A braking system for a vehicle may include a hydraulic brake pedal system having a master cylinder having at least one pressure chamber, from which a hydraulic output is coupled to at least one brake circuit via an infeed switch valve. The master cylinder is coupled to a reservoir via at least one opening via a hydraulic connection. A failure of a pressure chamber seal of the at least one pressure chamber of the master cylinder is safeguarded by at least one redundancy, and the failure of the pressure chamber seal or the redundancy of the pressure chamber seal of the at least one pressure chamber of the master cylinder can be diagnosed.

A brake system for a vehicle is provided, the brake system including: a main control unit configured to control main braking in response to a pedal signal, control parking braking in response to an EPB signal, and control a plurality of hydraulic brake units disposed at a front wheel unit of the vehicle; a first rear wheel unit configured to receive the pedal signal using a first control unit and control a first rear wheel; a second rear wheel unit configured to receive the EPB signal using a second control unit and control a second rear wheel; and a communication network configured to transmit and receive a braking signal between the main control unit, the first rear wheel unit and the second rear wheel unit.

A vehicle is a vehicle on which an ADK is mountable. The vehicle includes: a VP that controls the vehicle in accordance with an instruction from the ADK; and a VCIB that serves as an interface between the ADK and the VP. The VP outputs a brake pedal position signal in accordance with an amount of depression of a brake pedal by a driver, and outputs a brake pedal intervention signal, to the ADK through the VCIB. The brake pedal intervention signal indicates that the brake pedal is depressed, when the brake pedal position signal indicates that the amount of depression is larger than a threshold value, and indicates beyond autonomy deceleration of the vehicle, when a deceleration request in accordance with the amount of depression is higher than a system deceleration request.

Provided is an electronic brake system including: a reservoir in which a pressurizing medium is stored; a master cylinder configured to discharge the pressurizing medium according to a pedal effort of a brake pedal; a hydraulic pressure supply device configured to operate a hydraulic piston according to an electrical signal output in response to a displacement of the brake pedal to generate a hydraulic pressure; a hydraulic control unit connected to the hydraulic pressure supply device and configured to control a flow of the hydraulic pressure transferred to a wheel cylinder; a pedal simulator connected to the master cylinder and configured to provide a reaction force for the brake pedal; a simulator valve configured to open and close a flow path connecting the master cylinder and the pedal simulator; a cut valve configured to open and close a flow path connecting the master cylinder and the hydraulic control unit; a pedal displacement sensor configured to detect displacement information of the brake pedal; a pressure sensor configured to detect pressure information of the pedal simulator; and a controller configured to compensate for a target pressure according to the displacement of the brake pedal based on the displacement information of the brake pedal detected through the pedal displacement sensor and the pressure information of the pedal simulator detected through the pressure sensor when the cut valve is closed and the simulator valve is opened, and drive the hydraulic pressure supply device according to the compensated target pressure.

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 master cylinder. A power transmission unit is configured for selectively providing pressurized hydraulic fluid. A pair of rear brake motors selectively electrically actuate rear parking brakes. An electronic control unit controls at least one of the power transmission unit and the pair of rear brake motors. A normally-closed DAP valve is located hydraulically between the power transmission unit and at least one of a two-position three-way valve and at least the selected one of the pairs of wheel brakes. An isolation valve and a dump valve are associated with each wheel brake.

An electronic parking brake system includes an electronic parking brake (EPB) including a pair of brake pads disposed on both sides of a brake disc rotating with a rear wheel of a vehicle, a piston provided to press the pair of brake pads, a nut member provided to press the piston, a spindle member provided to move the nut member, and an electric motor configured to rotate the spindle member; a wheel speed sensor configured to detect a wheel speed of the rear wheel; a G sensor configured to detect a longitudinal acceleration of the vehicle; an accelerator pedal sensor configured to detect an operation of an accelerator pedal of the vehicle; an EPB switch configured to receive a parking apply command or a parking release command from a driver; and a controller configured to control the electric motor, wherein the controller is configured to determine whether a residual clamping force is present in the EPB based on a rear wheel speed or the longitudinal acceleration at a time of departure of the vehicle after parking is released, and when the residual clamping force is present, release the residual clamping force through an additional parking release control.

The present disclosure relates to a hydraulic pressure supply device and an electronic brake system including the same, including: a hydraulic block formed with a flow path through which oil supplied from a reservoir flows; a motor pump unit coupled to one side of the hydraulic block, configured to generate drive force by supply of power and to move forward and backward by the drive force; a sleeve coupled to an inside of the hydraulic block on the other side of the hydraulic block and configured to form a forward and backward path of the motor pump unit; a housing coupled to the other side of the hydraulic block and configured to form a space for generating hydraulic pressure with the oil supplied from the reservoir while shielding the other side of the sleeve; and a damping member provided between the sleeve and the housing and configured to absorb vibration generated between the sleeve and the housing and to prevent noise when pressure in the space for generating the hydraulic pressure rises due to the forward and backward movement of the motor pump unit.

Systems and methods are provided for compensating for a change in a brake pedal effort to brake pedal travel relationship due to temperature in an electronically-controlled braking system is provided. The method may comprise performing, using a computing device of a vehicle, a sensing function when a function to decelerate the vehicle is applied. The sensing function may comprise measuring a pedal effort measurement, measuring a pedal travel measurement, and measuring a simulator temperature measurement of a pedal feel simulator. The method may comprise performing, using the computing device, a processing function. The processing function may comprise calculating a brake command, applying a correction to the brake command based on the simulator temperature measurement, generating a final brake command, and outputting the final brake command. The method may comprise performing, using the computing device, an actuation function based on the final brake command.

An electric brake system includes a plurality of electric brake devices. A control device of each electric brake device includes: an abnormality determination section that determines whether there is abnormality in supply of power from a power supply device to the electric brake device; and a redundant function control section that, when the abnormality determination section has determined that there is abnormality in supply of power, controls the braking force by using an auxiliary power supply in accordance with a predetermined condition. The redundant function control section controls the braking force by using the auxiliary power supply at least when a desired braking force cannot be output even with all the electric brake devices for which the abnormality determination section has determined that there is no abnormality in supply of power, as the predetermined condition.

The present invention provides a braking control apparatus capable of preventing or reducing a change in a deceleration of a vehicle. The braking control apparatus is configured to change a braking force to be generated by a frictional braking device so as to achieve a calculated target braking force, and generate a braking force corresponding to a difference between the braking force to be generated by the frictional braking device and the target braking force with use of an electric braking device, when a predetermined condition is satisfied.