A traction control system for a trailing vehicle includes an electric machine, a ground engaging apparatus in contact with a ground surface, and a disconnect device connected between the electric machine and the ground engaging apparatus. The traction control system includes one or more speed sensors to determine a differential speed of the disconnect device. The traction control system includes a controller determines when to disengage the disconnect device based in part upon the speed of the ground engaging apparatus exceeding an upper threshold.

An all-wheel system for a motor vehicle, with a first electric machine for driving a first drive axle of the motor vehicle; a first electronic power unit for controlling a rotational speed of the first electric machine; a second electric machine for driving a second drive axle of the motor vehicle; a second electronic power unit for controlling the rotational speed of the second electric machine on the basis of the rotational speed of the first electric machine and a specified differential rotational speed between the first electric machine and the second electric machine.

An all-wheel system for a motor vehicle, with a first electric machine for driving a first drive axle of the motor vehicle; a first electronic power unit for controlling a rotational speed of the first electric machine; a second electric machine for driving a second drive axle of the motor vehicle; a second electronic power unit for controlling the rotational speed of the second electric machine on the basis of the rotational speed of the first electric machine and a specified differential rotational speed between the first electric machine and the second electric machine.

A hybrid vehicle includes an engine, a first motor generator, a first clutch, a second clutch, a second motor generator, a power storage device, and an electronic control unit configured to control the engine, the first motor generator, the second motor generator, the first clutch, and the second clutch. The electronic control unit is configured to engage the first clutch and disengage the second clutch such that the first motor generator generates power using power from the engine and the hybrid vehicle runs using power from the second motor generator, when a vehicle speed is equal to or lower than a predetermined vehicle speed.

The invention includes first and second motors, first and second differential mechanisms, and first to eighth decoupling mechanisms. The first and second motors transmit power to left and right wheels. First differential mechanisms distribute the power from the first and second motors. The first and second mechanisms are interposed between the first differential mechanism and the left front wheel and between the differential mechanism and the left rear wheel. The third and fourth decoupling mechanisms are interposed between the first motor and the first decoupling mechanism and between the first motor and the second decoupling mechanism. The fifth and sixth decoupling mechanisms are interposed between the second differential mechanism and the right front wheel and the right rear wheel, respectively. The seventh and eighth decoupling mechanisms are interposed between the second motor and the fifth decoupling mechanism and between the second motor and the sixth decoupling mechanism.

The invention includes first and second motors, first and second differential mechanisms, and first to eighth decoupling mechanisms. The first and second motors transmit power to left and right wheels. First differential mechanisms distribute the power from the first and second motors. The first and second mechanisms are interposed between the first differential mechanism and the left front wheel and between the differential mechanism and the left rear wheel. The third and fourth decoupling mechanisms are interposed between the first motor and the first decoupling mechanism and between the first motor and the second decoupling mechanism. The fifth and sixth decoupling mechanisms are interposed between the second differential mechanism and the right front wheel and the right rear wheel, respectively. The seventh and eighth decoupling mechanisms are interposed between the second motor and the fifth decoupling mechanism and between the second motor and the sixth decoupling mechanism.

A device for controlling an electronic four-wheel drive (E-4WD) of a vehicle includes: a first powertrain for a front wheel, where the first powertrain includes an engine, and a front wheel motor; and a second powertrain for a rear wheel, where the second powertrain includes a rear wheel motor. The device provides a rear wheel motor driving mode, a front wheel motor driving mode, a combined driving mode in which the front wheel motor and the rear wheel motor are both driven, and an engine-on mode according to driver power demand for the vehicle, such that fuel efficiency of the vehicle is improved.

A device for controlling an electronic four-wheel drive (E-4WD) of a vehicle includes: a first powertrain for a front wheel, where the first powertrain includes an engine, and a front wheel motor; and a second powertrain for a rear wheel, where the second powertrain includes a rear wheel motor. The device provides a rear wheel motor driving mode, a front wheel motor driving mode, a combined driving mode in which the front wheel motor and the rear wheel motor are both driven, and an engine-on mode according to driver power demand for the vehicle, such that fuel efficiency of the vehicle is improved.

A variable body vehicle may include a drive module having drive the vehicle wheels provided at a lower portion of the drive module; a body module coupled to an external side of the drive module and forming an internal space of the vehicle; and a battery-mounting portion formed in the drive module or the body module to mount a battery therein, providing electric power to the battery when the battery is mounted, and determining a driving mode of the vehicle by allowing the battery to be selectively mounted in the drive module, wherein a body of the vehicle is variable by a combination between the drive module and the body module according to a purpose of use.

Disclosed are a hybrid vehicle torque adjusting method and device. The method includes: acquiring a requested torque of a front-axle engine and a requested torque of a rear-axle motor, determining a first compensation torque according to the filtered requested torque of the front-axle engine and an actual output torque of a front-axle transmission, and determining a target torque of the rear-axle motor according to the first compensation torque and the requested torque of the rear-axle motor. In the method, since a difference exists between the filtered requested torque of the front-axle engine and the actual output torque of the front-axle transmission during shifting of the front-axle transmission, after the difference is compensated by the rear-axle motor, a working condition that affects a dynamic performance of an entire vehicle can be eliminated, torques can be coordinated, and the dynamic performance of the entire vehicle can be improved.