Patent ID: 6877822

Claim:
Hydraulic unit for slip-controlled braking systems comprising: an accommodating member for accommodating inlet and outlet valves in several valve accommodating bores of a first and a second valve row, said inlet and outlet valves opening into a first housing surface of the accommodating member that is disposed at right angles to a second housing surface into which several braking pressure generator ports open, a pump accommodating bore arranged in the accommodating member, wherein said pump accommodating bore is directed transversely to the direction the valve accommodating bores, wherein the valve accommodating bores for the outlet valves are arranged in the second valve row that is directly adjacent to the pump accommodating bore, a motor accommodating bore arranged in the accommodating member and directed vertically to the pump accommodating bore, an accumulator accommodating bore opening arranged in the accommodating member, wherein the accumulator member includes several pressure fluid channels that connect the accommodating bores for the valve, the pump and the accumulator, wherein the several pressure fluid channels enable a hydraulic communication between a braking pressure generator and several wheel brakes, wherein the inlet valves are arranged in the valve accommodating bores of the first valve row which is spatially separated from the second valve row accommodating the outlet valves by the pump accommodating bore, wherein several valve accommodating bores of a third valve row remote from the pump accommodating bore open directly between the second valve row and the braking pressure generator ports into the first housing surface of the accommodating member, an electric change over valve for effecting hydraulic communication between at least one braking pressure generator port and a suction-side connection of the pump accommodating bore wherein said electric change-over valve is closed in its basic position in at least one valve accommodating bore of the third valve row, wherein the hydraulic communication between said changeover valve and the pump accommodating bore is established by way of a portion of a suction channel, the length thereof being determined by the distance between the pump accommodating bore and the third valve row, wherein a closure member is mounted into the suction channel as a transverse bore from the direction of the second housing surface in order to prevent a short-circuit current between a first and a fourth portion of the suction channel.