Patent ID: 8668280
Filing Date: 2014-03-11
Classification: B60T

Abstract:
1. 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 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