BRAKE SYSTEM HAVING SIMULTANEOUS OR PARTIALLY SIMULTANEOUS PRESSURE GENERATION AND REDUCTION IN THE WHEEL BRAKES FROM DIFFERING WHEEL CYLINDER PRESSURE LEVELS

摘要

As braking system having a brake booster, the piston of the braking system-cylinder systems (14, HZ, THZ) are, in particular, driven or mechanical-hydraulic by an electric motor by a transmission means and the piston-cylinder system and the one or more working chambers of the (14, HZ, THZ) connected to more than one wheel brake by the hydraulic line, the wheel brake in each case 2/2-way switching valve (17a, 17b , 17c, 17d) and is assigned a wheel brake (18a, 18b, 18c, 18d) and piston - hydraulic connection line between the cylinder system (14, HZ) are 2/2-way switching valve (17a, 17b, 17c by, 17d), optionally are independently or in combination (jointly), it can be closed, simultaneously and / or in relation to the multi-way in turn to each other in the wheel brake (18a, 18b, 18c, 18d) accordingly to each of the magnetic valve from the working chamber of the cylinder system (14, HZ, THZ) - and the pressure can be adjusted, the electric motor and the switching valves (17a, 17b, 17c, 17d) that is controlled by the control device, and the piston hydraulic connection line the flow resistance (RL _i ) to have, and each of the flow resistance switching valve with the hydraulic lines to the wheel cylinders (17a, 17b, 17c, 17d) (RV _i ) to have the piston speed HZ each wheel brake (18a, 18b, 18c, 18d) on the pressure reduction gradient and pressure gradient caused the decision to the flow resistance (RL _i , and smaller the RV _i ), less than the flow resistance (RL _i ) is the flow resistance (RV _i ), and the control the adjustment or control of the piston movement and the piston speed characteristic according to the volume-pressure device of the wheel brake (18a, 18b, 18c, 18d) and the pressure generated during the pressure reduction.