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, 2001
Filed:
Apr. 03, 1998
Hisham S Alkabie, Sudbrooke, GB;
Abstract
A fuel-injection arrangement for a gas-turbine engine has distributed longitudinally along a pre-chamber portion of the combustion chamber a series of fuel-outlet holes configured such that a radial component of momentum of the fuel exiting the holes varies along the series of holes. To achieve this the holes are preferably differently sized along the trailing edge. Advantageously, the holes at the very upstream end of the pre-chamber portion have the smallest diameter, the size thereafter progressively increasing along the series. The size distribution may vary either continuously, or in stepped fashion. The direction of exit of the fuel from the outlets is preferably radial towards the central axis of the swirler. The variable-sized holes may be employed in a swirler upstream the main combustion chamber region and/or in an intermediate region between the swirler and the main chamber region.