| 摘要 |
PURPOSE:To reduce the number of valves by feeding the discharge pressure of an oil pump to the hydraulic elements through a specific servo valve. CONSTITUTION:In the servo valve 1 equipped with the input port 2 connected to the discharge port 13 of an oil pump 10 and the output port 4 connected to the passage 14 to the hydraulic elements, the intermediate port 6 installed between the port 4 and a drain port 5 is opened and closed by the poppet valve body 8 installed at the center of a solenoid 7, which is controlled through a driving device 36 by the controller 20 which receives the signals from a car speed sensor 16, ignition coil 22, and a throttle sensor 23. When the exciting current of the solenoid 7 increases for instance, the amount of displacement of the valve body 8 increases, the amount of oil which returns to the pump 10 through the port 5 reduces, and the oil pressure Pl in the passage 14 increases. Thus, governors etc. can be omitted. |
