Patent ID: 8303048

Claim:
Brake control system for a motor vehicle comprising a brake pedal ( 1 ), a brake booster ( 4 ) which comprises a front chamber ( 40 ) and a rear chamber ( 41 ) which are separated by a booster piston ( 42 ), the booster ( 4 ) supplying an amplified braking command dependent on the pressure difference between the two chambers, a brake master cylinder ( 5 ) receiving the amplified braking commands from the brake booster ( 4 ), characterized in that the brake control system comprises a simulator ( 3 ) not mechanically coupled to the piston ( 42 ) of the brake booster ( 4 ), the simulator receiving at least one braking command from the brake pedal ( 1 ) and in return one of establishing and controlling a pressure difference between the front chamber ( 40 ) and the rear chamber ( 41 ) of the brake booster so as to control the movement of the booster piston ( 42 ), and in that the brake booster ( 4 ) does not have a piston equipped with a three-way valve secured to the booster piston ( 42 ), the simulator ( 3 ) including a piston ( 34 ) receiving the at least one braking command from the brake pedal, a sensor spindle ( 301 ) separate from the piston ( 34 ) and operable to control a three-way control valve, and an elastic simulation element ( 310 ) transmitting forces between the piston ( 34 ) and the sensor spindle ( 301 ).