| 摘要 |
PURPOSE:To make a relative positional relationship automatically compensagle, by operating a control unit with a compensating solenoid valve at a time when the relative positional relationship between front and rear wheels is shifted. CONSTITUTION:Each steering angle of front angle of front and rear wheels detected by a front-wheel steering angle detector 44 and a rear-wheel steering angle detector 42 is calculated, and when is produced slippage in a relative positional relationship between these front and rear wheels, either of a solenoid 33aor 33b of a compensating solenoid valve 33 is excited. That is to say, a control unit 41 selects the compensating solenoid valve 33 so as to cause pressure oil in a pump PD2 to be supplied to a passage 31 or 32 when a steering angle at the rear-wheel side is more delayed than the target, and when reversely the steering angle at the rear-wheel side goes forward, this passage 31 or 32 is made so as to escape to a tank T. |
