When braking force is applied to a vehicle by the operation of a brake actuator, this control device, which is a vehicle brake control device, calculates the time to stop TTS on the basis of the relationship between the vehicle speed VS and the vehicle deceleration DVS. In addition, when the calculated time to stop TTS becomes less than a restriction determination time TTSTH, the control device stops the operation of the supply pumps of the brake actuator.

A hydraulic power unit for a slip control system of a vehicle hydraulic brake system includes a hydraulic block that is equipped with hydraulic constructional elements such as hydraulic pumps and solenoid valves of the slip control system and an electric motor that is configured to drive the hydraulic pumps. The power unit further includes hydraulic accumulators attached on the outside on the hydraulic block in a control unit housing arranged next to an electronic control unit of the slip control system in order to save installation space.

Disclosed herein is an electronic brake system, which includes at least one or more valves provided to control a hydraulic pressure delivered to wheel cylinders provided in wheels, a pressure measurer configured to measure the hydraulic pressure delivered to the wheel cylinders provided in the wheels, and a controller configured to open at least one or more valves that deliver the hydraulic pressure to a corresponding wheel cylinder and close at least one or more valves that deliver the hydraulic pressure to the remaining wheel cylinders other than the corresponding wheel cylinder when the at least one or more valves are detected as being opened or closed a predetermined number of times or more during a predetermined time period, and synchronize the measured hydraulic pressure with a hydraulic pressure of the wheel cylinder having all of the at least one or more valves open.

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 brake control system adapted to prevent or reduce noise is provided.

A brake control system switches a pressure increase mode between first pressure increase that closes a differential pressure valve placed between a master cylinder and a wheel cylinder and activates a pump to increase wheel cylinder hydraulic pressure and second pressure increase that allows brake fluid to leak through the differential pressure valve and activates the pump to increase the wheel cylinder hydraulic pressure, according to the state of a vehicle.

A method for dimensioning a component of a braking system; the braking system having at least two brake-circuit partial circuits; each brake-circuit partial circuit having at least one pump element for building up a brake-circuit pressure and/or for returning brake-circuit fluid in an ABS case, the pump elements of the at least two brake-circuit partial circuits being operable using a motor element; and the at least two brake-circuit partial circuits being separable using a separating element, so that different brake-circuit pressures may be created in the at least two brake-circuit partial circuits.

A braking system for vehicles comprising a pilot pump provided with a manual actuation means, the pilot pump being fluidically connected to a hydraulic actuator device in turn operatively connected to a braking device associated with a wheel of said vehicle, wherein the hydraulic actuator device delimits a first and a second actuation chamber fluidically separated by a movable septum along an axial direction X-X, the first actuation chamber containing fluid pressurised by the pilot pump, the second actuation chamber being filled with fluid under pressure and being provided with a delivery duct fluidically connected to said braking device. Advantageously, the hydraulic actuator device comprises a by-pass, offset axially with respect to said delivery duct and fluidically connected with the latter, the movable septum being connected to motor means in order to translate axially, independently of the braking action imposed through the manual actuation means of the pilot pump, the system comprising a processing unit and control operatively connected with the motor means and programmed so as to pass from a condition of standard operation or deactivation of the motor means, in which the movable septum connects the first actuation chamber with the by-pass and with the second actuation chamber, to a braking correction condition in which the motor means are activated to move the movable septum so that the first actuation chamber is fluidically separated from the by-pass and the second actuation chamber. In this way, the second actuation chamber, fluidically connected to the delivery duct, commands the actuation of the braking device, excluding the action imposed by the user through the pressurised fluid in the first actuation chamber.

At least some embodiments of the present disclosure are directed to distributed pump architectures used in control systems for multifunctional machines. In some cases, a control system for a multifunctional machine includes three or more control circuits. At least two of the control circuits each has a hydraulic fluid pump and each of the pumps is controlled by a different control circuit. At least two of the hydraulic fluid pump have different flow rates.