Patent ID: 11964640
Assignee: CONTINENTAL TEVES AG & CO. OHG
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 11:
12. A brake system comprising:
hydraulically actuatable wheel brakes, which comprises an electrically controllable pressure supply device, which is separably connected to the wheel brakes;
a master brake cylinder which can be actuated by a brake pedal and which is separably connected to the wheel brakes;
a brake fluid reservoir having a first and a second reservoir chamber which are separated by a first partition wall;
wherein the first reservoir chamber is connected to the pressure supply device via a first port for fluid removal, via which the pressure supply device is supplied with pressure medium, and the second reservoir chamber is connected to the master brake cylinder via a second port for fluid removal, via which the master brake cylinder is supplied with pressure medium;
the brake fluid reservoir comprises a first sensor element for determining a first filling level, and the brake fluid reservoir comprises a second sensor element for determining a second filling level, wherein the first sensor element detects the first filling level in a first region situated above the first partition wall, and wherein the second sensor element detects the second filling level in a second region situated in the second reservoir chamber;
the brake system is operated in a first fallback operating mode when the determined first filling level in the brake fluid reservoir falls below a first predetermined level (p1), and in that the brake system is operated in a second fallback operating mode when the determined second filling level in the brake fluid reservoir falls below a second predetermined level (p2);
wherein the pressure supply device is separated from the wheel brakes and connects the master brake cylinder to the wheel brakes in the first fallback operating mode such that brake pressure in the wheel brakes is provided by the master brake cylinder; and
the second level (p2) is lower than the first level (p1).