| 摘要 |
PURPOSE:To allow compactness of a pump driving section by disconnecting a relief duct that bypasses a hydraulic pump and a duct between master and wheel cylinders, respectively, when the wheels are locked and opening a duct between the hydraulic pump and wheel cylinder. CONSTITUTION:Cut valves 101-104 are interposed in the first ducts (20-22 and 30-32) that connect the two pressure chambers of a master cylinder 3 to the right and left, rear and front and rear wheel cylinders 4-7 in an X- shaped form. In addition, a hydraulic motor 10 driven the exhaust oil of the hydraulic pump 12 of a power steering device and a bypass route 43 in which an ON and OFF valve 111 is interposed so as to bypass this motor 10. Hydraulic pumps 8 and 9 are driven by the hydraulic motor 10 and the exhaust oil of the pumps 8 and 9 is connected to wheel cylinders 4-7 through the second ducts (70-72 and 80-82) and switching valves 106-109. Besides, release pipes 73 and 83 in which control valves 201-202 are interposed are connected to the hydraulic pumps 8 and 9. |
