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:
May. 11, 2004
Filed:
May. 01, 2002
Rolls-Royce plc, London, GB;
Abstract
A three-stage lean burn combustion chamber ( ) comprises a primary combustion zone ( ), a secondary combustion zone ( ) and a tertiary combustion zone ( ). Each of the combustion zones ( ) is supplied with premixed fuel and air by respective fuel and air mixing ducts ( ). The fuel and air mixing ducts ( ) have a plurality of air injection slots ( ) spaced apart transversely to the direction of flow through the fuel and air mixing ducts ( ). The air injection slots ( ) extend in the direction of flow through the fuel and air mixing ducts ( ) to the reduce the magnitude of the fluctuations in the fuel to air ratio of the fuel and air mixture supplied into the at least one combustion zone ( ). This reduces the generation of harmful vibrations in the combustion chamber ( ).