| 摘要 |
PURPOSE:To make constitution of a control system simple and to carry out control of a speed change smoothly, by controlling a tilting angle of a swash plate of a variable capacity hydraulic pressure pump and a motor electrically through an engine speed, car speed instructions and speed reduction instructions. CONSTITUTION:A driving wheel is driven by discharge oil of a hydraulic pressure pump 11 to be rotated and driven by connecting the pump 11 with an output shaft 1a of an engine 1, and a discharge direction and a discharge quantity of hydraulic operating oil of the hydraulic pressure pump 11 are controlled by a pump swash plate servo 14. This servo 14 is made to control a tilting direction and a tilting angle of a swash plate 11b according to polarity and size of a pump capacity change signal Sp from a controller 20, and the hydraulic pressure motor 12 is controlled similarly by a motor swash plate servo 15. A control signal is applied to each of servoes 14 and 15 by the controller 20 according to instructions of locations for a throttle lever 2, car speed setting lever 3 and a brake pedal 4 and a speed of this engine. |
