Stephen J Rutter

US Patent:

48359629, Jun 6, 1989

Filed:

Jul 11, 1986

Appl. No.:

6/884737

Inventors:

Stephen D. Rutter - Stratford CT

Assignee:

Avco Corporation - Providence RI

International Classification:

F02C 100

US Classification:

60737

Abstract:

An apparatus is provided for use in a gas turbine engine to achieve an efficient atomization of fuel over a wide range of fuel flow rates and engine operating conditions. The apparatus comprises a valve to selectively block the flow of fuel directed to the fuel injector of the engine during the start-up conditions of the engine. The valve, however, will permit the fuel to flow through a mixing apparatus during start-up conditions. The mixing apparatus includes a nozzle into which the fuel is directed. The mixing apparatus also is in communication with a supply of air. The pressure drop created as the fuel passes through the nozzle will draw air into the apparatus and effect mixing of fuel and air. Subsequent passage of the fuel/air mixture through the relatively large passages of the conventional fuel injector will effect good atomization even at low fuel flow rates associated with start-up conditions.