Fuel control system for gas turbine engines
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United States of America Patent
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Nov 14, 2006
Issued Date -
N/A
app pub date -
Oct 28, 2003
filing date -
Nov 16, 2001
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Abstract
Fuel control systems for use with a gas turbine engines which accounts for real-time thermodynamic engine effects when attempting to match or track the NDOT.sub.Actual rate to the NDOT.sub.Demand rate. The fuel control system includes a mechanism for measuring several engine operating parameters and a mechanism for determining an initial engine fuel demand based on the measured engine operating parameters. The control system further includes a mechanism for estimating, during engine operation and based on the measured operating parameters, the amount of heat transferred between fuel combustion gases and the engine metal and estimating an effective fuel flow adjustment based therefrom. The control system disclosed herein also includes a mechanism for determining a final engine fuel demand based on the initial predicted engine fuel demand and the estimated effective fuel flow adjustment.
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