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Combustor for a low-emissions gas turbine engine

United States Patent

August 8, 2000
View the Complete Patent at the US Patent & Trademark Office
Many government entities regulated emission from gas turbine engines including CO. CO production is generally reduced when CO reacts with excess oxygen at elevated temperatures to form CO2. Many manufactures use film cooling of a combustor liner adjacent to a combustion zone to increase durability of the combustion liner. Film cooling quenches reactions of CO with excess oxygen to form CO2. Cooling the combustor liner on a cold side (backside) away from the combustion zone reduces quenching. Furthermore, placing a plurality of concavities on the cold side enhances the cooling of the combustor liner. Concavities result in very little pressure reduction such that air used to cool the combustor liner may also be used in the combustion zone. An expandable combustor housing maintains a predetermined distance between the combustor housing and combustor liner.
Glezer; Boris (Del Mar, CA), Greenwood; Stuart A. (San Diego, CA), Dutta; Partha (San Diego, CA), Moon; Hee-Koo (San Diego, CA)
Caterpillar Inc. (Peoria, IL)
09/ 093,375
June 8, 1998
"The Government of the United States of America has rights in this invention pursuant to Contract No. DE-AC02-92CE40960 awarded by the U.S. Department of Energy".