A wheel-driven vehicle (1), comprising a front vehicle unit (1 A), a rear vehicle unit (1B), a power source (4), a first centre beam (8) and a second centre beam (9), a first driving means (10) and a second driving means (11) provided on each opposite sides of the first centre beam (8), a third driving means (13) and a fourth driving means (14), provided on opposite sides of the second centre beam (9), wherein the respective driving means (10, 11, 13, 14) comprises at least a driving wheel (16), a power-transmitting arrangement for transmission of power from said power source (4) to the driving wheel (16) that is included in each of the driving means (10, 11, 13, 14), wherein the power-transmitting arrangement comprises an engine (19) and a transmitting arrangement (20). The engine (19) is a hydraulic engine, the power-transmitting arrangement comprises separate hydraulic circuits (22, 23, 24, 25) for driving the hydraulic engine (19) of the respective driving means (10, 11, 13, 14), the power-transmitting arrangement comprises one or more pumps (26, 27, 28, 29) driven by the power source (4) for driving the respective hydraulic engine (19) as well as regulating means configured to individually regulate a power output on the respective hydraulic engine (19).

A wheel-driven vehicle (1), comprising a front vehicle unit (1 A), a rear vehicle unit (1B), a power source (4), a first centre beam (8) and a second centre beam (9), a first driving means (10) and a second driving means (11) provided on each opposite sides of the first centre beam (8), a third driving means (13) and a fourth driving means (14), provided on opposite sides of the second centre beam (9), wherein the respective driving means (10, 11, 13, 14) comprises at least a driving wheel (16), a power-transmitting arrangement for transmission of power from said power source (4) to the driving wheel (16) that is included in each of the driving means (10, 11, 13, 14), wherein the power-transmitting arrangement comprises an engine (19) and a transmitting arrangement (20). The engine (19) is a hydraulic engine, the power-transmitting arrangement comprises separate hydraulic circuits (22, 23, 24, 25) for driving the hydraulic engine (19) of the respective driving means (10, 11, 13, 14), the power-transmitting arrangement comprises one or more pumps (26, 27, 28, 29) driven by the power source (4) for driving the respective hydraulic engine (19) as well as regulating means configured to individually regulate a power output on the respective hydraulic engine (19).

A method for operating a clutch of a drive train of a vehicle wherein the clutch, a drive motor primary axis having first wheels that can be driven by the drive motor as first axis and a second axis having second wheels are driven by the drive motor via the clutch as second axis, with the clutch being adjusted between a closed position, wherein a first coupling torque of the clutch is set, and at least one second position differing from the closed position, wherein a second coupling torque of the clutch that is lower than the first coupling torque is set: determining at least one coefficient of friction of a roadway the vehicle is located on; and as a factor of the determined coefficient of friction: adjusting a basic torque of the clutch, with the clutch being prestressed in the second position by the basic torque.

A method for operating a clutch of a drive train of a vehicle wherein the clutch, a drive motor primary axis having first wheels that can be driven by the drive motor as first axis and a second axis having second wheels are driven by the drive motor via the clutch as second axis, with the clutch being adjusted between a closed position, wherein a first coupling torque of the clutch is set, and at least one second position differing from the closed position, wherein a second coupling torque of the clutch that is lower than the first coupling torque is set: determining at least one coefficient of friction of a roadway the vehicle is located on; and as a factor of the determined coefficient of friction: adjusting a basic torque of the clutch, with the clutch being prestressed in the second position by the basic torque.

The present disclosure relates to a controller for controlling operation of at least first and second traction machines in a vehicle. The controller includes a processor configured to predict an operating temperature of each of said at least first and second traction machines for at least a portion of a current route. The processor determines at least first and second torque requests for said at least first and second traction machines. The at least first and second torque requests are determined in dependence on the predicted operating temperatures of the at least first and second traction machines. The processor generates at least first and second traction motor control signals in dependence on the determined at least first and second torque requests. The present disclosure also relates to method of controlling at least first and second traction machines in a vehicle.

The present disclosure relates to a controller for controlling operation of at least first and second traction machines in a vehicle. The controller includes a processor configured to predict an operating temperature of each of said at least first and second traction machines for at least a portion of a current route. The processor determines at least first and second torque requests for said at least first and second traction machines. The at least first and second torque requests are determined in dependence on the predicted operating temperatures of the at least first and second traction machines. The processor generates at least first and second traction motor control signals in dependence on the determined at least first and second torque requests. The present disclosure also relates to method of controlling at least first and second traction machines in a vehicle.

An electric vehicle is comprised of a first driveline equipped with a first electric drive axle assembly having a first electric drive module configured to drive a pair of first wheels, a second driveline equipped with a second electric drive axle assembly having a second electric drive module configured to drive a pair of second wheels and a vehicle control system controlling coordinated operation of the first and second electric drive modules to generate tractive drive torque transmitted to the wheels and provide low-radius turning functionality.

An electric vehicle is comprised of a first driveline equipped with a first electric drive axle assembly having a first electric drive module configured to drive a pair of first wheels, a second driveline equipped with a second electric drive axle assembly having a second electric drive module configured to drive a pair of second wheels and a vehicle control system controlling coordinated operation of the first and second electric drive modules to generate tractive drive torque transmitted to the wheels and provide low-radius turning functionality.

Methods and systems are provided for operating a vehicle that may be propelled via a primary axle and a secondary axle. In one example, a propulsion source of a secondary axle may be decoupled from at least one wheel via a dog clutch that includes teeth. The dog clutch may be disengaged in a way that reduces driveline noise and may reduce a possibility of driveline degradation.

Methods and systems are provided for operating a vehicle that may be propelled via a primary axle and a secondary axle. In one example, a propulsion source of a secondary axle may be decoupled from at least one wheel via a dog clutch that includes teeth. The dog clutch may be disengaged in a way that reduces driveline noise and may reduce a possibility of driveline degradation.