Patent ID: 6199958
Filing Date: 2001-03-13
Classification: B60T

Abstract:
Hydraulic unit for an automotive vehicle brake system comprising:a first port on the hydraulic unit that leads to a braking pressure generator,pressure control valves configured as inlet and outlet valves in a brake circuit that is provided at least in part in the hydraulic unit, wherein said brake circuit is connected to at least one pair of wheel brakes by way of a second and a third port of said hydraulic unit,a low-pressure accumulator arranged in the hydraulic unit downstream of the outlet valves,a pump suction conduit arranged in the hydraulic unit downstream of the outlet valves which is separated from a pump by way of a pressure-retaining valve from the first port leading to the braking pressure generator by a change-over valve which is closed in the initial position, wherein the brake circuit includes a prefilling location which opens into the pump suction conduit between the outlet valves and the pressure-retaining valve to take up brake fluid.