A utility vehicle includes a stack sensor for detecting whether a stack has occurred in a vehicle, and a controller. When a differential device is in an open state, the controller determines the presence or absence of a stack based on a detection result by the stack sensor. When it is determined that a stack has occurred, the controller activates the brake device to reduce a rotation speed of a stack wheel, which is a wheel idling due to the stack.

When an engine during rotation stop is started, a target cranking speed is set to a value at which a first rotating machine MG1 is maintained in an electric power generation state when a request engine power is an output that needs a turbocharging pressure and which is higher than when the request output is not the output that needs the turbocharging pressure, and even after the engine is brought into the operating state, an MG1 cranking torque is controlled to apply a torque for increasing an engine speed of the engine to the target cranking speed to the engine. In this way, it is possible to increase the engine speed after an autonomous operation more quickly while suppressing power consumption of the first rotating machine MG1.

When an engine during rotation stop is started, a target cranking speed is set to a value at which a first rotating machine MG1 is maintained in an electric power generation state when a request engine power is an output that needs a turbocharging pressure and which is higher than when the request output is not the output that needs the turbocharging pressure, and even after the engine is brought into the operating state, an MG1 cranking torque is controlled to apply a torque for increasing an engine speed of the engine to the target cranking speed to the engine. In this way, it is possible to increase the engine speed after an autonomous operation more quickly while suppressing power consumption of the first rotating machine MG1.

For use in all wheel drive vehicles with a rear electronic differential, a device containing a switch for making and breaking an electrical connection in a ground line of a differential harness. When the circuit is broken and the rear electronic differential is no powered, the rear electronic differential does not power the rear axles. A wireless remote control has buttons that when pressed send a wireless signal to a receiver connected to the switch. When the first button in the remote control is pressed, the switch breaks the connection in the ground line. When the second button in the remote control is pressed, the switch completes the connection in the ground line.

For use in all wheel drive vehicles with a rear electronic differential, a device containing a switch for making and breaking an electrical connection in a ground line of a differential harness. When the circuit is broken and the rear electronic differential is no powered, the rear electronic differential does not power the rear axles. A wireless remote control has buttons that when pressed send a wireless signal to a receiver connected to the switch. When the first button in the remote control is pressed, the switch breaks the connection in the ground line. When the second button in the remote control is pressed, the switch completes the connection in the ground line.

A control apparatus for a four-wheel-drive vehicle is configured to, during braking of the vehicle in a two-wheel-drive state, determine whether or not a degree of a yaw movement for deflecting the vehicle is larger than a predetermined first degree. When the degree of the yaw movement is larger than the first degree, the control apparatus increases a first coupling torque of a first coupling device and a second coupling torque of a second coupling device to a predetermined first torque value which is larger than zero, and controls a ground contact load adjusting device in such a manner that a first ground contact load at a rear wheel at an outer side with respect to the yaw movement becomes larger than a second ground contact load at a rear wheel at an inner side with respect to the yaw movement by a predetermined first load difference or more.

A control apparatus for a four-wheel-drive vehicle is configured to, during braking of the vehicle in a two-wheel-drive state, determine whether or not a degree of a yaw movement for deflecting the vehicle is larger than a predetermined first degree. When the degree of the yaw movement is larger than the first degree, the control apparatus increases a first coupling torque of a first coupling device and a second coupling torque of a second coupling device to a predetermined first torque value which is larger than zero, and controls a ground contact load adjusting device in such a manner that a first ground contact load at a rear wheel at an outer side with respect to the yaw movement becomes larger than a second ground contact load at a rear wheel at an inner side with respect to the yaw movement by a predetermined first load difference or more.

A vehicle includes front suspension assemblies; rear suspension assemblies; a left driven wheel and a right driven wheel with first left and right brake assemblies; a left wheel and a right wheel with second left and right brake assemblies; an anti-lock braking system (ABS) module; a drive mode coupler connected between the transmission and the left and right wheels for changing between a 24 and a 44 drive configuration; and a drive mode switch for controlling the drive mode coupler, the ABS module selectively performing brake traction control of at least one wheel based on the position of the drive mode switch. A method for controlling traction of the vehicle includes sensing the drive mode switch position and when the drive mode changes from a 24 position to a 44 position, causing the ABS module to perform brake traction control on at least one wheel.

A vehicle includes front suspension assemblies; rear suspension assemblies; a left driven wheel and a right driven wheel with first left and right brake assemblies; a left wheel and a right wheel with second left and right brake assemblies; an anti-lock braking system (ABS) module; a drive mode coupler connected between the transmission and the left and right wheels for changing between a 24 and a 44 drive configuration; and a drive mode switch for controlling the drive mode coupler, the ABS module selectively performing brake traction control of at least one wheel based on the position of the drive mode switch. A method for controlling traction of the vehicle includes sensing the drive mode switch position and when the drive mode changes from a 24 position to a 44 position, causing the ABS module to perform brake traction control on at least one wheel.

This driving assist apparatus for a vehicle sets target wheel speed of an inside rear wheel in turning to substantially zero when a state of a center differential apparatus is a locked state in a case where the vehicle is turned in an extremely low speed traveling control. Further, the apparatus sets target wheel speed of each of wheels other than the inside rear wheel in turning such that a mean value of target wheel speeds of front wheels is equal to a mean value of target wheel speeds of rear wheels and the mean value of target wheel speeds of front wheels is equal to target vehicle body speed. Furthermore, the apparatus adjusts driving force and braking force such that wheel speed of each of the wheels becomes equal to the target wheel speed set for each of the wheels.