BRAKE SERVO WITH SELECTIVE PNEUMATIC FEEDBACK

摘要

A pneumatic brake servo including two working chambers and two feedback chambers for generating a pneumatic feedback force. A selective valve (13) is operative, in response to an air flow greater than a predetermined value between the rear working chamber and the front feedback chamber, to at least partially seal off the channel (C2) between said two chambers and thus adapt the response time of the servo to the force applied thereto.