Active thermal protection for fuel injectors

Details Active thermal protection for fuel injectors Active thermal protection for fuel injectors

F - Mech Eng,Light,Heat,Weapons

02

M

F02M 53/04 (2006.01) F02M 51/06 (2006.01) F02M 61/16 (2006.01) F02M 61/18 (2006.01)

Patent

CA 2737650

A fuel injector and turbine engine incorporating the fuel injector are provided. The fuel injector includes an active cooling system that insulates fuel flowing through the fuel injector from heat energy within the turbine engine. The cooling system includes a cooling air passage that includes an inlet and an outlet. The inlet and outlet are in fluid communication with the interior of an engine case of the turbine engine. The inlet is at a higher air pressure location than the outlet such that air is siphoned through the cooling air passage. A portion of the cooling air passage includes a heat exchanger for extracting heat energy from the cooling air. The cooling air passes through the fuel injector after it has passed through the heat exchanger. The heat exchanger is positioned external to the engine case and in thermal communication with the ambient.

Linvention concerne un injecteur de carburant et un moteur turbine intégrant un injecteur de carburant. Ledit injecteur de carburant comprend un système de refroidissement actif qui isole le carburant sécoulant via linjecteur de carburant de lénergie thermique à lintérieur du moteur turbine. Le système de refroidissement comprend un passage dair de refroidissement pourvu dune entrée et dune sortie. Lentrée et la sortie sont en communication fluidique avec lintérieur du carter de moteur turbine. Lentrée se trouve à un emplacement de pression dair plus élevé que celui de la sortie de sorte que lair est siphonné via le passage dair de refroidissement. Une partie du passage dair de refroidissement comprend un échangeur de chaleur pour extraire lénergie thermique de lair de refroidissement. Léchangeur de chaleur est positionné à lextérieur du carter de moteur et en communication thermique avec lair ambiant.

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