| 摘要 |
<p>PURPOSE:To make an apparatus compact and to stabilize a power generation by driving a variable capacity oil-hydraulic motor by means of an oil-hydraulic pump and by electronically controlling the capacity of the oil hydraulic motor and the excitation current of an AC generator. CONSTITUTION:A variable capacity oil-hydraulic motor 16 is driven by an oil pressure generated by the rotation of an engine 11. The oil-hydraulic motor 16 drives an AC generator 17 and generates AC power. For example, a detection signal corresponding to the number of revolutions of the engine 11 is supplied to an electronic control unit(ECU) 20. In the ECU 20, thus, the number of revolutions of the oil hydraulic motor 16 is held constant in a state where the output oil quantity of the oil-hydraulic pump decreases as the number of revolutions of the engine 11 lowers. At the same time, the excitation current of the AC generator 17 is controlled so that a consumption torque decreases and the number of revolutions of the AC generator 17 is made constant. Consequently, it is possible to stabilize the generation of AC power also in an idle state, etc., without making the oil-hydraulic pump especially large.</p> |
