Importance

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Abstract

A recirculation system for a gas turbine engine includes a mixing chamber including an inlet end that receives exhaust gases containing unburnt fuel and an outlet end, and at least one recirculation conduit including an inlet opening in fluid communication with the mixing chamber proximate to the outlet end and an outlet opening in fluid communication with the mixing chamber proximate to the inlet end. The recirculation system further includes a fan. The fan is operable to receive at least one of a stream of substantially fuel-free exhaust gases present and a stream of fresh air within the at least one recirculation conduit and direct at least one of a portion of the stream of substantially fuel-free exhaust gases and a portion of the stream of fresh air into the mixing chamber to reduce an amount of unburnt fuel in the exhaust gases.

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First Claim