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United States Patent | 10,732,147 |
Deivasigamani , et al. | August 4, 2020 |
A means of detecting the in-situ fuel-to-air-ratio (FAR) in a combustor or flame zone using a Fourier-based flame ionization probe is presented. The use of multiple excitation frequencies and its detection at certain frequencies or combinations of harmonics of those excitation frequencies, namely, the inter-modulation distortion, provides a novel means of extracting a high signal-to-noise ratio (SNR) FAR measurement in a combustor.
Document Identifier | Publication Date | |
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US 20190242850 A1 | Aug 8, 2019 | |
Current U.S. Class: | 1/1 |
Current CPC Class: | G01N 27/626 (20130101) |
Current International Class: | G01N 27/62 (20060101) |
5275712 | January 1994 | Hetrick |
2004/0123653 | July 2004 | Benson |
2007/0107417 | May 2007 | Surnilla |
2009/0180939 | July 2009 | Hagen |
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