Brake adjustment dials, systems, and components adjust the brake bias in a vehicle. In one example, a brake bias adjustment dial includes an electronic display, an adjustment mechanism that transfers rotational torque to a shaft, and a rotation prevention feature that compensates the rotation of the adjustment mechanism to maintain the image displayed on the electronic display in a substantially fixed orientation with respect to a mounting.

Brake adjustment dials, systems, and components adjust the brake bias in a vehicle. In one example, a brake bias adjustment dial includes an electronic display, an adjustment mechanism that transfers rotational torque to a shaft, and a rotation prevention feature that compensates the rotation of the adjustment mechanism to maintain the image displayed on the electronic display in a substantially fixed orientation with respect to a mounting.

A brake system for selectively actuating at least one of a pair of front wheel brakes and a pair of rear wheel brakes includes a reservoir and a power transmission unit configured for selectively providing pressurized hydraulic fluid for actuating at least a selected one of the wheel brakes during a braking event. The power transmission unit includes an electric motor for selectively actuating a fluid pressurization cycle. The electric motor is a dual-wound electric motor having first and second windings. A first electronic control unit is provided for selectively controlling the first windings of the electric motor of the power transmission unit. A second electronic control unit is provided for selectively controlling the second windings of the electric motor of the power transmission unit. An isolation valve and a dump valve are associated with each wheel brake.

A brake system for selectively actuating at least one of a pair of front wheel brakes and a pair of rear wheel brakes of a vehicle, one of which is hydraulically actuated and the other of which is electrically actuated, includes a reservoir. First and second integrated control units are in fluid communication with the reservoir and respective ones of the hydraulically actuated wheel brakes. The first and second integrated control units have first and second power transmission units connected to first and second electronic control unit, respectively. Each electronic control unit is configured to control a corresponding power transmission unit and a selected one of the electrically actuated wheel brakes on a contralateral side of the vehicle from the selected one of the hydraulically actuated wheel brakes which is actuated by the power transmission unit.

A braking apparatus of a vehicle including: a brake pedal position detector configured to detect a position of a brake pedal; a piston displacement detector configured to detect a displacement of a piston installed in a main master cylinder; a rear wheel circuit pressure detector configured to detect pressure supplied to a rear wheel circuit; a front wheel circuit pressure detector configured to detect pressure supplied to a front wheel circuit; a motor driver configured to drive a motor to move the piston; and a controller configured to receive the position of the brake pedal, the displacement of the piston, rear wheel circuit pressure and front wheel circuit pressure, determine a fail of a circuit isolation valve, and perform fail safe driving by operating the motor driver and a normal operating valve to supply pressure to only one of the rear wheel circuit and the front wheel circuit.

In a method for controlling a hydraulic brake system in a vehicle, wherein the hydraulic brake system is equipped with a hydraulic pump, the hydraulic pump is activated to hold the vehicle at rest and brake fluid is conveyed via open inlet valves to the wheel braking device of a first vehicle axle. The inlet valves on wheel braking devices of a second vehicle axle are at least partially open in response to a change in the brake pressure requirement in the brake system, and at the same time the outlet valves on said wheel braking devices remain closed while the vehicle is being held at rest.

In a method for controlling a hydraulic brake system in a vehicle, wherein the hydraulic brake system is equipped with a hydraulic pump, the hydraulic pump is activated to hold the vehicle at rest and brake fluid is conveyed via open inlet valves to the wheel braking device of a first vehicle axle. The inlet valves on wheel braking devices of a second vehicle axle are at least partially open in response to a change in the brake pressure requirement in the brake system, and at the same time the outlet valves on said wheel braking devices remain closed while the vehicle is being held at rest.

The present invention obtains a controller and a control method capable of improving a rider's perceptibility of a warning.

A controller (51) for a rider-assistance system (50) mounted to a straddle-type vehicle (100) includes: a determination section that determines necessity of the warning given to the rider; a haptic motion performing section that performs haptic motion at least once to reduce or increase acceleration/deceleration of the straddle-type vehicle (100) only for a moment; and an acquisition section that acquires travel state information of the straddle-type vehicle (100). The haptic motion performing section changes a priority of each wheel (3, 4) at the time of changing a braking force to reduce or increase the acceleration/deceleration only for the moment in the haptic motion according to the travel state information acquired by the acquisition section.

A method of controlling braking of a vehicle is provided. When a disconnector is disconnected and an auxiliary drive wheel is separated from a driving system, vehicle braking is performed with regenerative braking by a primary drive wheel motor during braking. Subsequently, the disconnector is connected based on a vehicle stability state, and then, braking is performed simultaneously on the auxiliary drive wheel and a primary drive wheel.

A main ECU controls a braking force by driving an electric motor of a brake mechanism based on a value detected by a thrust force sensor provided to the brake mechanism. The main ECU calibrates (corrects) the value detected by the thrust force sensor based on a driving force acquired when, while a driving force is applied to left and right front wheels serving as driving wheels with the braking force applied to a rear right wheel or a rear left wheel by the brake mechanism, this driving force exceeds the braking force.