Variable displacement pump and method for regulating such pump

Abstract

Variable displacement pump comprising: at least a pumping piston (10) for pumping the fluid; at least a sliding seat (2) along which a stroke of the piston (10) takes place, wherein a sliding of the piston (10) along the seat (2) corresponds to a rotation of said seat (2); and a system (400) for regulating the torque absorbed by the pump, in turn comprising a means (4) for regulating a displacement of the pump (1) as a function of an electrical signal. The regulating means (4) in turn comprises: a structure (41) with variable inclination for regulating the stroke length of the pumping piston (10) and thus the displacement of the pump (1); a fluid-dynamic actuator (42) for regulating the inclination of said structure (41); and a control means (43) for controlling the actuator (42) as a function of an electrical signal.

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