Vehicular hydraulic braking system with antilock mode - uses concentrically seated electromagnetic valve to evacuate working chambers and fill vacuum chambers of braking force amplifier

摘要

The tandem master cylinder (2) is actuated by a vacuum braking force amplifier (1) with a partition (8) between two regions, each divided by a movable diaphragm (10, 9) into a vacuum chamber (50; 52) and a working chamber (51;53). Two coils (44, 45) generate opposed magnetic fields driving the carrier (34) which surrounds the reaction piston (30) against a valve ring (39) coupled by a spring to the brake pedal piston (33). This movement breaks the atmos. connection to the working chambers (51, 53) which can then be evacuated (62). ADVANTAGE - Working chambers are filled and evacuated by less complex and more reliable control valve.