A roller cage assembly for an overrunning clutch is provided. The roller cage assembly includes a roller cage, a plurality of rollers and a plurality of roller spring assemblies. The roller cage includes a plurality of spaced support members axially extending between disk shaped first and second end portions. The plurality of rollers are positioned within the roller cage. The plurality of roller spring assemblies engage the roller cage. The plurality of spring roller assemblies are configured to provide a bias force on each roller away from the roller cage. Each roller cage assembly extends between the first and second end portions of the roller cage. Each roller spring assembly further includes at least one pair of attachment members configured to engage a support member of the roller cage.

A gear unit has a differential with two planetary gearsets and gearset elements. A first gearset element of the first planetary gearset is connected to an input shaft, a second gearset element of the first planetary gearset is connected to a first output shaft, a third gearset element of the first planetary gearset is connected to a first gearset element of the second planetary gearset, a second gearset element of the second planetary gearset is connected to a housing, and a third gearset element of the second planetary gearset is connected to a second output shaft. A first output torque is transmittable to the first output shaft. A second output torque is transmittable to the second output shaft. An actuation mechanism is arranged between the first and second output shafts for a co-rotationally fixed connection between the output shafts when the actuation mechanism is actuated.

A front-rear wheel driving force distribution device includes a center differential and a limited slip differential. The limited slip differential includes a first clutch, a second clutch, a first piston, a second piston, and a one-way clutch provided between the first clutch and a rear propeller shaft. If the second clutch is engaged by the second piston, the propeller shaft on the rear side rotates at increased speed as compared with a case where the first clutch is engaged by the first piston. The one-way clutch couples the first clutch and the rear propeller shaft if a number of rotations of the first clutch is same as or higher than a number of rotations of the rear propeller shaft, and idles if the number of rotations of the first clutch is lower than the number of rotations of the rear propeller shaft.

A hybrid drivetrain is provided. The hybrid drivetrain comprises a power source, a transmission, and a tandem axle assembly. The transmission includes a primary clutch and is drivingly engaged with the power source. The tandem axle assembly includes a first axle and a second axle and is drivingly engaged with the transmission. One of the transmission and the tandem axle assembly includes a first motor generator in electrical communication with a battery. The first motor generator and the primary clutch facilitate operating the hybrid drivetrain as a hybrid drivetrain in a plurality of operating modes. The hybrid drivetrain may further comprise second and third motor generators in electrical communication with the battery to facilitate operating the hybrid drivetrain in a plurality of operating modes.

A sensorless clutch state feedback method is provided including a driveline disconnect. To engage the sensorless disconnect, respective speeds of a motor assembly and the sensorless disconnect are synchronized to within a speed delta threshold of each other, a control system facilitates the engagement of the motor assembly and the sensorless disconnect, and the control system determines the success of the engagement by the motor speed response of the motor assembly (e.g., whether the presence of a load is detected).

A wheel unit for an electric vehicle with a disengageable drive includes a wheel support, a wheel hub rotatably supported by the wheel support, and a wheel pin carried by a member driven by the electric motor and rotatably mounted within the wheel hub, by means of two rolling bearings. A coupling device connects in a releasable way the driven member to the wheel hub. The two rolling bearings that support in rotation the wheel pin have respective outer rings mounted by interference fit within a cylindrical wall of a central opening of the wheel hub, and respective inner rings rigidly connected together by means of a spacer sleeve having a predetermined length. The wheel-hub unit with the two rolling bearings and the spacer sleeve can be assembled before being mounted on the wheel pin.

A utility vehicle includes: a pair of front wheels; a pair of rear wheels; at least one front wheel power source configured to drive the front wheels and not to drive the rear wheels; at least one rear wheel power source configured to drive the rear wheels and not to drive the front wheels; and a controller that controls the front wheel power source and the rear wheel power source. Upon receiving a predetermined two-wheel drive command, the controller brings the front wheel power source into a non-operative state while allowing the rear wheel power source to drive the rear wheels. Upon receiving a predetermined four-wheel drive command, the controller brings the front wheel power source into operation while allowing the rear wheel power source to drive the rear wheels.

A wheel disconnect clutch includes a housing attachable to a knuckle and a clutch sleeve slidably supported for axial movement within the housing and having first teeth configured to couple with a wheel hub and second teeth configured to couple with a half shaft. The clutch sleeve is slidable between an engaged position in which the first teeth are coupled to the wheel hub and a disengaged position in which the first teeth are decoupled from the wheel hub. A drive ring is connected to the clutch sleeve and supported within the housing to be axially slidable and rotationally fixed relative to the housing. An actuator ring is disposed adjacent to the drive ring, supported for rotation within the housing, and axially fixed relative to the housing. The driver ring moves the clutch sleeve between engaged and disengaged positions.

An electric drive unit clutch for an automobile includes a first rotatable shaft, a one-way clutch fixedly mounted onto the first rotatable shaft, a dog clutch slidingly mounted onto the first rotatable shaft and adapted to rotate with the first rotatable shaft, a clutch ring positioned between the one-way clutch and the dog clutch, and a second rotatable shaft rotatable engaged with the clutch ring, wherein the clutch ring is adapted to transfer rotational motion from the second rotatable shaft through the one-way clutch and the dog clutch to the first rotatable shaft.

Methods and systems are provided for controlling a multi-axle assembly in a vehicle. The multi-axle assembly may be operated according to a requested mode, where the mode includes providing torque at one, two, or no axles of the multi-axle assembly, and the requested mode may be selected based on vehicle speed. In this way, operation of the multi-axle assembly may be adjusted according to a fuel efficiency of the vehicle while the vehicle is in motion.