Brake system with electric servo brakes

A brake system with electric servobrake comprising a servobrake acting in a controlled manner on a master cylinder via a thrust rod driven by the servobrake and actuating a piston (primary piston) of the master cylinder, the servobrake being linked by a hydraulic actuator to the control rod of a brake pedal, characterized in that

• the servobrake (200) comprises
• an actuator piston (220) controlled by an electric motor (265) via a rack drive (260),
• a simulator chamber (250) delimited by the hydraulic actuator (270) and subdivided by an intermediate piston (240) into a rear volume (V1) and a front volume (V2), which are variable,
• the rear volume (V1) delimited by the hydraulic actuator (270) and the intermediate piston (240),
• the front volume (V2) delimited in the simulator chamber (250) by the intermediate piston (240),
• a duct (L1) linking the rear volume (V1) to a duct (L2) linked to the front volume (V2) via a first solenoid valve (EV1), the duct (L2) linked to a tank (115) by a second solenoid valve (EV2),
• the first solenoid valve (EV1) controlled in an open position, its uncontrolled position being a closed position,
• the second solenoid valve (EV2) controlled in a closed position, its uncontrolled position being an open position,
• the intermediate piston (240) is linked to the thrust rod (130) bearing an abutment (132) thrust by the actuator piston (220),
• the thrust rod (130) being thrust by the intermediate piston (240) independently of the actuator piston (220).