HYDRAULIC BRAKE SYSTEM

摘要

Improving a hydraulic brake system. To a common passage 102, there are connected a plurality of brake cylinders 42, 52 and also a power-operated hydraulic-pressure generating device 65 and a reservoir 82. A pressure control valve group 119A is disposed between the power-operated hydraulic-pressure generating device 65 and the common passage 102, while a pressure control valve group 119D is disposed between the common passage 102 and the reservoir 82. Each of the pressure control valve groups 119A, 119D includes a corresponding one of linear control valves 112, 116 and a corresponding one of ON/OFF control valves 114, 118. Therefore, as compared with an arrangement without provision of the ON/OFF control valves 114, 118 therebetween, it is possible to increase change gradient of the hydraulic pressure in the common passage 102 and change gradient of the hydraulic pressure in each of a plurality of brake cylinders 42, 52.