Electrohydraulic brake control device for a motor vehicle, and brake system

An electrohydraulic brake control device for a motor vehicle having at least four hydraulically actuatable wheel brakes, said brake control device comprising:

• an electrically actuatable pressure source;
• an electrically actuatable inlet valve for each wheel brake;
• an electrically actuatable outlet valve for each wheel brake;
• a brake supply line connected to the at least four inlet valves;
• an electrically actuatable circuit separation valve arranged in the brake supply line such that when the circuit separation valve is closed, the brake supply line is hydraulically separated into a first line section and a second line section;
• at least four hydraulic wheel ports for connection to the wheel brakes;
• a first hydraulic port for connection to a pressure medium reservoir;
• and
• a second hydraulic port for connecting a further pressure source;
• wherein the first line section of the brake supply line is hydraulically connected to the electrically actuatable pressure source and at least two of the at least four inlet valves;
• and
• wherein the second line section of the brake supply line is hydraulically connected to the second hydraulic port and the other of the at least four inlet valves.

A brake system for a motor vehicle having at least four hydraulically actuatable wheel brakes, said brake system comprising:

• a first electrohydraulic brake control device, including
• an electrically actuatable pressure source;
• an electrically actuatable inlet valve for each wheel brake;
• an electrically actuatable outlet valve for each wheel brake;
• a brake supply line connected to the at least four inlet valves;
• an electrically actuatable circuit separation valve arranged in the brake supply line such that when the circuit separation valve is closed, the brake supply line is hydraulically separated into a first line section and a second line section;
• at least four hydraulic wheel ports for connection to the wheel brakes;
• a first hydraulic port for connection to a pressure medium reservoir;
• and
• a second hydraulic port for connecting a further pressure source;
• wherein the first line section of the brake supply line is hydraulically connected to the electrically actuatable pressure source and at least two of the at least four inlet valves, and
• wherein the second line section of the brake supply line is hydraulically connected to the second hydraulic port and the other of the at least four inlet valves;
• and
• a second electrohydraulic brake control device including a second electrically actuatable pressure source, wherein the first electrohydraulic brake control device and the second electrohydraulic brake control device are connected to one another by at most one pressure-resistant hydraulic connecting element.