Variable jet mixer for improving the performance of a fixed displacement fuel pump

The invention includes a fuel delivery system (10) for a gas turbine engine in combination with an associated method and machine readable program. The system (10) includes a fixed displacement pump (20) having an inlet portion and a discharge portion, and a mixer (30) operatively associated with the...

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Bibliographische Detailangaben
Hauptverfasser:	DESAI, MIHIR C, GROCHOWSKI, KURT
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS GAS-TURBINE PLANTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BYUSING INERTIA OF FLUID TO BE PUMPED PUMPS FOR LIQUIDS OR ELASTIC FLUIDS SIPHONS WEAPONS
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Beschreibung
Zusammenfassung:	The invention includes a fuel delivery system (10) for a gas turbine engine in combination with an associated method and machine readable program. The system (10) includes a fixed displacement pump (20) having an inlet portion and a discharge portion, and a mixer (30) operatively associated with the pump (20). The mixer (30) includes a first inlet (28) in fluid communication with the discharge portion of the pump for receiving a relatively high pressure bypass flow (26) from the pump, a second inlet (34) in fluid communication with a fuel source for receiving a relatively low pressure fuel flow (32) from the fuel source, a mixing chamber (44) within the mixer (30) wherein the relatively high pressure bypass flow (26) from the pump (20) mixes with the relatively low pressure flow (32) from the fuel source to generate an energized fuel mixture (22a), and a discharge in fluid communication with the mixing chamber for directing the energized fuel mixture to the inlet of the pump.