Patent ID: 8668280

Claim:
Brake circuit for a hydraulic brake system for a land vehicle, having: a first wheel brake, a control unit devised to supply control signals for the control of automatic braking operations, a controllable valve device for establishing and blocking a first hydraulic connection for supplying brake pressure generated by a driver of the land vehicle to the brake circuit, a controllable pump for the controlled build-up of brake pressure in the brake circuit, and a first controllable wheel-brake valve arrangement associated with the first wheel brake for controlling the brake pressure characteristic in the first wheel brake, wherein the wheel-brake valve arrangement comprises a first controllable valve having a throttle that is effective in the open valve state, wherein in response to a blocking of the first hydraulic connection by the control unit by means of the controllable valve device, the control unit controls the wheel-brake valve arrangement and the pump in such a way, that the first wheel-brake valve arrangement adopts an operating state that establishes a first hydraulic connection between the output side of the first wheel brake and the input side of the pump, and between the output side of the pump and the input side of the first wheel brake, and the generation of back-pressure is enabled at the throttle, the pump adopts an operating state that generates a predetermined brake pressure at the input side of the first wheel brake and a back-pressure at the throttle, and after the generation of the predetermined brake pressure, the brake pressure is thereby maintained, that the wheel-brake valve arrangement adopts an operating state in which the hydraulic connection is established between the output side of the pump and the input side of the first wheel brake and the hydraulic connection is blocked between the output side of the first wheel brake and the input side of the pump.