| 摘要 |
<p>A control for a hydrostatic transmission which includes a horsepower control valve in the control circuit for controlling the speed of the hydrostatic transmission and which is responsive to the speed of the prime mover engine and which has additional pressure created forces applied to the shiftable valve of the horsepower control valve to keep the engine running at a constant or nearly constant speed, thus keeping engine horsepower constant and at a maximum value.</p> |
