Disclosed is a brake system. The brake system may include a first power source which supplies power of a first voltage, a motor which receives the power from the first power source and is driven to generate a hydraulic braking pressure while a vehicle travels, a second power source which supplies power of a second voltage that is lower than the first voltage, and a controller which receives the power from the second power source and controls the motor.

Disclosed is a brake system. The brake system may include a first power source which supplies power of a first voltage, a motor which receives the power from the first power source and is driven to generate a hydraulic braking pressure while a vehicle travels, a second power source which supplies power of a second voltage that is lower than the first voltage, and a controller which receives the power from the second power source and controls the motor.

Electrohydraulic actuator device for a motor vehicle brake system, comprising a cylinder housing, within which a pressure piston is displaced in a translational manner by a rotating threaded spindle, wherein the threaded spindle is driven via a transmission device by a rotor shaft of an electric motor, wherein the actuator device comprises an electronic unit, and a brake system for a motor vehicle having such an electrohydraulic actuator device and a pressure generator, a pressure modulation valve device for the wheel-individual generation of brake pressure at wheel brakes of the brake system, an electronic control device, which is designed for controlling the pressure generator and the pressure modulation valve device, and having a driver's brake actuation device.

Electrohydraulic actuator device for a motor vehicle brake system, comprising a cylinder housing, within which a pressure piston is displaced in a translational manner by a rotating threaded spindle, wherein the threaded spindle is driven via a transmission device by a rotor shaft of an electric motor, wherein the actuator device comprises an electronic unit, and a brake system for a motor vehicle having such an electrohydraulic actuator device and a pressure generator, a pressure modulation valve device for the wheel-individual generation of brake pressure at wheel brakes of the brake system, an electronic control device, which is designed for controlling the pressure generator and the pressure modulation valve device, and having a driver's brake actuation device.

A braking control device for a vehicle includes an upper braking unit configured to pressurize a supply pressure by throttling, with a pressure adjustment valve, a circulation flow discharged by a fluid pump driven by an electric motor, and a lower braking unit disposed between the upper braking unit and a wheel cylinder and configured to pressurize the supply pressure to output a wheel pressure to the wheel cylinder. In a case where the lower braking unit pressurizes the wheel pressure, the upper braking unit reduces a rotation number of the electric motor as compared with a case where the lower braking unit does not pressurize the wheel pressure.

A braking control device for a vehicle includes an upper braking unit configured to pressurize a supply pressure by throttling, with a pressure adjustment valve, a circulation flow discharged by a fluid pump driven by an electric motor, and a lower braking unit disposed between the upper braking unit and a wheel cylinder and configured to pressurize the supply pressure to output a wheel pressure to the wheel cylinder. In a case where the lower braking unit pressurizes the wheel pressure, the upper braking unit reduces a rotation number of the electric motor as compared with a case where the lower braking unit does not pressurize the wheel pressure.

A braking control device includes a fluid pump driven by an electric motor via a coupling part, a differential pressure valve provided in a fluid path connecting a discharge part and an intake part of the fluid pump, the differential pressure valve increasing a wheel pressure of a wheel cylinder by increasing a braking liquid discharged from the fluid pump to an output pressure, and a controller that drives the electric motor and the differential pressure valve. When a valve opening amount of the differential pressure valve is reduced in a state in which the electric motor is driven, the controller performs an appropriateness determination as to whether or not the coupling part is normal based on a change in a state quantity related to the electric motor.