A hydraulic system for a vehicle in which the first and second brake valves are arranged in a parallel configuration. The pressure inlet of the first and second brake valves are connected to a source of hydraulic fluid and the exhaust outlets of the first and second brake valves are connected to the first and second brakes, respectively. The control inlets of the first and second brake valves are directly responsive to a braking signal from an operator of the vehicle. First and second control valves are configured to selectively provide hydraulic fluid to the control inlet of the first and second brake valves, respectively.

A vehicle includes front suspension assemblies; rear suspension assemblies; a left driven wheel and a right driven wheel with first left and right brake assemblies; a left wheel and a right wheel with second left and right brake assemblies; an anti-lock braking system (ABS) module; a drive mode coupler connected between the transmission and the left and right wheels for changing between a 24 and a 44 drive configuration; and a drive mode switch for controlling the drive mode coupler, the ABS module selectively performing brake traction control of at least one wheel based on the position of the drive mode switch. A method for controlling traction of the vehicle includes sensing the drive mode switch position and when the drive mode changes from a 24 position to a 44 position, causing the ABS module to perform brake traction control on at least one wheel.

An automatic brake assist device for an electric two-wheeled vehicle, applied to an electric two-wheeled vehicle, the electric two-wheeled vehicle comprising a main control module, comprising: a radar sensor module, used to measure a distance from a pair of objects; a control module, connected to the radar sensor module and the main control module, when the distance is changed from greater than a first braking distance to less than the first braking distance, transmitting a first brake braking mode signal to the main control module to decelerate the electric two-wheeled vehicle; when the distance is changed from greater than a second braking distance to less than the second braking distance, transmitting a second brake braking mode signal to the main control module to decelerate the electric two-wheeled vehicle; when the distance is changed from greater than a third braking distance to less than the third braking distance, greater than a third braking distance is changed to be less than the third braking distance, transmitting a third brake braking mode signal to the main control module to decelerate the electric two-wheeled vehicle.

A control device of a four-wheel drive vehicle that includes a central axle disposed between paired left and right control couplings and coupled to the paired control couplings and that is switched between a two-wheel drive state and a four-wheel drive state selects between provision and stop of a slip prevention control in which when at least one of the main drive wheel slips during running of the vehicle, a brake is automatically operated to the at least one slipping main drive wheel, and when the stop of the slip prevention control is selected and it is detected that the at least one main drive wheel has slipped in the four-wheel drive state, a rotation speed of the central axle is made lower than that at the time of detection of the slip of the at least one main drive wheel.

A vehicle gear-shifting control apparatus is equipped with an engine, a motor, an automatic transmission, a friction brake system, and a controller which executes, during deceleration of a vehicle during which the friction brake system is distributing a braking force to front and rear wheels, a regeneration control of imparting a regenerative braking torque to the rear wheels by causing the motor to perform a regeneration operation and a gear-shifting control of changing a shift stage of the automatic transmission by outputting a gear-shifting signal in accordance with the rotation speed of an input shaft to the automatic transmission. When the controller determines an oversteered state of the vehicle during the regeneration control, the controller increases an input torque of the input shaft so that the regenerative braking torque decreases while maintaining the regeneration operation of the motor and, at the same time, limits the gear-shifting control.

A vehicle is disclosed for providing increased friction between the wheels of a vehicle and the ground. An example vehicle includes an anti-lock brake system, inertial sensor, and wheels. The vehicle also includes a computing system configured to deploy aggregate to an area proximate the wheels, responsive to determining that a vehicle traction value is below a first threshold. The computing system is also configured to, after deploying the aggregate, deploy a friction mat to an area proximate the wheels, responsive to determining that the vehicle traction value remains below a second threshold.

A vehicle is disclosed for providing increased friction between the wheels of a vehicle and the ground. An example vehicle includes an anti-lock brake system, inertial sensor, and wheels. The vehicle also includes a computing system configured to deploy aggregate to an area proximate the wheels, responsive to determining that a vehicle traction value is below a first threshold. The computing system is also configured to, after deploying the aggregate, deploy a friction mat to an area proximate the wheels, responsive to determining that the vehicle traction value remains below a second threshold.

A hydraulic system for a vehicle in which the first and second brake valves are arranged in a parallel configuration. The pressure inlet of the first and second brake valves are connected to a source of hydraulic fluid and the exhaust outlets of the first and second brake valves are connected to the first and second brakes, respectively. The control inlets of the first and second brake valves are directly responsive to a braking signal from an operator of the vehicle. First and second control valves are configured to selectively provide hydraulic fluid to the control inlet of the first and second brake valves, respectively.

A braking system for vehicles has a pilot pump with a manual actuation device, which is fluidically connected to an absorber device which simulates the driving resistance offered by at least one braking device. The system has at least one control unit operatively connected to at least one sensor and to the manual actuator device and is programmed to actuate the braking device via the actuator device when it receives from the sensors a braking action request signal. The control unit is programmed so as to correct the braking action requested by the user, actuating the manual actuator device so as to avoid blocking of one or more wheels or the occurrence of instability of the vehicle during braking. The control unit is programmed to induce on the manual actuation device at least one vibration when it corrects the braking action requested by the user.

A dig system which allows for a vehicle to perform a dig maneuver, without sacrificing drivability. An actuator places the dig system in one of four different modes of operation, where the front wheels are placed in either a first configuration or a second configuration, where the front wheels are positioned at a desired steering angle, and one of the front or rear wheels is braked and prevented from rotating. The transfer case transfers power to one or more of the non-braked wheels, and disconnects from the remaining wheels. One or more of the non-braked wheels are rotated such that the vehicle pivots about an axis which extends through one of the wheels. One of the rear wheels is braked when performing a front dig maneuver, and one of the front wheels is be braked when performing a reverse dig maneuver.