SYSTEME HYDRAULIQUE DE FREINAGE POUR VEHICULES AUTOMOBILES

• Main Author: BERND SCHUETT ET MARTIN KRONENBERG
• Format: Patent
• Language: French
• Published: 11.04.1986
• Edition: 4
• Subjects: ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; PERFORMING OPERATIONS; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES; TRANSPORTING; VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES; VEHICLES IN GENERAL

SYSTEME HYDRAULIQUE DE FREINAGE, DESTINE EN PARTICULIER A DES VEHICULES AUTOMOBILES, COMPRENANT UN MAITRE-CYLINDRE RENFERMANT AU MOINS DEUX CHAMBRES DE TRAVAIL, ET COMPRENANT AU MOINS DEUX CIRCUITS DE FREINAGE, UN PREMIER CIRCUIT DE FREINAGE ETANT EN COMMUNICATION HYDRAULIQUE CONSTANTE AVEC UNE PREMIERE CHAMBRE DE TRAVAIL DU MAITRE-CYLINDRE TANDIS QU'UNE UNITE DE REGULATION DE PRESSION EST PREVUE SUR UN SECOND CIRCUIT DE FREINAGE RELIE A LA SECONDE CHAMBRE DE TRAVAIL, LADITE UNITE PERMETTANT D'INFLUER DE MANIERE PREDETERMINEE SUR LA PRESSION DU SECOND CIRCUIT DE FREINAGE, CARACTERISE EN CE QUE L'UNITE DE REGULATION DE PRESSION 1 EST CONCUE POUR ETRE COMMUTEE PAR UNE UNITE ELECTRONIQUE DE SURVEILLANCE DU GLISSEMENT 62 DE MANIERE QUE LA COMMANDE DE LA PRESSION DE FREINAGE DANS LE SECOND CIRCUIT DE FREINAGE NE S'EFFECTUE QU'EN CAS DE DEFAILLANCE DE L'INSTALLATION DE REGULATION DU GLISSEMENT DE FREINAGE. A hydraulic brake system for automotive vehicles comprises a master cylinder (4) with at least two working chambers (3,5) and comprising at least two brake circuits. A first brake circuit is in constant hydraulic communication with a first working chamber (3) of the master cylinder (4), while a second brake circuit is connected to the second working chamber (5) of the master cylinder (4). A pressure control valve (1) is inserted into the connection between the working chamber (5) and the second brake circuit, the valve enabling to take influence on the pressure in the second brake circuit in a predeterminable fashion. The pressure control valve (1) is switchable by a slip monitoring electronics (62) so that braking pressure control in the second brake circuit will take place exclusively in the event of failure of the brake slip control apparatus. Thereby, the pressure variation in the wheel brakes, which is performed in a known fashion by suitable change-over of solenoid valves, will not be influenced negatively by the pressure control unit (1) when the brake slip control apparatus is intact.