Gas turbine engine with recirculating bleed

Details Gas turbine engine with recirculating bleed Gas turbine engine with recirculating bleed

1976-06-14

1978-04-11

Garrett, Robert E.

Power plants

Combustion products used as motive fluid

With exhaust treatment

60226R, F02C 300

Patent

active

040831817

ABSTRACT:
A method of reducing carbon monoxide and unburned hydrocarbon emissions in a gas turbine engine by bleeding hot air from the engine cycle and introducing it back into the engine upstream of the bleed location and upstream of the combustor inlet. As this hot inlet air is recycled, the combustor inlet temperature rises rapidly at a constant engine thrust level. In most combustors, this will reduce carbon monoxide and unburned hydrocarbon emissions significantly. The preferred locations for hot air extraction are at the compressor discharge or from within the turbine, whereas the preferred re-entry location is at the compressor inlet.

REFERENCES:
patent: 2404275 (1946-07-01), Clark et al.
patent: 2599470 (1952-06-01), Meyer
patent: 2863282 (1958-12-01), Torell
patent: 2906092 (1959-09-01), Haltenberger
patent: 3123283 (1964-03-01), Leis
patent: 3754393 (1973-08-01), Handa
patent: 3785145 (1974-01-01), Amann
patent: 3792581 (1974-02-01), Handa
patent: 3830058 (1974-08-01), Ainsworth
patent: 3908362 (1975-09-01), Szydlowski
patent: 3927958 (1975-02-01), Quinn

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