METHOD OF PUMP CAPACITY CONTROL (VERSIONS) Russian patent published in 2002 - IPC

FIELD: hydraulic machinery manufacture, applicable in hydraulic systems of flying vehicles. SUBSTANCE: method is realized either by additional reduction of resistance connecting the line of control pressure with pressure line the more so the less is pump capacity, or by increase of resistance connecting the line of control pressure with line of low pressure the more so the less is pump capacity. Besides, both resistances are varied in similar way to provide in each case for pressure in pressure line the less, the less is pump capacity or constant within entire range of capacity control. Invention allows reduction of pressure, capacity nonuniformity, range of high-frequency pressure fluctuations and power consumption under conditions of pump operation with low capacities and in this way to increase service life and reliability of hydraulic system of flying vehicle. EFFECT: higher efficiency. 3 cl, 2 dwg