| 摘要 |
PURPOSE:To prevent a suspension unit from pitching upon acceleration, by carrying out the opening control of both discharge valves for front wheels and supply valves for rear wheels, for a predetermined time when the opening rate of an accelerator exceeds a predetermined value and the shift stage of a speed change gear unit is set at a low speed position. CONSTITUTION:A controller 36 receives an accelerator opening degree signal delivered from a sensor 49 and a shift stage signal delivered from a sensor 52, and therefore, performs an acceleration control when the opening degree of an accelerator exceeds a predetermined value and the shift position of a speed change gear unit is set at a low speed position. That is, front side discharge solenoid valves 273, 274 and rear side supply solenoid valves 221, 222 are controlled to be opened for a predetermined time. Thereafter, when the variation rate of rotational speed of a drive system is lowered, front side supply solenoid valves 223, 224 and rear side discharge solenoid valves 271, 273 are controlled to be opened for a predetermined time. |
