With the wheel cylinder pressure level which differs, with the wheel brake, simultaneous or the braking system which partly simultaneously pressure occurs and decreases and

摘要

It regards the braking system. As for the braking system, being the piston - cylinder system (14, HZ and THZ) of the brake booster which is driven by the brake booster and the electric motor, being hydraulic connected route with the wheel brake and the wheel brake (18a, 18b, 18c and 18d) and the piston - cylinder system (14, HZ) where it can allot to 2/2 one switching valves (17a, 17b, 17c and 17d) the piston - cylinder system and each one where the piston - cylinder system (14, HZ and THZ) at least one job chamber, is connected at least by the hydraulic route to two wheel brakesBeing optional, being separately or joint, it has with the hydraulic connected route whose it is possible to close with 2/2 one switching valves (17a, 17b, 17c and 17d). Pressure of the wheel brake (18a, 18b, 18c and 18d) reaches with multiplex method, one after another and/or simultaneously be able to adjust, the electric motor and the switching valve (17a, 17b, 17c and 17d) are controlled by the control device, and hydraulic connected route to the respective magnetic valve has flow resistance RL from the job chamber of the piston - cylinder system (14, HZ and THZ), is provided together in hydraulic route to the wheel cylinder (17a, 17b, 17c and 17d), the respective switching valve has flow resistance RV. Because flow resistance RL and flow resistance RV are small, be able to decide the pressure decrease slope and pressure occurrence slope with of the respective wheel brake (18a, 18b, 18c and 18d) with HZ piston speed, flow resistance RL is smaller than flow resistance RV, and, while decreasing the occurrence and the pressure of pressure, the control device adjusts or controls the movement and piston speed of the piston as a function of pressure capacity quality of the wheel brake (18a, 18b, 18c and 18d). Selective figure Figure 1