An apparatus for generating non-electric control signals for a brake system, which has a first supply source, including: at least one interface configured to be connected to a pressure accumulator; and at least one interface to output the control signals; in which the apparatus is configured to be supplied via a second supply source. Also described are a related module and an electronic brake system.

An aircraft brake control system accommodates desired yaw for steering, while substantially eliminating undesired yaw. The system assesses brake command signals from the pilot, signals corresponding to aircraft parameters, and signals based on brake control parameters, and determines therefrom an amount of yaw desired by the pilot. The instantaneous yaw rate is monitored and compared to the desired yaw rate. An error signal corresponding to the difference between instantaneous and actual yaw rates is calculated and that error signal is employed to modify a braking differential between right and left brakes to eliminate or substantially reduce the undesired yaw.

A vehicle braking device includes: a first hydraulic pressure output unit that is connected to a master chamber through a first liquid passage and outputs hydraulic pressure to first wheel cylinders based on a hydraulic pressure of the first liquid passage; a hydraulic pressure generating unit that generates hydraulic pressure independently of a master cylinder; a second hydraulic pressure output unit that is connected to the hydraulic pressure generating unit through a second liquid passage and outputs hydraulic pressure to second wheel cylinders based on a hydraulic pressure of the second liquid passage; a normally closed communication control valve that is provided in a communication passage connecting the first liquid passage and the second liquid passage and opens and closes the communication passage; and a normally open master cut valve in the first liquid passage on the master cylinder side relative to a connection portion with the communication passage.

A commercial vehicle with at least one driven axle, at least one service brake, at least one propulsion engine, and wheels characterized in that the parking brake function of the vehicle is solved by a bistable locking means acting on both wheels. At least one multi-speed gearbox is provided to concurrently activate a first gear stage and a second gear stage having different ratios.

A hydraulic arrangement for a brake system is disclosed. The hydraulic arrangement comprises a pressure-providing device, a reservoir for storing a pressure medium and a bleed line. The pressure-providing device has at least one pressure chamber which can be connected to a brake circuit. The reservoir has a first partial reservoir, which can be connected via a first reservoir line to a first pressure chamber of a piston-cylinder arrangement. The first pressure chamber of the piston-cylinder arrangement is delimited by a piston, which can be adjusted by an actuating device. The bleed line connects a bleed outlet of the pressure-providing device to the first reservoir line. A diagnostic method and brake system are also disclosed.

A hydraulic brake wear detection apparatus and a method for detecting a degree of pad wear of a brake pad of a hydraulic brake includes a caliper piston located at least partially within a caliper cavity and attached to the brake pad. The caliper piston includes a piston cavity extending from a caliper piston rim into a caliper piston body at a location longitudinally opposite, and spaced from, the brake pad. An internal piston is located at least partially within the piston cavity and is entirely enclosed in an internal space defined cooperatively by the piston cavity and the caliper cavity for reciprocal longitudinal motion with respect to the internal space. The internal piston is reciprocated by a predetermined volume of pressurized hydraulic fluid responsive to wear of the brake pad.

A brake mode control system and a brake mode control method for a vehicle are disclosed. The brake mode control system comprises a user interface, a driving information sensor, a braking controller, and a brake mode control panel. The user interface is configured to receive a brake mode input by a driver, the driving information sensor is configured to sense driving information of the vehicle, the braking controller is configured to determine a driving state of the vehicle based on the driving information of the vehicle sensed by the driving information sensor and selectively change the brake mode received by the user interface according to the determined driving state of the vehicle to achieve a final brake mode, and the brake mode control panel is configured to generate a different braking feel according to a pedal action force required for a pedal stroke based on the final brake mode.

[Problem] The present invention provides a vehicle brake system capable of shortening a delay time from time at which an execution request of a pre-crash brake executed by actuation of an electric booster is sent to time at which the pre-crash brake is actually actuated.

[Means for Resolution] In a vehicle brake system (1) including: a hydraulic unit (20); a braking control section (90) for controlling the hydraulic unit (20); a master cylinder (14); an electric booster (10); a booster control section (100) for controlling the electric booster (10); and a pre-crash brake execution determination section (110), the pre-crash brake execution determination section (110) sends information on a specified target value (P_tgt) for decelerating a vehicle to the booster control section (100) and the braking control section (90). When a change amount (ΔP) of the target value (P_tgt) received from the pre-crash brake execution determination section (110) exceeds a specified threshold value (ΔP_thr), the booster control section (100) drives the electric booster (10) prior to a command from the braking control section (90) and executes preceding brake control for generating a specified brake hydraulic pressure to a wheel cylinder.

An electronic brake system includes: a reservoir in which a pressurized medium is stored; a hydraulic pressure supply device comprising a first pressure chamber provided in front of a hydraulic piston and a second pressure chamber provided at a rear of the hydraulic piston, and configured to generate a hydraulic pressure by moving the hydraulic piston forward or backward; a hydraulic control unit configured to control a flow of the hydraulic pressure transferred to a wheel cylinder from the hydraulic pressure supply device; and a controller configured to control the hydraulic pressure supply device and the hydraulic control unit, wherein the hydraulic pressure supply device comprises a motor having a plurality of separate system windings for moving the hydraulic piston, and a control valve configured to open and close a flow path that communicates the first pressure chamber and the second pressure chamber, and when a portion of the plurality of separate system windings of the motor fails, the controller is configured to open the control valve to push the hydraulic piston so that a portion of a hydraulic pressure discharged from a pressure chamber is transferred to another pressure chamber.

A pneumatic brake pedal module for a “brake-by-wire” brake system of a vehicle is disclosed. The brake pedal module has a pivotably mounted brake pedal and having a damping unit, which is mechanically coupled to the brake pedal to generate a resistance when the brake pedal is actuated, such that the damping unit is subjected to tension when the brake pedal is actuated.