| 摘要 |
The invention relates to a brake system for motor vehicles, comprising hydraulically actuatable wheel brakes (50, 51, 52, 53), a pressure-medium reservoir (80) under atmospheric pressure, and a first electrohydraulic brake control device (60), which comprises a first pressure control valve assembly (62) for setting wheel-specific brake pressures, a first electrically controllable pressure source (63), and, for each wheel brake, a wheel-specific output pressure connection (20, 21, 22, 23), wherein a second electrohydraulic brake control device (70) is provided, which comprises a second pressure control valve assembly (3, 6, 7, 16), a second electrically controllable pressure source (1), and a reservoir connection (81). For a group of wheel brakes (50, 51; 50, 51, 52, 53), the second electrohydraulic brake control device is connected in series between the associated output pressure connections (20, 21; 20, 21, 22, 23) of the first brake control device (60) and the wheel brakes of the group of wheel brakes (50, 51; 50, 51, 52, 53), and the second electrohydraulic brake control device is connected to the pressure-medium reservoir (80) by means of the reservoir connection (81). The invention further relates to a brake control device (70) for at least two hydraulically actuatable wheel brakes (50, 51, 52, 53) of a motor vehicle brake system, which brake control device comprises an electrically controllable pressure source (1), a wheel-specific output pressure connection (40, 41, 42, 43) for each of the wheel brakes, and a pressure control valve assembly (3, 6, 7, 16) for setting wheel-specific brake pressures at the output pressure connections, wherein the brake control device (70) comprises a reservoir connection (81) for connecting to a pressure-medium reservoir (80) under atmospheric pressure and comprises a wheel-specific input pressure connection (30, 31, 32, 33) for each of the wheel brakes. |
