A valve system of a braking device provided with a stroke simulator (64), which is located at the end of a liquid flow passage (41) connected to a connection passage (22d) for making a master cylinder (34) communicate with a wheel cylinder (32), and a third shut-off valve (62), that is a solenoid valve and performs opening and closing of a communication between the master cylinder (34) and the stroke simulator (64), wherein the third shut-off valve (62) is a normally closed valve; and the valve system opens the third shut-off valve (62) by applying a start-up voltage, thereafter keeps the open state of the third shut-off valve (62) by alternately applying a holding voltage lower than the start-up voltage and either the start-up voltage or an intermediate voltage, in order to prevent heat generated in the third shut-off valve (62) from becoming excessively high when keeping the open state of the valve (62).
Valve system of braking device
Ventilsystem einer Bremsvorrichtung
Système de soupape d'un dispositif de freinage
2017-04-26
Patent
Electronic Resource
English
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
Hydrostatic driving vehicle walking braking system, braking valve and braking method
European Patent Office | 2023
|