A compact planetary differential includes a drive input ring gear having external teeth and a planet gear carrier connected rotationally fixed to the drive input ring gear. First planet gears are located on a first axial side of the planet gear carrier, and second planet gears are located on a second axial side, with the first and second planet gears being arranged in intermeshing pairs, and the planet gear carrier including interface openings. Pin plates include aligned openings for first planet gears and the second planet gears. Pinion shafts extend through these aligned openings and pinion shaft openings in the planet gear carrier. A single one of the first or second planet gears is rotatably supported on each respective one of the pinion shafts. A first sun gear engages with the first planet gears, and a second sun gear engages with the second planet gears.

A transmission (1) for a drive train of a vehicle (100) includes an input shaft (2), a first output shaft (3), a second output shaft (4) and a differential arranged in power flow between the input shaft (2) and the two output shafts (3, 4). A first output torque is transmittable onto the first output shaft (3) by the first planetary gear set (5). A support torque of the first planetary gear set (5) is convertible in the second planetary gear set (6) such that a second output torque is transmittable onto the second output shaft (4). The second planetary gear set (6) is axially adjacent to the first planetary gear set (5), and the planet gears (5.4) of the first planetary gear set (5) do not axially overlap the planet gears (6.4) of the second planetary gear set (6). A second gear set element in the first planetary gear set (5) is a ring gear (5.2) and is connected to a first gear set element in the second planetary gear set (6), which is a sun gear (6.1), for conjoint rotation. The sun gear (6.1) of the second planetary gear set (6) is arranged on an end face of the ring gear (6.2) of the second planetary gear set (6) and axially fixed by a securing ring (17).

The disclosure relates to a transmission comprising an input shaft, a first output shaft, a second output shaft, a first planetary gear set, and a second planetary gear set which is connected to the first planetary gear set. Each of the planetary gear sets comprises multiple elements. The input shaft, the two output shafts, the planetary gear sets, as well as the elements thereof are arranged and designed such thata torque introduced via the input shaft is converted and is distributed to the two output shafts in a defined ratio, and the development of a sum torque is prevented. At least one element of the first planetary gear set is rotationally fixed to another element of the second planetary gear set. Another element of the second planetary gear set is secured to a rotationally fixed component.

A differential transmission having an epicyclic housing, a first sun gear in the epicyclic housing, a second sun gear also in the epicyclic housing and arranged on the same axis of revolution as the first sun gear, a planetary assembly revolves around the axis of revolution together with the epicyclic housing and couples the two sun gears such that they can rotate in opposite directions, and a coupling device in a receiving space defined between the sun gears for generating a bridging torque which couples the two sun gears in a frictional manner. The coupling device has a first coupling ring element supported via a conical surface against a first conical inner wall of the receiving space, and a second coupling ring element supported via a conical surface against a second conical inner wall of the receiving space, and a spring arrangement axially loads the two coupling ring elements such that they are pressed against the respective conical inner wall of the receiving space.

An electric vehicle drive system includes an electric motor, first and second planetary gear sets, including sun gear, carrier and ring gear members, first and second output shafts, and a housing. The members of the first planetary gear set are connected with the electric motor, the first output shaft, and a member of the second planetary gear set. The members of the second planetary gear set are connected with the first planetary gear set, the housing, and the second output shaft. The first planetary gear set provides differential reduction and the second planetary gear set provides reversal and reduction. Optional clutches can provide the function of a limited slip differential and distribute torque preferentially to one output shaft or the other.

A compact planetary differential includes a drive input ring gear having external teeth and a planet gear carrier connected rotationally fixed to the drive input ring gear. First planet gears are located on a first axial side of the planet gear carrier, and second planet gears are located on a second axial side, with the first and second planet gears being arranged in intermeshing pairs, and the planet gear carrier including interface openings. Pin plates include aligned openings for first planet gears and the second planet gears. Pinion shafts extend through these aligned openings and pinion shaft openings in the planet gear carrier. A single one of the first or second planet gears is rotatably supported on each respective one of the pinion shafts. A first sun gear engages with the first planet gears, and a second sun gear engages with the second planet gears.

A driving system includes a drive source for driving a left drive portion and a right drive portion, a power transmission mechanism having a first and second differential mechanisms each including a first rotating element, a second rotating element and a third rotating element and a switching unit. The first rotating elements of the first and second differential mechanisms are connected to each other so as to rotate in the same direction, the second rotating elements of the first and second differential elements are connected to the left drive portion and the right drive portion, respectively, and the third rotating elements of the first and second differential mechanism are connected to each other so as to rotate in opposite directions.

A drive train (1) for a motor vehicle (13) includes a prime mover (2) and a transmission (3) with at least one first planetary gear set (P1) that includes gear set elements with a sun gear (P1.1), a planet carrier (P1.2) and a ring gear (P1.3). The prime mover (2) includes an input shaft (5), which at least indirectly transmits drive power onto an input shaft (4) of the transmission (3). The input shaft (4) is connected to one of the gear set elements of the first planetary gear set (P1) for conjoint rotation. The drive shaft (5) is connected via a spline (6) to the input shaft (4) for conjoint rotation. The spline (6) is arranged axially between a toothing (15) of a first gear set element of the first planetary gear set (P1) and an axial stop (8) configured to axially support the input shaft (4) against the drive shaft (5) in one torque direction.

A transmission (3) for a drive train (2) includes a differential (7) arranged spatially within a housing part (11). The differential includes a first planetary gear set (29) and at least one second planetary gear set (30), which is operatively connected to the first planetary gear set. The housing part (11) includes at least one lubricant feed (15) configured for fluidically connecting a lubricant supply of the transmission (3) to an annular duct (46) formed, at least partially circumferentially, spatially between a planet carrier (32b) of the second planetary gear set (30) and the housing part (11). The planet carrier (32b) of the second planetary gear set (30) is arranged on the housing part (11) in a rotationally fixed and axially secured manner.

A transmission may include an input shaft, a first output shaft, a second output shaft, a first planetary gearset, and a second planetary gearset connected to the first planetary gearset, where the planetary gearsets each comprise numerous elements. The input shaft, the two output shafts, the planetary gearsets, and their elements may be arranged and designed such that a torque input via the input shaft is converted and distributed in a defined ratio to the two output shafts, and the formation of a combined torque is prevented. At least a third element of the first planetary gearset may be connected to a first element of the second planetary gearset via a shaft for conjoint rotation.