FUEL FLOW CONTROL SYSTEM AND METHOD FOR ENGINE START

Systems and methods for controlling fuel flow to an engine (10) during start are provided. Fuel is caused to be injected into a combustor (16) of the engine (10) according to a first fuel schedule defining a minimum fuel flow limit required to achieve light-off of the engine (10), the minimum fuel f...

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Bibliographische Detailangaben
Hauptverfasser:	DES ROCHES-DIONNE, Nicolas, LOPEZ, Simon, LAMARRE, Sylvain
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 WEAPONS
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Beschreibung
Zusammenfassung:	Systems and methods for controlling fuel flow to an engine (10) during start are provided. Fuel is caused to be injected into a combustor (16) of the engine (10) according to a first fuel schedule defining a minimum fuel flow limit required to achieve light-off of the engine (10), the minimum fuel flow limit set at an initial value. Following light-off of the engine (10), at least one operating parameter of the engine (10) is monitored. Based on the at least one operating parameter, occurrence of flameout in the engine (10) is detected. In response to detecting occurrence of flameout in the engine (10), the minimum fuel flow limit is increased from the initial value to a first value to obtain an adjusted fuel schedule, and fuel is caused to be injected into the combustor (16) according to the adjusted fuel schedule.