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. 29, 2001
Filed:
Apr. 30, 1999
Philip D Butler, Derby, GB;
Rolls-Royce plc, London, GB;
Abstract
A gas turbine engine (,) combustion chamber (,) comprises a primary combustion zone (,) and a secondary combustion zone(,) in which lean mixtures of fuel and air are burned. Air is supplied to a first mixing duct (,) through a swirler (,). Air is supplied to an additional mixing duct (,) through a swirler (,) and hydrocarbon fuel is supplied to the additional mixing duct (,) through a swirler (,). The hydrocarbon fuel and air is mixed and reacted in a catalytic partial oxidation reaction zone (,) which produces a product gas comprising a mixture of hydrogen, carbon monoxide, carbon dioxide, water and unreacted hydrocarbon fuel. Additional hydrocarbon fuel is supplied from apertures (,) and is mixed with the product gas in a mixing chamber (,) and this mixture is supplied to the first mixing duct (,) and mixes with the air. The first mixing duct (,) supplies a lean mixture of fuel into the primary combustion zone (,). The arrangement enables the combustion chamber (,) to operate with more stability or at leaner fuel to air ratios.