a clutch collar that is moveable between a first position and a second position to engage and disengage a rotatably drivable member and the drive pinion.

An axle assembly that may include a housing assembly, a case, an interaxle differential unit, drive pinion, and an output shaft. The axle assembly may further include a clutch collar that is moveable between a first position and a second position to engage and disengage a rotatably drivable member and the drive pinion.

Differentials having plate packs for exerting a braking torque onto the output shafts of the gear unit are known. The brake device is intended to be designed such that effective braking can be achieved using it and that it is easy to service. To this end, the invention makes provision for the brake device to be a drum brake having a passive element, exhibiting a cylindrical frictional surface, and brake shoes, the frictional surfaces of which brake shoes can be placed against the cylindrical frictional surface of the passive element. The passive element can be a brake drum or a radial brake disk, the cylindrical edge of which serves as a frictional surface. The passive element is fastened to the differential cage and/or one of the shafts. The brake shoes are held in a pivotable manner on a carrier plate fastened to the outside of the differential housing.

A four-wheel driving apparatus for a vehicle may include a planetary gear set including a sun gear, a carrier, and a ring gear, and provided so that the sun gear is coupled to a transmission output shaft; a counter shaft provided in parallel to the transmission output shaft; a sleeve included in the counter shaft, receiving operating force of a shift fork to slide along a longitudinal direction of the counter shaft, and provided to be selectively coupled to any one of the sun gear and the carrier of the planetary gear set according to a sliding position; a center differential connected to a front differential through a front output shaft and connected to a rear differential through a rear output shaft; and a transfer gear device disposed to connect between the counter shaft and any one of the front output shaft and the rear output shaft.

A four-wheel driving apparatus for a vehicle may include a planetary gear set including a sun gear, a carrier, and a ring gear, and provided so that the sun gear is coupled to a transmission output shaft; a counter shaft provided in parallel to the transmission output shaft; a sleeve included in the counter shaft, receiving operating force of a shift fork to slide along a longitudinal direction of the counter shaft, and provided to be selectively coupled to any one of the sun gear and the carrier of the planetary gear set according to a sliding position; a center differential connected to a front differential through a front output shaft and connected to a rear differential through a rear output shaft; and a transfer gear device disposed to connect between the counter shaft and any one of the front output shaft and the rear output shaft.

A differential apparatus includes a differential device, and a differential restricting portion configured to restrict a differential operation of the differential device. The differential device includes a differential case which is rotatably disposed, a differential gear which is rotatable while being supported by the differential case and revolves by rotation of the differential case, and a pair of output gears which are meshed with the differential gear and are rotatable relative to each other. The output gears include a gear member provided with a gear portion, and an output member including an output portion configured to output a driving force inputted to the output gears. A cam portion is provided between the gear member and the output member. The differential restricting portion is provided between the differential case and the output member.

Disclosed herein are systems, gearing assemblies and methods for controlling a differential rotation rate between shafts of a vehicle using a variable speed motor. An embodiment includes a gearing assembly including a differential configured to engage a first axle shaft, a second axle shaft, and a drive shaft of a vehicle. The gearing assembly further includes a plurality of adjustment gears configured to engage the differential, configured to be driven by a variable speed motor of the vehicle, and configured to controllably alter a rotation of the first axle shaft relative to the second axle shaft based on rotation produced by the variable speed motor. The plurality of adjustment gears includes a subassembly of planetary gears including a planetary gear carrier, a first set of planetary gears coupled to the planetary gear carrier, and a second set of planetary gears coupled to the planetary gear carrier.

A system is disclosed for detecting when an electronic locking (e-Locker) differential of a vehicle is in a stuck condition. The system may have an e-Locker differential for driving a plurality of wheels, and may be configured to move between first and second positions, one of which places the e-Locker differential in a locked state, and the other of which places it in an unlocked state. An e-Locker coil, when energized may cause movement of the differential e-Locker actuator between the first and second positions. A position sensing subsystem may use an inductance of the e-Locker coil to determine if the differential e-Locker actuator is stuck in one of the first and second positions.

A system is disclosed for detecting when an electronic locking (e-Locker) differential of a vehicle is in a stuck condition. The system may have an e-Locker differential for driving a plurality of wheels, and may be configured to move between first and second positions, one of which places the e-Locker differential in a locked state, and the other of which places it in an unlocked state. An e-Locker coil, when energized may cause movement of the differential e-Locker actuator between the first and second positions. A position sensing subsystem may use an inductance of the e-Locker coil to determine if the differential e-Locker actuator is stuck in one of the first and second positions.

A system and method for electronically controlling a limited slip differential is disclosed. The method includes determining, by an electronic controller of a vehicle, a request for a limited-slip-differential coupling torque to be applied. The request is based upon an estimation of the vehicle's mass. The method also includes transmitting the request to an electronic limited slip differential of the vehicle. The electronic limited slip differential is configured to apply the requested limited-slip-differential coupling torque.