VARIABLE DISPLACEMENT VARIABLE PRESSURE VANE PUMP SYSTEM

A traditional variable displacement vane pump must be designed to provide maximum fluid pressure and thus experiences reduced energy efficiency when the system operating conditions do not necessitate such high requirements. A variable displacement variable pressure vane pump system is provided compr...

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Bibliographische Detailangaben
Hauptverfasser:	TANASUCA, CEZAR, SHULVER, DAVID R
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BLASTING CRANKCASE VENTILATING ENGINE PLANTS IN GENERAL ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING LUBRICATING LUBRICATING INTERNAL COMBUSTION ENGINES LUBRICATING OF MACHINES OR ENGINES IN GENERAL MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS STEAM ENGINES THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A traditional variable displacement vane pump must be designed to provide maximum fluid pressure and thus experiences reduced energy efficiency when the system operating conditions do not necessitate such high requirements. A variable displacement variable pressure vane pump system is provided comprising a first control mechanism, which can be a control chamber (68) directly acting on the control slider (36) or a control chamber (68) and control cylinder (44) which acts on the control slider (36) and a second control mechanism which is a control chamber (72) and control cylinder (44) which acts on the control slider (36). A control valve (76), operated by an engine control unit or other suitable control mechanism, selectively provides pressurized lubrication oil to the second control mechanism to allow the output of the pump system to more closely match the requirements of the mechanical system.