Patent ID: 11964644
Assignee: CONTINENTAL TEVES AG & CO. OHG
Field: Transport (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 14:
15. A brake system comprising:
a) hydraulic wheel brakes, wherein two wheel brakes are hydraulically assigned to a first brake circuit and two wheel brakes are hydraulically assigned to a second brake circuit;
b) a pressure medium reservoir which is under atmospheric pressure;
c) an electronic open-loop and closed-loop control unit;
d) a pressure modulation unit for setting wheel-specific brake pressures, which are derived from the brake system pressure;
e) an electrohydraulic pressure provision device which is connected to the pressure modulation unit and to the pressure medium reservoir and which outputs the brake system pressure to the pressure modulation unit and which, for the compensation of its volume balance, draws in pressure medium from the pressure medium reservoir;
f) a first and a second pressure activation valve for connecting the pressure provision device to the pressure modulation unit,
wherein the pressure provision device comprises a double-acting piston-cylinder arrangement, wherein a piston of the piston-cylinder arrangement separates two pressure spaces from one another, wherein a pressure build-up occurs in the first pressure space during a backward movement of the piston and occurs in the second pressure space during a forward movement of the piston, and wherein the two pressure spaces are hydraulically connectable to one another in a manner separable by a circuit separation valve,
wherein during a brake pressure build-up by a forward stroke of the piston of the piston-cylinder arrangement in a predefined situation, the brake system is configured to (i) open the first pressure activation valve; (ii) hydraulically separate the first pressure space from the pressure medium reservoir; and (iii) open the circuit separation valve to hydraulically connect the two pressure spaces to one another.