Brake control device for motor vehicle, has hollow rod including opening to intake pressurized air, which circulates in rod till front chamber, with respect to depression for driving displacement of piston and push rod of master cylinder

摘要

The device has an amplifier box divided into front and rear chambers (2, 3) by a control piston (4a) and subjected to depression. A hollow control rod (12) is moved inside a control body (4b) under an effect of a mechanical force produced by supporting on a brake pedal of a motor vehicle, where the piston is integrated to the control body. The rod comprises an opening on its lateral surface to intake pressurized air, which circulates in the rod till the front chamber, with respect to the depression for driving displacement of the piston and a push rod (24) of a master cylinder (9). An independent claim is also included for a method of actuating a motor vehicle braking device.