Methods and apparatus for decreasing combustor emissions with spray bar assembly
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United States of America Patent
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Apr 1, 2003
Grant Date -
N/A
app pub date -
Jun 28, 2000
filing date -
Jun 28, 2000
priority date (Note) -
Expired
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Abstract
A combustor for a gas turbine engine operates with high combustion efficiency, and low nitrous oxide emissions during engine operations. The combustor includes at least one trapped vortex cavity, a fuel delivery system including two fuel circuits, and a fuel spray bar assembly. A pilot fuel circuit supplies fuel to the trapped vortex cavity and a main fuel circuit supplies fuel to the combustor. The fuel spray bar assembly includes a spray bar and a heat shield. The spray bar is sized to fit within the heat shield. The heat shield includes aerodynamically-shaped upstream and downstream sides.
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