Brake control arrangement for motor vehicle, has rapid rebalancing valve arranged inside rigid envelope and allowing vacuum chamber to directly communicate with work chamber without passing through outer pneumatic circuit

摘要

The arrangement has a pneumatic servomotor comprising a control piston coupled with a brake pedal, where the piston is mounted to slide between rear rest and front positions. A hydraulic or pneumatic pressure regulator is arranged outside a rigid envelope and includes a balancing valve allowing a vacuum chamber (24) to communicate with a work chamber (26) through an outer pneumatic circuit. The servomotor includes a rapid rebalancing valve (120) arranged inside the envelope and allows the vacuum chamber to directly communicate with the work chamber without passing through the circuit.