The present disclosure provides a method of controlling braking of an electric vehicle in which friction braking force generated by a friction braking unit is applied to front wheels and regenerative braking force generated by a motor is applied to rear wheels includes: determining driver's request braking force by a controller based on a driver's braking-input value; detecting driving information and state information of the vehicle by a detection unit; and determining a braking mode of the vehicle that satisfies the driver's request braking force by the controller based on the detected information and information of running state of the vehicle obtained from the detected information. In addition, the present disclosure provides a system of controlling braking of an electric vehicle.

A method of controlling driving force of a vehicle includes estimating a first maximum road surface frictional coefficient based on a driving stiffness defined by a micro slip ratio and driving force of drive wheels, in a first driving state where the vehicle travels straight at a constant acceleration, estimating a second maximum road surface frictional coefficient based on a steering reaction force detected by an electric power steering device, in a second driving state different from the first state and where the vehicle is steered, estimating a third maximum road surface frictional coefficient to be a given value in a third driving state different from the first and second states and where an outdoor air temperature is above a determination temperature, and controlling the driving force to settle within a friction circle defined by each of the highest frictional coefficients and a ground contact load of the drive wheels.

An apparatus for improving ride comfort of a vehicle includes: a sensing unit to sense whether an obstacle is present in a traveling direction of the vehicle and a quantity of behavior of the vehicle; a control value calculation unit to calculate control values for controlling the vehicle in a vertical direction and a pitch direction based on information sensed by the sensing unit; and a driving controller to control at least one of front wheels or rear wheels of the vehicle based on the calculated vertical-direction control values and pitch-direction control values. In particular, each of the vertical-direction control value and the pitch-direction control value includes a control value related to driving and braking the vehicle.

A four-wheel-drive vehicle including a powertrain operable to adjust a front- and rear-wheel driving force ratio that is a ratio between a driving force of front wheels and a driving force of rear wheels includes a control device that controls the powertrain and adjusts the front- and rear-wheel driving force ratio so as to reduce the driving force of the front wheels that are steered wheels, when it is detected that emergency avoidance to avoid collision with an avoidance target ahead in a traveling direction is necessary.

A vehicle control apparatus includes a steering device, a steering controller, a steering input member, a front-rear driving force distribution unit, and a behavior controller. The steering device steers front wheels of a vehicle. The steering controller controls and causes the steering device to perform steering automatically. The steering input member receives a steering operation inputted by a driver. The front-rear driving force distribution unit changes a front-rear driving force distribution ratio. The behavior controller predicts, if a steering operation is performed via the steering input member during the automatic steering, a behavior of the vehicle to be exhibited after steering corresponding to the steering operation, and causes, if an oversteer behavior is predicted to occur, the front-rear driving force distribution unit to change the driving force distribution ratio to a front-wheel biased distribution ratio as compared with a case where the oversteer behavior is not predicted to occur.

A drive force control system for a vehicle configured to allow a driver to find out a steering angle at which a wheel grips a road surface. In the vehicle, a torque distribution ratio to a pair of wheels turned by a steering wheel and another pair of wheels is changeable. A controller restricts a control to change the torque distribution ratio in the event of a slip of the pair of wheels, if a steering angle of the pair of wheels is changed to allow the pair of wheels to grip a road surface.

A through the road (TTR) hybridization strategy is proposed to facilitate introduction of hybrid electric vehicle technology in a significant portion of current and expected trucking fleets. In some cases, the technologies can be retrofitted onto an existing vehicle (e.g., a truck, a tractor unit, a trailer, a tractor-trailer configuration, at a tandem, etc.). In some cases, the technologies can be built into new vehicles. In some cases, one vehicle may be built or retrofitted to operate in tandem with another and provide the hybridization benefits contemplated herein. By supplementing motive forces delivered through a primary drivetrain and fuel-fed engine with supplemental torque delivered at one or more electrically-powered drive axles, improvements in overall fuel efficiency and performance may be delivered, typically without significant redesign of existing components and systems that have been proven in the trucking industry.

Some embodiments of the present invention provide a control system configured to control a driveline of a motor vehicle to operate in a selected one of a plurality of configurations, the control system being configured to receive an environment indication signal indicative of an environment surrounding the vehicle, the control system being configured to determine, based on the environment indication signal, whether there is a need to pre-emptively brake the vehicle before brake torque is demanded of a braking system of the vehicle and the control system being configured, when it is determined that there is a need to pre-emptively brake the vehicle, to cause the driveline to operate in a second configuration and not a first configuration, wherein in the first configuration a first group of one or more wheels are arranged to be driven by the driveline and in the second configuration the first group of one or more wheels and in addition a second group of one or more wheels are arranged to be driven by the driveline.

A controller (104) for controlling torque generated by at least one traction motor (116a, 116b) of a vehicle (100) before a vehicle launch, comprising: means to determine that torque demand increases while simultaneously at least one brake (111) of the vehicle is in an applied state; means to, in dependence on the determination, limit torque generation by the traction motor in response to torque demand; and means to remove the limit in dependence on release of the at least one brake.

Provided is a vehicle turning control device which prevents a target yaw rate from being unstable, even if a control gain is changed in accordance with the magnitude of a yaw rate deviation or a road surface frictional coefficient. This vehicle turning control device includes a target yaw rate correction (32). The correction (32) calculates a target yaw rate with respect to the control gain determined based on a vehicle traveling information, using at least one of a plurality of calculated target yaw rates. The control gain is determined such that, as a road surface frictional coefficient decreases or as a yaw rate deviation increases, a yaw response characteristic approaches a basic yaw response characteristic from an initial yaw response characteristic.