A power train for a vehicle may include a differential case; a differential ring gear aligned to be concentric to the differential case, and provided in a relatively rotatable state therebetween; and a connection/disconnection mechanism provided to connect or disconnect the differential ring gear and the differential case in a state where power is transferred thereto.

An axle assembly with a carrier housing, an input pinion and a ring gear. The input pinion includes pinion gear teeth and is supported for rotation about a first axis relative to the carrier housing via first and second bearings. The ring gear includes ring gear teeth that are meshed to the pinion gear teeth and a third bearing supports the ring gear for rotation about the second axis relative to the carrier housing. The third bearing is disposed along the second axis on a side of the ring gear that is opposite the first axis.

An axle assembly with a carrier housing, an input pinion and a ring gear. The input pinion includes pinion gear teeth and is supported for rotation about a first axis relative to the carrier housing via first and second bearings. The ring gear includes ring gear teeth that are meshed to the pinion gear teeth and a third bearing supports the ring gear for rotation about the second axis relative to the carrier housing. The third bearing is disposed along the second axis on a side of the ring gear that is opposite the first axis.

A differential arrangement having a gear stage that includes at least one input element and at least two output elements is provided. The at least one output element is connected to at least one electrical device in order to distribute torque.

A differential arrangement having a gear stage that includes at least one input element and at least two output elements is provided. The at least one output element is connected to at least one electrical device in order to distribute torque.

An improved differential for a vehicle is provided which includes a disconnect assembly engaged between a ring gear and pinion gears and/or a gear nest associated with the pinion gears, wherein the disconnect assembly is able to disconnect torsional loading of torque between the ring gear and the pinon gears of the differential. The disconnect assembly selectively connects and disconnects the ring gear and pinon gears by preferably disconnecting from the gear nest disposed therebetween. Disconnection of the ring gear and pinion gears allows the ring gear, differential housing, bearings, and rest of the gear box to stop spinning while the wheels of the vehicle are spinning. The differential pinion gears are mechanically connected to the gear nest such that torque can be transferred from the differential gear nest to the differential pinion gears and then to the differential side gears. A spline ring is supported inside the differential housing and defines a mechanical connection which locks the ring gear and the gear nest to transfer torque therebetween, wherein the mechanical connection may be disconnected to unlock the ring gear and gear nest and disconnect such torsional loading to permit rotation of the side gears and pinion gears independent of the ring gear.

An improved differential for a vehicle is provided which includes a disconnect assembly engaged between a ring gear and pinion gears and/or a gear nest associated with the pinion gears, wherein the disconnect assembly is able to disconnect torsional loading of torque between the ring gear and the pinon gears of the differential. The disconnect assembly selectively connects and disconnects the ring gear and pinon gears by preferably disconnecting from the gear nest disposed therebetween. Disconnection of the ring gear and pinion gears allows the ring gear, differential housing, bearings, and rest of the gear box to stop spinning while the wheels of the vehicle are spinning. The differential pinion gears are mechanically connected to the gear nest such that torque can be transferred from the differential gear nest to the differential pinion gears and then to the differential side gears. A spline ring is supported inside the differential housing and defines a mechanical connection which locks the ring gear and the gear nest to transfer torque therebetween, wherein the mechanical connection may be disconnected to unlock the ring gear and gear nest and disconnect such torsional loading to permit rotation of the side gears and pinion gears independent of the ring gear.

A gearwheel includes a gearwheel body with teeth arranged around its rotational axis. Two adjacent teeth are connected to one another at their tooth roots via a tooth base. The gearwheel includes a supporting structure which has a supporting region at least one or both axial ends of the respective tooth base, which supporting region extends away from the tooth base between the respective adjacent teeth. The supporting regions are connected directly to the adjacent teeth and the tooth base in each case by way of a transition region. The respective transition region surrounds the supporting region in a manner which extends at least partially and contiguously and has a transition geometry in cross section as viewed in the direction of its extent. A geometric variable of the said transition geometry changes steadily, depending on the supporting region, along an axial and/or radial direction with regard to the rotational axis.

A differential gear including a rotatably mounted differential housing and a final driven gear mounted rotationally fixed to the differential housing. The differential housing, on the outer circumferential surface thereof, includes two mating surfaces and that the final driven gear, on the inner circumferential surface thereof, includes two radially opposite mating surfaces. The mating surfaces formed on the outer circumferential surface of the differential housing and the mating surfaces formed on the inner circumferential surface of the final driven gear are each designed as separate mating surfaces which, when viewed in axial direction (a), are arranged geometrically separated from each other by a spacing.

In a differential device including a pair of side gears, a plurality of pinion gears and a pinion shaft, the pinion shaft includes a plurality of shaft parts rotatably fitted to and supporting the plurality of pinion gears respectively, and an annular support part linking the plurality of shaft parts to each other, an annular recess portion is formed in an inner peripheral face of the support part, the pinion shaft has an oil guide part that guides lubricating oil within the recess portion to a part where the shaft part and the pinion gear are fitted together, and an inner end portion of at least one of the side gears protrudes into an inner space of the support part and is positioned within a width of the recess portion in an axial direction of the rotating shaft.