A vehicle drive system includes a slip acquisition unit that acquires that an excessive slip of front wheels or rear wheels has occurred, an addition slip point calculating unit that calculates addition slip points in a time-discrete manner, based on the slip acquisition unit having acquired that the excessive slip has occurred, a cumulative slip point calculating unit that accumulates the addition slip points and calculates a cumulative slip point over time, a drive state switching unit that, switches between 2WD and AWD based on cumulative slip points, and an increase forbidding determination unit that forbids addition or accumulation of the addition slip points, or increase of the cumulative slip points, in a case where a lateral acceleration correlation value that has correlation with lateral acceleration of the vehicle exceeds a lateral acceleration threshold value.

A selectable one-way clutch includes an engagement mechanism. The engagement mechanism is configured to be switched between an engaged state and a disengaged state. The engaged state is a state in which relative rotation between a first and a second members in one of a positive rotational direction and a reverse rotational direction is restricted. The disengaged state is a state in which the relative rotation between the first member and the second member in both of the positive and the reverse rotational direction is permitted. The electronic control unit is configured to apply torque to the one of the first member or the second member by using a motor such that relative rotation in the other one of the positive or the reverse rotational direction is generated between the first member and the second member when the engagement mechanism is switched from the engaged state to the disengaged state.

A driving system for a vehicle includes drive source, a driven portion, a unidirectional power transmitting unit provided on a power transmission path between the drive source and the driven portion, and having a first member, a second member, and an engaging element interposed between the first member and the second member, and an eccentricity acquiring unit adapted to acquire an eccentricity, the eccentricity being a magnitude of deviation between the rotational axis of the first member and the rotational axis of the second member.

The hybrid drive device of the present invention includes a selectable one-way clutch 12 that includes a rotational plate that is capable of receiving the reaction torque of an internal combustion engine and that is provided to a power split mechanism, and that can be changed over between: a locked mode in which, in the state of receiving the reaction torque, positive rotation of the rotational plate is prevented while negative rotation of the rotational plate in the direction opposite to the positive rotation is permitted; and a free mode in which, in the state of receiving the reaction torque, the positive rotation and the negative rotation of the rotational plate are both permitted. And, when misfiring of the internal combustion engine occurs, the selectable one-way clutch is kept in the free mode.

A rear wheel driving device includes first and second electric motors, a wet multi-plate type hydraulic brake provided on motive power transmission paths between the first and second electric motors and rear wheels Wr and causing the drive source side and the wheel side to become disconnected state or connected state by being released or fastened, and a control device that controls switching between the disconnected state and the connected state of the hydraulic brake and controls a vehicle speed. The rear wheel driving device further includes a viscosity acquisition unit that acquires a viscosity correlation amount of oil provided to cool plates of the wet multi-plate type hydraulic brake, and the control device fastens the hydraulic brake or maintains fastening thereof and controls the vehicle speed to lower than a first speed in a case where the viscosity correlation amount is a first prescribed value or higher.

A control system is for a vehicle (Ve), and the control system comprises an electronic control unit (18). The electronic control unit (18) is configured to (i) produce differential rotation by controlling a rotational speed of either a first clutch member (24) or a second clutch member (25) of a selectable one-way clutch (17) by a motor (2), and (ii) execute the following processes in an order of (1.) to (4.) in the case where the electronic control unit (18) switches the selectable one-way clutch (17) from a disengaged state to a engaged state: (1.) controlling the motor (2) such that the differential rotation becomes the negative differential rotation; (2.) switching the selectable one-way clutch (17) from a second state to a first state; (3.) controlling the motor (2) such that the differential rotation becomes the positive differential rotation; and (4.) engaging a part of a strut with a part of the second clutch member (25).

A vehicle includes an engine, motor, transmission, and electronically controlled one-way clutch. The engine includes an output. The motor includes a rotor and a stator. The transmission includes an input that is rotatably coupled to the rotor. The transmission is configured to receive power from the engine and the motor. The electronically controlled one-way clutch has an inner race that is secured to the output of the engine and an outer race that is secured to the rotor. The electronically controlled one-way clutch is configured to rotatably couple the output to the rotor.

The subject disclosure relates to a coil module assembly for a bi-directional clutch assembly having at least one active clutch. The coil module assembly includes a housing having an actuator housing portion and a PCB housing portion. An electromagnetic actuator is disposed in the actuator housing portion for effectuating pivotal movement of the active strut from an unlocked position to a locked position in response to an energization of the electromagnetic actuator. An integrated printed circuit board (PCB) is disposed in the PCB housing portion and is in electrical communication with the electromagnetic actuator for selectively energizing the electromagnetic actuator. The housing further includes a thermally decoupled housing portion which is disposed between the actuator housing portion and the PCB housing portion for thermally decoupling, i.e., reducing heat transfer, from the electromagnetic actuator to the PCB during selective energization of the electromagnetic actuator.

A manual gearbox section for a vehicle includes a section input, a section output, a freewheel device situated in a freewheel torque path between the section input and the section output, and a clutch device situated in a clutch torque path between the section input and the section output. The clutch torque path forms a bypass path with respect to the freewheel device and/or the freewheel torque path. The freewheel device is in the form of a rotational-speed-dependent freewheel device. The freewheel device is in a freewheeling state at a first rotational speed and in a coupled state at a second rotational speed. The second rotational speed is higher than the first rotational speed.

A control system, for a vehicle (Ve), comprises an electronic control unit (18) and a selectable one-way clutch (17). The electronic control unit (18) is configured to produce differential rotation in the selectable one-way clutch (17) by controlling the rotational speed by a motor (2), the differential rotation including positive differential rotation and negative differential rotation, the positive differential rotation being the relative rotation in a direction in which the relative rotation is restricted in an engaged state of the selectable one-way clutch (17), and the negative differential rotation being the relative rotation in a direction in which the relative rotation is permitted in an engaged state of the selectable one-way clutch (17), wherein the electronic control unit (1.) sets a first state of the selectable one-way clutch (17), and (2.) executes lock rotation control in which the differential rotation is maintained at positive differential rotation, in the case where the control unit (18) switches the selectable one-way clutch (17) from the disengaged state to the engaged state.