| 摘要 |
PURPOSE:To provide a constant steering force irrespective of weather by providing a reaction regulating valve in a path affording communication between a pair of reaction chambers of a control valve to controllably open and close said regulating valve according to the signals from a wiper switch and a vehicle speed sensor. CONSTITUTION:A pair of reaction chambers 43, 44 are provided at both sides of a spool 31 of a control valve 13 and communicate with each other through a reaction communicating path 15 which is provided with a reaction adjusting valve 16. The throttle of this valve 16 is controlled by a control unit 60 on the basis of signals from a wiper switch 61 and a vehicle speed sensor 62. That is, the adjusting valve 16 is adjusted such that in fine weather or low speed, the throttle of the reaction adjusting valve 16 is small and in rainy weather or high speed the throttle of the reaction adjusting valve 16 is large. |
