Fuel injector for combustion engine and staged fuel delivery method

A fuel injector (26) for a combustion engine (10) includes an injector head (28) including a nozzle (44), a premixer (48), and a distributor (70) structured to distribute a plurality of different fuels to different sets of fueling orifices (58, 60, 66) in the premixer (48). A pilot assembly (103) of...

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Bibliographische Detailangaben
Hauptverfasser:	Rasoul Paydar, Raymond Alvarez, Rajeshriben Patel, Ram Srinivasan, James Scott Piper
Format:	Patent
Sprache:	eng
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING COMBUSTION APPARATUS COMBUSTION ENGINES COMBUSTION PROCESSES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS GAS-TURBINE PLANTS GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING WEAPONS
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Beschreibung
Zusammenfassung:	A fuel injector (26) for a combustion engine (10) includes an injector head (28) including a nozzle (44), a premixer (48), and a distributor (70) structured to distribute a plurality of different fuels to different sets of fueling orifices (58, 60, 66) in the premixer (48). A pilot assembly (103) of the fuel injector (26) is coupled to the premixer (48) and includes a first fueling passage (110) for a first fuel and a second fueling passage (111) for a second fuel. Multiple sets of fueling orifices (58, 60, 66) are positioned within the fuel injector (26), the fueling orifice sets (58, 60, 66) being selectively connectable to a plurality of different fuel supplies (20, 22, 24), and both located and sized so as to accommodate a wide range of flow rates to enable a combustion engine (10 coupled with the fuel injector (26) to operate on fuels having a range of Wobbe indices and compositions.