| US 7,481,061 B2 | ||
| Fuel control for starting a gas turbine engine | ||
| Satish B. Gadde, Orlando, Fla. (US); Damien G. Teehan, St. Cloud, Fla. (US); Jatinder P. Singh, Orlando, Fla. (US); Gary Hildebrandt, Orlando, Fla. (US); Danny W. Kozachuk, Oviedo, Fla. (US); and Joseph L. Kollar, Orlando, Fla. (US) | ||
| Assigned to Siemens Energy, Inc., Orlando, Fla. (US) | ||
| Filed on Nov. 10, 2005, as Appl. No. 11/272,226. | ||
| Prior Publication US 2007/0101724 A1, May 10, 2007 | ||
| Int. Cl. F02C 7/26 (2006.01) | ||
| U.S. Cl. 60—778 [60/790] | 13 Claims |
| 1. A method of controlling fuel flow to a combustor of a gas turbine engine during startup of the engine, the method comprising:
determining a relationship between Cv and valve position for a flow control valve in a fuel supply to the combustor as a function of at least one parameter of fuel
in the fuel supply;
before initiating a pop flow of the fuel to the combustor, determining a value of the at least one parameter of the fuel;
calculating a first actual Cv value for the flow control valve at a target pop flow rate using the determined value of the at least one parameter;
positioning the flow control valve to a first position corresponding to the first actual Cv value based upon the determined relationship between Cv and valve position; and
initiating the pop flow of fuel to the combustor through the flow control valve.
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