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:
Feb. 01, 2005
Filed:
Sep. 23, 2002
David D. North, Palm Beach Gardens, FL (US);
Arthur J. Harris, Jr., Orlando, FL (US);
Hank Reid, Orlando, FL (US);
Jesse Eng, Jupiter, FL (US);
David D. North, Palm Beach Gardens, FL (US);
Arthur J. Harris, Jr., Orlando, FL (US);
Hank Reid, Orlando, FL (US);
Jesse Eng, Jupiter, FL (US);
Siemens Westinghouse Power Corporation, Orlando, FL (US);
Abstract
A combustor () for a gas turbine engine is provided with a premix pilot fuel stage () in order to reduce the emission of oxides of nitrogen from the engine. An in-service engine may be modified to add the premix pilot fuel stage by delivering premix pilot fuel to a ring manifold () for tip-feeding a premix pilot fuel outlet member such as a swirler vane () or fuel peg (). In this manner, complex and expensive components such as the top hat (), support housing () and diffusion pilot burner assembly () may be used without modification. Thermal stresses caused by the differential cooling of the ring manifold by the premix pilot fuel () are reduced by a heat shield () installed within the manifold.