A torque limiting clutch that includes an input member and at least two output members is provided. The input member is configured to receive torque. Each output member is in operational communication with the input member to transfer torque between the input member and each output member. Each output member is configured to slip the operational communication with the input member when a torque above a set torque limit is encountered. Further wherein the slip of the operational communication between the input member and one output member of the at least two output members is independent of the operational communication between the input member and any other output member of the at least two output members.

A power transmission device (100) includes: a rotary shaft (4) extending in the vehicle width direction to transmit power to drive wheels of the vehicle; a rotary parts housing chamber (16) disposed on the end section or in its vicinity of the rotary shaft (4) in the axial direction and adapted to house rotary parts including a clutch (5R); and a breather chamber (81) disposed on the outside (the upper side) of the rotary shaft (4), wherein a first communication passage (80) is provided to communicate with the breather chamber (81) and the rotary parts housing chamber (16). The oil intruded into the breather chamber (81) is discharged from the breather chamber (81) through the first communication passage (80) and is led to the rotary parts housing chamber (16) by the negative pressure due to the pull-in to the rotary parts housing chamber (16) accompanying rotation of the rotary parts.

A power transmission device (100) includes: a rotary shaft (4) extending in the vehicle width direction to transmit power to drive wheels of the vehicle; a rotary parts housing chamber (16) disposed on the end section or in its vicinity of the rotary shaft (4) in the axial direction and adapted to house rotary parts including a clutch (5R); and a breather chamber (81) disposed on the outside (the upper side) of the rotary shaft (4), wherein a first communication passage (80) is provided to communicate with the breather chamber (81) and the rotary parts housing chamber (16). The oil intruded into the breather chamber (81) is discharged from the breather chamber (81) through the first communication passage (80) and is led to the rotary parts housing chamber (16) by the negative pressure due to the pull-in to the rotary parts housing chamber (16) accompanying rotation of the rotary parts.

Piston apparatus for use with vehicle clutches are disclosed. A disclosed drive unit assembly for a vehicle includes a housing defining a first cavity and a second cavity fluidly coupled together. The drive unit assembly also includes a clutch positioned in the first cavity. Rotation of the clutch conveys a fluid from the first cavity to the second cavity. The drive unit assembly also includes a port extending from the second cavity to the first cavity to receive the fluid. The drive unit assembly also includes a piston positioned in the first cavity proximate to the port and configured to operate the clutch. Movement of the piston relative to the port controls a flow of the fluid through the port from the second cavity to the first cavity.

A drive module having a housing, an input pinion, a ring gear driven by the input pinion, a ring gear bearing supporting the ring gear for rotation relative to the housing, a pair of output shafts and a clutch that selectively transmits rotary power between the ring gear and the output shafts. The clutch includes a clutch input, which is rotatably coupled to the ring gear, a clutch plate separator that is rotatably coupled to the clutch input, a pair of clutch outputs, which are each coupled to a respective one of the output shafts, a pair of clutch packs, which transmit rotary power between the clutch input and a respective one of the clutch outputs, and a pair of apply pistons. The apply pistons are housed in the clutch plate separator.

A power transmission device includes first and second engaging elements, a power transmission, and first and second bearings. The first engaging element is rotatable with a first rotation shaft about a rotation axis. The second engaging element is rotatable with a second rotation shaft about the rotation axis. The power transmission is provided between the first engaging element and the second engaging element. The first bearing is provided between the rotation axis and the second engaging element in a radial direction with respect to the rotation axis and supports a first part of the second engaging element. The second engaging element is between the second bearing and the rotation axis in the radial direction. The second bearing supports a second part of the second engaging element. The second part is farther from the first engaging element in an axis direction than the first part.

A power transmission device includes first and second engaging elements, a power transmission, and first and second bearings. The first engaging element is rotatable with a first rotation shaft about a rotation axis. The second engaging element is rotatable with a second rotation shaft about the rotation axis. The power transmission is provided between the first engaging element and the second engaging element. The first bearing is provided between the rotation axis and the second engaging element in a radial direction with respect to the rotation axis and supports a first part of the second engaging element. The second engaging element is between the second bearing and the rotation axis in the radial direction. The second bearing supports a second part of the second engaging element. The second part is farther from the first engaging element in an axis direction than the first part.

In the case of an axle drive unit with a power-shiftable two-speed transmission unit, in order to enable particularly simple and advantageous control of a gear change and to manage with a small number of components and a less complex control logic and control sensor system, the coordination of mechanically-passively implemented shifting thresholds of a friction clutch and a blocking device of a freewheel is provided, which makes it possible to control the friction clutch and the blocking device with the same control variable at always the same level.

The power transmission apparatus includes: a gear chamber, used for accommodating gears disposed on a rotating shaft used for transmitting power to a drive wheel; a clutch chamber, disposed adjacent to the gear chamber in an axial direction of the rotating shaft, and used for accommodating a clutch used for disconnecting or connecting the power transmitted by the rotating shaft to the drive wheel; and a communicating hole, used for communicating the clutch chamber with the gear chamber, where an inclined surface facing toward the communicating hole is provided on an inner surface inside the clutch chamber opposite to an outer peripheral surface of the clutch.

The power transmission apparatus includes: a gear chamber, used for accommodating gears disposed on a rotating shaft used for transmitting power to a drive wheel; a clutch chamber, disposed adjacent to the gear chamber in an axial direction of the rotating shaft, and used for accommodating a clutch used for disconnecting or connecting the power transmitted by the rotating shaft to the drive wheel; and a communicating hole, used for communicating the clutch chamber with the gear chamber, where an inclined surface facing toward the communicating hole is provided on an inner surface inside the clutch chamber opposite to an outer peripheral surface of the clutch.