| 摘要 |
PURPOSE:To improve the reliability in the rear wheel control by installing a rear wheel control valve for a front wheel which is steered by a manual steering device. CONSTITUTION:A rear wheel control valve 5 for varying the discharge quantity and the direction of flow of the pressurized oil supplied from a pump 4 is installed onto a steering shaft 1. The oil sending pipes l1 and l2 for the pressurized oil discharged through the control valve 5 are connected with the pressure chamber of a power cylinder 6 for rear wheels. A direction selecting valve 7 is arranged midway in an oil feeding circuit, and a short connecting pipe l3 is arranged, and a variable throttle valve 8 is interposed. The car speed signal, steering angle signal, and the engine revolution speed signal are input into a controller 9, and control signals are input into the direction selecting valve 7 and the variable throttle valve 8. |
