System and method for purging a fuel manifold of a gas turbine engine using a pump
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United States of America Patent
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Nov 1, 2022
Grant Date -
Nov 19, 2020
app pub date -
May 11, 2020
filing date -
May 15, 2019
priority date (Note) -
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Abstract
Methods and systems of operating a gas turbine engine in a low-power condition are provided. In one embodiment, the method includes supplying fuel to a combustor by supplying fuel to a first fuel manifolds and a second fuel manifold of the gas turbine engine. The method also includes, while supplying fuel to the combustor by supplying fuel to the first fuel manifold: stopping supplying fuel to the second fuel manifold; and using a pump to drive gas into the second fuel manifold to flush fuel in the second fuel manifold into the combustor and hinder coking in the second fuel manifold and associated fuel nozzles.
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