FIELD: engines and pumps.
SUBSTANCE: invention relates to a method for optimised functioning as to power of a motor-driven pump in a hydraulic system with at least one self-adjustable consumer. Predetermined head (Hsoll) of the pump is controlled depending on its volumetric flow rate (Q) according to the controlled basic characteristic curve, which is determined by means of pre-determined specified value (HK) of the characteristic curve. Volumetric flow rate (Q) pumped with the pump is determined, and its trend (δQ) is determined, and depending on volumetric flow rate (Q) and/or its trend (δQ) the specified value of characteristic curve (HK) is increased when volumetric flow rate (Q) is increased, or decreased when volumetric flow rate (Q) is decreased.
EFFECT: invention is aimed at optimum matching of hydraulic power of the pump with its corresponding working point in a hydraulic system.
21 cl, 13 dwg
