A VARIABLE DISPLACEMENT PUMP AND A METHOD FOR REGULATING THE PUMP

A variable displacement pump comprising a pumping piston (10), cylinder head (2); a rotating shaft (3); regulating means (4) of the displacement of the pump, said means in turn comprising: a structure (41) having a variable inclination; a fluid-dynamic actuator (42) for regulating an inclination of...

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Bibliographic Details
Main Author LETTINI, ANTONIO
Format Patent
LanguageEnglish
Published 31.05.2018
Subjects
BLASTING
HEATING
LIGHTING
MECHANICAL ENGINEERING
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
WEAPONS
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Summary:A variable displacement pump comprising a pumping piston (10), cylinder head (2); a rotating shaft (3); regulating means (4) of the displacement of the pump, said means in turn comprising: a structure (41) having a variable inclination; a fluid-dynamic actuator (42) for regulating an inclination of said structure (41); command means (43) for the actuator (42), which assume a non-equilibrium and an equilibrium position, said command means (43) in turn comprising: a sliding body (431) being able to take at least a first position in which it places a chamber (420) acting on said actuator (42) in communication with a first zone (51) at least initially having a pressure that is different from a pressure present in said chamber (420); a sliding element (432) with respect to the sliding body (431) for resetting said equilibrium configuration, said sliding element (432) being distinct from said actuator (42) and being mechanically actuated in consequence of a variation of an inclination of said structure (41).
Bibliography:Application Number: US201615575510