Device for detecting combustion conditions in combustors Patent #: 5024055
ApplicationNo. 878933 filed on 05/05/1992
US Classes:60/773, Having power output control60/39.281, Fuel60/39.5With exhaust treatment
ExaminersPrimary: Casaregola, Louis J.
Attorney, Agent or Firm
Foreign Patent References
International ClassF02C 009/28
AbstractCombustion in a gas turbine is controlled through use of flame spectroscopy in order to achieve low NOx emissions in the exhaust. By monitoring the combustion flame in the turbine to determine intensity of non-infrared spectral lines, and dynamically adjusting the fuel/air ratio of the fuel mixture such that this intensity remains below a predetermined level associated with a desired low level of NOx emissions, the engine produces significantly reduced NOx emissions in its exhaust but at a sufficiently high combustion flame temperature to avoid any undue risk of flame-out, thereby assuring stable, safe and reliable operation.