Patent ID: 8651586

Claim:
A braking device for a motor vehicle, comprising: a first group of brake circuits; and a second group of brake circuits; wherein one group of wheels is associated with each brake circuit, at least the first group of brake circuits being hydraulic brake circuits, at least one group of wheels being connected to at least one operating unit for causing a deceleration of the wheels, having a control unit, which controls the brake application of a brake circuit or circuits of the second group and the deceleration effect of the operating unit, and wherein the first group of brake circuits is activatable directly by the driver using a brake operating unit, wherein a brake circuit of the second group is a hydraulic brake circuit and is directly hydraulically connectable to the brake operating unit, wherein the hydraulic brake circuit of the second group has a hydraulic auxiliary accumulator on an intake side of a hydraulic pump of the hydraulic brake circuit in the form of a piston/cylinder system having a spring pre-tension which generates a suction effect, wherein the hydraulic auxiliary accumulator is not connected to the first group of brake circuits.