Methods and systems for a vehicle transmission are provided herein. The vehicle transmission includes an input interface configured to mechanically couple to a motive power source. The vehicle transmission further includes a first disconnect device releasably mechanically coupling a first output to a first drive axle and a second disconnect device releasably mechanically coupling a second output to a second drive axle.

A system and method for controlling switching of an electric vehicle to four-wheel drive are provided. The system includes a first motor connected to main drive wheels and configured to output a first torque, a second motor connected to subsidiary drive wheels and configured to output a second torque, a disconnector mounted on an axle shaft for the subsidiary drive wheels, a driver requested torque detector configured to detect a driver requested torque, and a controller configured to release a set output limit of the first motor for a designated time and simultaneously release a set output limit of the second motor when the driver requested torque is greater than or equal to a reference requested torque, and control the first motor to output a maximum torque exceeding the set output limit to the main drive wheels until the disconnector is engaged.

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.

A wheel hub clutch includes: a notch plate; a pocket plate having pockets and plunger passages in communication with the pockets; locking members carried in the pocket plate pockets; and plungers carried in the pocket plate plunger passages and configured to drive the locking members into engagement with the notches in the notch plate. The clutch also may include a translator with a permanent magnet that cooperates with an electromagnet of a stator to translate the translator. The translator may be coupled to the locking members to translate them into and out of engagement with the notch plate. Also disclosed is a wheel end system including the wheel hub clutch, a drivetrain including the wheel end system and wheel hub clutch, and a vehicle including the drivetrain.

An electric drive assembly has a first wheel drive assembly and a second wheel drive assembly. The first wheel drive assembly includes a first motor, a first gear reduction mechanism, and a first disengaging mechanism. When the first disengaging mechanism is switched to an engagement position of the first disengaging mechanism, power of the first motor is transmitted to a first wheel through the first gear reduction mechanism. The second wheel drive assembly includes a second motor, a second gear reduction mechanism, and a second disengaging mechanism. When the second disengaging mechanism is switched to an engagement position of the second disengaging mechanism, power of the second motor is transmitted to a second wheel through the second gear reduction mechanism. When the first disengaging mechanism or the second disengaging mechanism is switched to a disengagement position, the power of the motors to the corresponding wheels is interrupted.

An electric drive assembly has a first wheel drive assembly and a second wheel drive assembly. The first wheel drive assembly includes a first motor, a first gear reduction mechanism, and a first disengaging mechanism. When the first disengaging mechanism is switched to an engagement position of the first disengaging mechanism, power of the first motor is transmitted to a first wheel through the first gear reduction mechanism. The second wheel drive assembly includes a second motor, a second gear reduction mechanism, and a second disengaging mechanism. When the second disengaging mechanism is switched to an engagement position of the second disengaging mechanism, power of the second motor is transmitted to a second wheel through the second gear reduction mechanism. When the first disengaging mechanism or the second disengaging mechanism is switched to a disengagement position, the power of the motors to the corresponding wheels is interrupted.

A vehicle control device includes a controller configured to control operation of a driving motor that is to output a driving force for a vehicle. The controller is switchable between a normal mode of controlling acceleration/deceleration based on a driver's acceleration/deceleration operation, and a cruise control mode of maintaining the vehicle speed at a target speed without the acceleration/deceleration operation. The controller is configured to, during the cruise control mode, calculate a torque command value for the motor by using integral control based on an integrated value of a deviation between the vehicle speed and the target speed, and execute an integrated-value adjustment process if the controller determines that the vehicle entered a flat road or an uphill road from a downhill road or a downhill road from a flat road or an uphill road. The process adjusts the integrated value to reduce an absolute value of the integrated value.

An improved twin clutch, two-speed disconnect secondary drive unit, which may be configured as a rear drive unit (RDU) for an all wheel drive vehicle is provided. The RDU is driven through an input shaft, which is connected to a vehicle drive source such as a motor, and includes a twin clutch assembly, which is connected to the drive shaft and is selectively actuated to drive left and right main shafts, which drive respective wheels of the vehicle. The RDU further includes a modular a shift assembly mountable to one or both of said main shafts to drive output shafts, wherein each shift assembly is selectively operable between the hi-range and lo-range modes to shift driving operation of the output shafts between hi-speed and lo-speed operation. The shift assembly may be controlled by improved mono-stable or bi-stable actuators.

An improved twin clutch, two-speed disconnect secondary drive unit, which may be configured as a rear drive unit (RDU) for an all wheel drive vehicle is provided. The RDU is driven through an input shaft, which is connected to a vehicle drive source such as a motor, and includes a twin clutch assembly, which is connected to the drive shaft and is selectively actuated to drive left and right main shafts, which drive respective wheels of the vehicle. The RDU further includes a modular a shift assembly mountable to one or both of said main shafts to drive output shafts, wherein each shift assembly is selectively operable between the hi-range and lo-range modes to shift driving operation of the output shafts between hi-speed and lo-speed operation. The shift assembly may be controlled by improved mono-stable or bi-stable actuators.

An installation arrangement is provided for a vehicle having a front motor for driving a front wheel, a rear motor for driving a rear wheel, a high-voltage battery that stores electrical power for the motors, and a low-voltage battery that stores electrical power for various units. The installation arrangement is configured such that an intersection of a longitudinal center line and a lateral center line of the vehicle overlaps the high-voltage battery as seen in a plan view. In the front section of the vehicle, the front motor is arranged on one side of the longitudinal center line, and the internal combustion engine is arranged on the other side of the longitudinal center line. In the rear section of the vehicle, the low-voltage battery is arranged on one side of the longitudinal center line, and the rear motor is arranged on the other side of the longitudinal center line.