Hydraulic brake system for a vehicle

A vehicle hydraulic brake system, having a drive slip-control and/or driving dynamics control unit comprising a master cylinder (12), having a storage pressure chamber (14) for brake fluid, having a wheel brake cylinder (18) with which a brake pressure modulating valve assembly (24, 26) is associated, a return feed pump (30) for returning brake fluid, released from the wheel brake cylinder, in a direction of the master cylinder, a precharge pump (42) having a pressure delivery outlet that communicates with said pressure chamber of the master cylinder, the pressure delivery outlet of the precharge pump (42), communicates with the pressure chamber (14) through a hydraulic element (44, 58, 60) the pressure chamber of the brake master cylinder, the pressure chamber has a connection piece (66) located on a same side of the pressure chamber as the brake master cylinder which penetrates into the latter, the delivery side of the precharge pump (42) communicates, by means of said connection piece (66), with the pressure chamber (50) of the brake master cylinder (12), and the precharge pump (42) delivers fluid at a low pressure which prefills the wheel brake cylinder (18) by means of a brake-pressure which prefills the wheel brake cylinder (18) by means of a brake-pressure modulation valve arrangement (24), for applying fluid to the brake linings, and charges the return pump (30) by means of a suction line (36) and a suction valve (38) installed in the suction line and capable of being opened for the traction control mode and/or driving dynamics control mode, a hydraulic element (56) being designed to limit the low pressure from the precharge pump.