| 摘要 |
PURPOSE:To prevent abrupt change in the attitude of a car by changing over an accumulator of a supply pipeline from the control valve side as it was into the discharge path side in a pilot valve circuit using a changeover valve when the control signal current to all operational valves is interrupted, and by closing an opening/closing valve on the discharge path. CONSTITUTION:A gas spring 9 is furnished between each single-operating cylinder 5 and control valves 8a, 8b installed for each of the left and right front wheels, and a throttle mechanism 10 is provided on the supply/exhaust path to this gas spring 9 so as to exert shock-absorbing function. In this arrangement, a parallely arranged path of a normally closed solenoid valve 30 and a residual pressure valve 19' is interposed on the discharge path 28 of pilot valves 22a, 22b, and immediately after the control valves 8a, 8b on a return pipeline 17 is connected with immediately after the pilot valve on the discharge path 28 through a connecting path 32 having a throttle 31. A three-way selector solenoid valve 33 is furnished on a supply pipeline 13 in its positions immediately after accumulator, and the accumulator 14 side of this supply pipeline 13 is arranged as capable of being changed over from the control valve 8a, 8b side to a connecting line 34 in connection with a discharge path 23 in its position immediately before a residual pressure valve. |
