In one example, a hybrid drive unit comprises an electric motor, an axle differential for connection with a further motor, a first axle half shaft and a second axle half shaft connected to the axle differential, a first clutching device and a second clutching device. The electric motor is selectively drivingly engagable with the first axle half shaft via the first clutching device and with the second axle half shaft via the second clutching device.

A vehicle control system may be provided for controlling adhesion of wheels to a route surface. The control system includes one or more processors configured to determine adhesion values representative of adhesion between the wheels of a vehicle and the route surface based on angular speeds of the wheels. An artificial intelligence neural network may generate a target slip value for the wheels that are coupled with at least two different axles of the vehicle by processing the adhesion values and modifying the target slip value to increase an average value of the adhesion values of the wheels. The one or more processors may control a torque applied to at least one of the axles based on the target slip value.

A yaw stability control system is provided for a motor vehicle. The system includes one or more cameras, a plurality of wheel speed sensors, a yaw angle sensor, and a steering angle sensor. The system further includes an electric motor connected to a reaction wheel. The system further includes a processor and a memory including instructions such that the processor is programmed to: determine a desired yaw angle of the motor vehicle based on a video signal, speed signals, a yaw signal, and a steering signal. The processor is further programmed to generate an actuation signal associated with the desired yaw angle. The electric motor angularly rotates the reaction wheel at a predetermined angular rate in a predetermined rotational direction to produce a counter-acting torque that rotates the motor vehicle to the desired yaw angle, in response to the electric motor receiving the actuation signal from the processor.

A method for determining running resistance of a vehicle includes receiving, by a controller, a rotation speed of a driving source of the vehicle and an inclination angle of a road on which the vehicle runs; determining a torque of the driving source according to the rotation speed of the driving source and determining the inclination angle of the road according to the torque of the driving source; determining whether the inclination angle exceeds the inclination angle of the road; determining that there is no object towed by the vehicle, and determining the running resistance of the vehicle based on the inclination angle according to the torque of the driving source, when the inclination angle is less than or equal to the inclination angle of the road; and controlling the driving source or a transmission of the vehicle based on the determined running resistance of the vehicle.

A drive force control apparatus includes a drive force control section that has a steady drive force, a filtered drive force obtained by performing a filtering process on the steady drive force, and an internal drive force, which is calculated from a traction requested drive force, input thereto, and sets a target drive force based on the steady drive force, the filtered drive force, and the internal drive force. The drive force control section implements post-operation processing after control for causing the internal drive force to be the target drive force ends. In the post-operation processing, a new internal drive force, which is calculated based on a large-small relationship among the steady drive force, the filtered drive force, and the previously calculated internal drive force, is set as the target drive force.

Systems and methods are provided for generating data indicative of a friction associated with a driving surface, and for using the friction data in association with one or more vehicles. In one example, a computing system can detect a stop associated with a vehicle and initiate a steering action of the vehicle during the stop. The steering action is associated with movement of at least one tire of the vehicle relative to a driving surface. The computing system can obtain operational data associated with the steering action during the stop of the vehicle. The computing system can determine a friction associated with the driving surface based at least in part on the operational data associated with the steering action. The computing system can generate data indicative of the friction associated with the driving surface.

A sensorless clutch state feedback method is provided including a driveline disconnect. To engage the sensorless disconnect, respective speeds of a motor assembly and the sensorless disconnect are synchronized to within a speed delta threshold of each other, a control system facilitates the engagement of the motor assembly and the sensorless disconnect, and the control system determines the success of the engagement by the motor speed response of the motor assembly (e.g., whether the presence of a load is detected).

A controller may be configured to receive one or more measured rotational speeds of a wheel of a vehicle. The controller may be configured to determine whether the one or more measured rotational speeds are unreliable relative to one or more previous rotational speeds of the wheel of the vehicle. The controller may be configured to calculate a replacement rotational speed of the wheel and use the replacement rotational speed of the wheel to control or restrict movement of the vehicle using or based on the replacement rotational speed in place of the one or more measured rotational speeds.

The controller is programmed to perform first control that controls a driving force distributor such as to decrease a distribution rate upon satisfaction of a predetermined condition that a frequency of at least one rotation fluctuation of an output member of the drive system, a main drive wheel and a sub drive wheel is within a predetermined area, compared with the distribution rate upon non-satisfaction of the predetermined condition.

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.