| 摘要 |
PURPOSE:To prevent a shock at a deceleration stopping time by driving a control valve in a specific time to be longer than a time selected by an acceleration/ deceleration feeling regulating knob according to a map stored beforehand, to reduce the operating oil flow rate, and increasing the flow rate after a specified time elapses, when an accelerating operation is carried out by using the accelerator. CONSTITUTION:When a controller 18 detects that an accelerator decelerating operation is carried out depending on the signals of an accelerator operating amount sensor 29 and a brake operating amount sensor 32, the controller 18 clears a time measuring counter 37 to zero. And, until the measurement value of the time measuring counter 37 reaches a set time, a solenoid valve 21 is controlled depending on a map C stored beforehand. Since the map C is set at an opening smaller than the opening of a map A normally, the openerating oil flow is reduced, a piston 9a in a servo cylinder 8 moves slowly, and a deceleration is carried out smoothly. When the measured time comes to a specified time, the solenoid valve 21 is controlled according to a map D, to increase the operating oil flow rate, and the speed of the piston 9a is increased. |
