| 摘要 |
PURPOSE:To prevent engine output from dropping in a way of making full use of a torque rise in the engine, by installing a control unit controlling the discharge of a variable displacement pump under the specified condition of an engine speed. CONSTITUTION:An engine speed is found with a function generator 51, and the desired engine speed is found with a function generator 52. Only in case a deviation in these values is minus, it is differentiated by a differentiator 53, and integrated by an integrator 54 which performs integration for duration from before 30-150sec of operation starting time up to the operation starting time. The discharge of a variable displacement pump 7 is controlled on the basis of the added value of an adder 59. Thus, a torque rise in an engine is effectively utilizable and, what is more, a drop in engine output also is preventable. |
