Patent ID: 7419227

Claim:
A braking device for a motor vehicle, comprising a first brake circuit ( 10 ), which includes a master cylinder ( 11 ) controlled by a brake pedal ( 12 ), a first outlet ( 14 ) and a second outlet ( 15 ) of said master cylinder being connected to wheel brakes ( 18 ) via connection means ( 21 , 23 , 25 ) controlled by a programmed computer (C), a second brake circuit ( 20 ), which includes at least one pump ( 27 ) supplied from the master cylinder ( 11 ) in order to supply the wheel brakes ( 18 ) under control of the computer (C), and pedal travel simulation means ( 40 ) associated with said first brake circuit ( 10 ) and allowing displacement of the pedal ( 12 ) when said connection means ( 21 ) are closed, said pedal travel simulation means ( 40 ) comprising a solenoid valve ( 41 ) which is mounted in a pipe ( 42 ) that contains a hydraulic fluid and is connected to a hydraulic fluid storage chamber ( 43 ), said solenoid valve ( 41 ) being controlled by the computer (C) and is connected to another pipe ( 44 ) in which hydraulic fluid is displaced in a first direction by a first part ( 45 ) of a control rod provided between the brake pedal ( 12 ) and a second part ( 46 ) of the control rod associated with the master cylinder ( 11 ) or with a pneumatic brake booster, said storage chamber ( 43 ) contains a first piston ( 47 , 50 , 59 ) that is urged by a return spring ( 48 , 52 , 60 ) in a second direction in which the hydraulic fluid is pushed out of said storage chamber ( 43 ), said pipe ( 42 ) that includes said solenoid valve ( 41 ) controlling hydraulic fluid such that said return spring ( 48 , 52 , 60 ) urges hydraulic fluid from said storage chamber ( 43 ) and combined with hydraulic fluid displaced by said first part ( 45 ) to effect a brake application.