Brake fluid inside a first wheel cylinder is pressurized by using a first pressure-regulating mechanism and brake fluid inside a second wheel cylinder is pressurized by using a second pressure-regulating mechanism. If a determination means determines that the first pressure-regulating mechanism action is in an unsuitable state and the second pressure-regulating mechanism action is in a suitable state, the control means pressurizes the brake fluid inside the first wheel cylinder by using a master cylinder and pressurizes the brake fluid inside the second wheel cylinder by using the second pressure-regulating mechanism, when an operation volume is less than a value. When the operation volume has reached the value, the control means pressurizes the brake fluid inside the first and second wheel cylinders by using the second pressure-regulating mechanism.

An electronically controllable pneumatic brake system includes a brake circuit, wherein a control valve is associated with the brake circuit for the purpose of adjusting braking pressures at service brakes independently of each other, wherein the control valve comprises an electronic control input for receiving an electrical control signal and a pneumatic control input for receiving a control pressure. The pneumatic brake system additionally includes a first control unit for outputting the electronic control signal depending on a target vehicle deceleration for the electrical actuation of the control valve, a first brake valve configured to specify a first brake valve control pressure, and a second brake valve configured to output a second brake valve control pressure. The second brake valve is disposed such that the first brake valve control pressure and/or the second brake valve control pressure is output as the control pressure to the control valve.

The present disclosure includes a system, method, and device related to controlling brakes of a towed vehicle. A brake controller system includes a brake controller that controls the brakes of a towed vehicle based on acceleration. The brake controller is in communication with a speed sensor. The speed sensor determines the speed of a towing vehicle or a towed vehicle. The brake controller automatically sets a gain or boost based on the speed and acceleration.

A brake system includes a piston configured to generate hydraulic pressure of brake fluid stored in a brake system, and an electronic control unit (ECU) configured to calculate hydraulic pressure to be generated in response to an amount of movement of the piston. The ECU estimates a current temperature of the brake fluid, calculates a maximum estimated hydraulic pressure of the piston based on the estimated current temperature, and determines a maximum hydraulic-pressure reference value for backward movement control of the piston based on the maximum estimated hydraulic pressure.

A brake system includes a piston configured to generate hydraulic pressure of brake fluid stored in a brake system, and an electronic control unit (ECU) configured to calculate hydraulic pressure to be generated in response to an amount of movement of the piston. The ECU estimates a current temperature of the brake fluid, calculates a maximum estimated hydraulic pressure of the piston based on the estimated current temperature, and determines a maximum hydraulic-pressure reference value for backward movement control of the piston based on the maximum estimated hydraulic pressure.

The present disclosure concerns an assembly (100) for an electromechanical brake booster (200) of a vehicle braking system (1000). The assembly (100) comprises a housing (160) which has a longitudinal axis (L) and can be loaded with an electromechanically generated actuating force, and an output element (150) which extends away from the housing (160) and is configured for transmitting the actuating force to a brake cylinder (300) of the vehicle braking system (1000). The assembly (100) furthermore comprises an elastic element (190) which is supported on the housing (160) and configured to move the housing (160) away from the brake cylinder (300) into a starting position, and a guide (180) which is arranged on the housing (160) for the output element (150) and is configured to guide an angular deflection of the output element (150) with respect to the longitudinal axis (L) of the housing (160).

The present disclosure concerns an assembly (100) for an electromechanical brake booster (200) of a vehicle braking system (1000). The assembly (100) comprises a housing (160) which has a longitudinal axis (L) and can be loaded with an electromechanically generated actuating force, and an output element (150) which extends away from the housing (160) and is configured for transmitting the actuating force to a brake cylinder (300) of the vehicle braking system (1000). The assembly (100) furthermore comprises an elastic element (190) which is supported on the housing (160) and configured to move the housing (160) away from the brake cylinder (300) into a starting position, and a guide (180) which is arranged on the housing (160) for the output element (150) and is configured to guide an angular deflection of the output element (150) with respect to the longitudinal axis (L) of the housing (160).

This application provides a brake-by-wire system and a control method. This application is applicable to an intelligent vehicle, a new energy vehicle, a conventional vehicle, or the like. The braking control system includes: a brake master cylinder, a first pressure booster, a second pressure booster, at least one second control valve, at least one third control valve, at least one fourth control valve, and a second pedal feel simulation system. When a master brake system fails, a redundant brake system can independently control each brake wheel cylinder, to implement function backup for a master brake system, meeting requirements for braking functions such as ABS/AEB/ESC/TCS of a vehicle. The redundant brake system can further improve safety of the brake system and ensure pedal experience of a driver, thereby bringing more stable and comfortable driving experience to the driver.

An object of the present invention is to provide a brake control apparatus including a backup brake, which brake control apparatus makes it possible both to ensure deceleration, and to attain vehicle running stability. The present invention includes: a front-wheel-side braking mechanism 4 that includes a front-wheel-side electric hydraulic mechanism 6, and a hydraulic circuit system, and applies braking force to front wheels 2L, and 2R; a rear-wheel-side braking mechanism 5 that applies braking on a rear wheel side; a backup brake that is actuated in accordance with a switch to the hydraulic circuit system 15 when the front-wheel-side electric hydraulic mechanism 6 fails, and applies braking force to the front wheels 2R, and 2L; and a skid determination threshold setting section 43 that sets a skid determination threshold. When the backup brake is actuated, the skid determination threshold setting section 43 sets the skid determination threshold for the rear wheels 3L, and 3R on the basis of braking force information of the backup brake.

An object of the present invention is to provide a brake control apparatus including a backup brake, which brake control apparatus makes it possible both to ensure deceleration, and to attain vehicle running stability. The present invention includes: a front-wheel-side braking mechanism 4 that includes a front-wheel-side electric hydraulic mechanism 6, and a hydraulic circuit system, and applies braking force to front wheels 2L, and 2R; a rear-wheel-side braking mechanism 5 that applies braking on a rear wheel side; a backup brake that is actuated in accordance with a switch to the hydraulic circuit system 15 when the front-wheel-side electric hydraulic mechanism 6 fails, and applies braking force to the front wheels 2R, and 2L; and a skid determination threshold setting section 43 that sets a skid determination threshold. When the backup brake is actuated, the skid determination threshold setting section 43 sets the skid determination threshold for the rear wheels 3L, and 3R on the basis of braking force information of the backup brake.