The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 17, 2007
Filed:
Aug. 31, 2005
Kelly J. Benson, Fort Collins, CO (US);
Luigi P. Tozzi, Fort Collins, CO (US);
Ed Van Dyne, Loveland, CO (US);
Jeff B. Barrett, Bolton, MA (US);
Kelly J. Benson, Fort Collins, CO (US);
Luigi P. Tozzi, Fort Collins, CO (US);
Ed Van Dyne, Loveland, CO (US);
Jeff B. Barrett, Bolton, MA (US);
Woodward Governor Company, Fort Collins, CO (US);
Abstract
An apparatus and method to sense the onset of combustion stability is presented. An electrode is positioned in a turbine combustion chamber such that the electrode is exposed to gases in the combustion chamber. The electrode may be integrated with an igniter. A control module applies a voltage potential to the electrode and detects a combustion ionization signal and determines if there is an oscillation in the combustion ionization signal indicative of the occurrence of combustion stability or the onset of combustion instability. The control module broadcasts a notice if the parameters indicate the combustion process is at the onset of combustion instability or broadcasts an alarm signal if the parameters indicate the combustion process is instable. Combustion parameters are adjusted to drive the combustion process towards stability.