A drive switching mechanism of a utility vehicle includes: a two-wheel drive and four-wheel drive switching device that switches between two-wheel drive and four-wheel drive of the utility vehicle; and a control unit that controls the drive switching mechanism. The two-wheel drive and four-wheel drive switching device switches between two-wheel drive and four-wheel drive by using a first clutch. The control unit permits the two-wheel drive and four-wheel drive switching device to switch from two-wheel drive to four-wheel drive when a rotation difference of the first clutch becomes equal to or smaller than a predetermined value.

A differential includes two magnetic gears each having an internal rotor, an external rotor, and a rotor of the ferromagnetic poles interposed between the internal and the external rotors. The internal rotor, the external rotor and the rotor of the ferromagnetic pole are coaxial and rotate about a gear axis. The internal rotors are connected to a drive, to be placed in rotation about a respective gear axis by the drive. With external rotors suitable for being connected to respective output semi-axes for placing them in rotation, the rotors of the ferromagnetic poles are connected to adjustment means suitable for adjusting the rotation speed of the rotors of the ferromagnetic poles. With external rotors connected to adjustment means suitable for adjusting their rotation speed, the rotors of the ferromagnetic poles are connected to respective output semi-axes for placing them in rotation.

A differential device includes a differential case, a first output gear and a second output gear, and an interrupting mechanism. The differential case is rotatable. A drive force can be input to the differential case. The first output gear and the second output gear are accommodated in the differential case. The first output gear and a second output are rotatable with respect to the differential case and output the drive force received from the differential case. The interrupting mechanism is disposed on a side of the first output gear and connects and disconnects power transmission between the differential case and the first output gear. The first output gear is coupled to an output shaft through an intermediate member.

A system for using a motor to control a power transmission device for driving a vehicle is provided with a clutch member movable bidirectionally in an axial direction; a base member prevented from rotating about an axis; a counter member axially away from and opposed to the base member, the counter member being restrained from moving in both a circumferential direction and the axial direction; an action member interposed between the base member and the counter member, movable in the axial direction, drivingly coupled with the clutch member, and coupled with the motor to create a rotational motion about the axis; and a cam slope tilting in the circumferential direction and ascending from the base member toward the counter member to convert the rotational motion into a motion of the action member in the axial direction.

Proposed is a disconnector apparatus including a support ring mounted in a casing and including a pinion gear mounted in the support ring and configured to engage with a first side gear, the support ring including a first dog gear part provided on one surface directed toward the first side gear, a clutch ring including a second dog gear part provided on one surface facing the support ring, the second dog gear part being configured to engage with the first dog gear part, and a sleeve connected to an actuator device and configured to move in an engagement direction or disengagement direction, the sleeve being connected to the clutch ring and configured to push the clutch ring in a direction toward the support ring or pull the clutch ring in a direction opposite to the support ring.

An actuator is used to longitudinally move a spline sleeve for controlling drive mode of a differential on an off-road vehicle. The actuator's motor rotates an eccentric knob through a drive train including intermediate gears and a worm gear. The eccentric knob is linked to the spline sleeve through a torsion spring carried on a pivot plate, with legs of the torsion spring pushing a slide block, transferring a moment provided by the eccentric knob into a linear slide force. The pivot plate and torsion spring are jointly mounted on the actuator housing by a hub, opposite the rotational axis of the eccentric knob from the slide block. The slide block includes a contact which completes a circuit through conductive pads on the actuator housing, so the position of the slide block can be directly sensed.

A powertrain includes a drive motor, a gear mechanism, a left half shaft, a right half shaft, a differential, a clutch, and a clutch control component, where an output shaft of the drive motor is connected to the gear mechanism, and the gear mechanism is mounted on the differential by using a bearing.

A limited slip differential (LSD) is mounted on a driven axle of a vehicle to drive left and right wheels. To control the LSD, a speed of the vehicle is determined. A value of a preload for application to the LSD is also determined. The value of the preload is based on a predicted engine torque and on the speed of the vehicle. A preload is applied to the LSD when the value of the preload is greater than zero.

Methods and systems for a differential assembly are provided herein. In one example, a diagnostic method includes generating a clutch fault according to a variance between an initial engagement position and a lock point position of a clutch motor that occur during engagement of an interaxle differential (IAD) locking clutch coupled to the clutch motor. In the IAD system, an actuation assembly is coupled to the clutch motor and the IAD locking clutch.

An adjuster mechanism and an axle assembly that includes an adjuster mechanism. The adjuster mechanism may include a collar assembly that has a collar that may receive a shift collar, a follower, and an adjustment screw. Rotating the adjustment screw may move the collar assembly and the shift collar along an axis.