A position detection device includes a magnetic detection element that is positioned radially outside a first clutch component portion and a second clutch component portion of a dog clutch around an axis. The magnetic detection element is provided between a first magnetic flux path portion and a second magnetic flux path portion. The magnetic detection element outputs a sensor signal indicating the direction of a magnetic flux passing between the first magnetic flux path portion and the second magnetic flux path portion. The magnetic detection element outputs a sensor signal indicating a position relationship between the first clutch component portion concerning a first hole portion as well as a first tooth portion and the second clutch component portion concerning the second hole portion as well as the second tooth portion, based on changes in magnetic flux directions depending on the position relationship in a rotation direction around the axis.

Methods and systems are provided for a differential disconnect assembly of a vehicle, the differential disconnect assembly including a dog clutch used to engage and disengage a gear of a differential of the vehicle from a transmission of the vehicle. In one example, a method for operating a dog clutch comprises de-energizing a solenoid coupled to the dog clutch to initiate dog clutch disengagement; and during disengagement of the dog clutch when a return spring coupled to a first toothed interface of the dog clutch applies a first force on the first toothed interface in a first direction away from a second toothed interface, transiently re-energizing the solenoid that applies a second force to the first toothed interface in a second direction which is opposite the first direction.

A driveline disconnect assembly disconnects a wheel hub from a drive shaft supported by a grounding component, such as a suspension knuckle. The driveline disconnect assembly includes a support frame that is fixedly secured to the grounding component. The support frame extends around at least a portion of the drive shaft and extends between first and second support frame sides. The support frame defines a central axis. A linear actuator is fixedly secured to the support frame and extends around at least a portion of the drive shaft. The linear actuator includes a shift sleeve moving axially relative to the support frame. The shift sleeve extends around at least a portion of the drive shaft to selectively engage and disengage the wheel hub to connect and disconnect the wheel hub from the drive shaft, respectively.

An electromagnetic clutch assembly may include a first clutch plate, a second clutch plate, and a synchronizer. The second clutch plate may define an aperture. A portion of the synchronizer may be configured to extend through the aperture. In the absence of a magnetic field, the first clutch plate and the first surface of the second clutch plate may define an air gap and the portion of the synchronizer may extend into the air gap. In response to a first magnetic field, the portion of the synchronizer may contact the first clutch plate. In response to a second magnetic field, the portion of the synchronizer may translate in the aperture toward the second clutch plate and the first clutch plate and the second clutch plate may close the air gap.

A clutch current control circuit may include as a circuit for controlling a current of a clutch connected to a compressor, a strain gauge, wherein a resistance value of the strain gauge is varied according to the movement amount of an Electric Control Valve (ECV) shaft; a switching element of performing a switching operation by comparing a gate-source voltage determined according to a change in the resistance value of the strain gauge and the threshold voltage, and allowing a flow of a first clutch current to generate by a first switching operation state; and a resistor connected in parallel with the switching element, and allowing a flow of a second clutch current to generate by a second switching operation state of the switching element.

A driving force distribution control device mounted on a four-wheel drive vehicle is provided. A coupling mechanism controller connects a drive shaft with an auxiliary driving wheel and sets a fastening force as a first fastening force, when an increase rate in an accelerator opening becomes more than a given value and a vehicle speed is below a given first speed, and changes the fastening force from the first fastening force to a second fastening force, when a slip of at least one of main driving wheels is detected after the fastening force is set to the first fastening force, and before a given time period has lapsed from the setting of the fastening force, or before the vehicle speed becomes faster than a given second speed. The second fastening force at least immediately after the change of the fastening force is a value larger than the first fastening force.

An electromagnetic clutch assembly may include a first clutch plate, a second clutch plate, and a synchronizer. The second clutch plate may define an aperture. A portion of the synchronizer may be configured to extend through the aperture. In the absence of a magnetic field, the first clutch plate and the first surface of the second clutch plate may define an air gap and the portion of the synchronizer may extend into the air gap. In response to a first magnetic field, the portion of the synchronizer may contact the first clutch plate. In response to a second magnetic field, the portion of the synchronizer may translate in the aperture toward the second clutch plate and the first clutch plate and the second clutch plate may close the air gap.

A torque limiter device includes an input shaft having a first contact surface and an output shaft having a second contact surface. The input and output shafts are operable in an engaged position wherein the contact surfaces are brought into mechanical engagement, and a disengaged position wherein the contact surfaces are separated. A biasing mechanism provides a bias force that mechanically biases the input and output shafts in one of the positions and sets a threshold torque. An electromagnet is arranged to selectively provide an electromagnetic force that opposes the bias force when an activation current is supplied. A rotation sensor arrangement measures a respective rotation of the input shaft and of the output shaft. A controller determines a difference in rotations of the shafts and selectively supply the activation current to the electromagnet so as to disengage the input and output shafts when the rotation difference exceeds a threshold.

A control system for a movable body configured to move by utilizing a motor torque generated by a drive motor, is provided. The system includes the drive motor including a rotor configured to output a rotational force and provided with a variable-magnetic-force magnet, and a stator opposing the rotor with a gap therebetween and provided with a plurality of coils. The device includes a powertrain component provided so as to be associated with the drive motor, and a controller having a magnetization controlling module configured to control magnetizing current flowing through the coils so as to change a magnetic force of the magnet. During a magnetization control in which the magnetic force of the magnet is increased by the magnetization controlling module, the controller operates the powertrain component to suppress an increase in a moving force applied to the movable body due to an increase in the motor torque.

The disclosure relates to a clutch assembly for a manual transmission of a motor vehicle, having an axially running transmission input shaft which, by way of a clutch having a central release mechanism disposed on the transmission input shaft, is able to be coupled to a motor output shaft. The transmission input shaft has at least one ferromagnetic measuring portion. The magnetization of the ferromagnetic measuring portion is able to be influenced in a magnetoelastic manner by a torsion of the transmission input shaft. Portions of the central release mechanism surround the at least one measuring portion and has a sensor device which is specified for measuring a variable as a function of the magnetization of at least one measuring portion.