초록 ▼

In order to enhance fuel injection efficiency, and particularly to atomize low fuel flows at high velocity with low fuel pressure, a fuel injection system 24 for a combustor 22 of a turbine engine 20 has an air blast tube 48 and a fuel supply tube 76. The air blast tube 48 is mounted at an acute ang

In order to enhance fuel injection efficiency, and particularly to atomize low fuel flows at high velocity with low fuel pressure, a fuel injection system 24 for a combustor 22 of a turbine engine 20 has an air blast tube 48 and a fuel supply tube 76. The air blast tube 48 is mounted at an acute angle relative to a wall 26 of the combustor 22 and has a first end 50 in communication with the combustor 22 and a second, enlarged end 52 disposed at an acute angle to an axis 54 of the air blast tube 48 in communication with a source of compressed air externally of the wall 26 of the combustor 22. The air blast tube 48 is operable to deliver compressed air from the source into the combustor 22. The fuel supply tube 76 delivers fuel through a fuel supply orifice 58 to a point at or near the first end 50 of the air blast tube 48 and has a first end 60 in communication with the combustor 22 through the fuel supply orifice 58 and a second end 62 in communication with a source of fuel externally of the wall 26 of the combustor 22. With this arrangement, the fuel supply tube 76 extends to a point communicating internally with the air blast tube 48 but adjacent a discharge opening 64 of the air blast tube 48 to produce an enhanced atomized fuel/air mixture thereby.

대표청구항 ▼

A fuel injection system for a combustor of a turbine engine, comprising: an air blast tube mounted at an acute angle relative to a wall of said combustor, said air blast tube having a first end in communication with said combustor and a second, enlarged end disposed at an acute angle to an axis of s

A fuel injection system for a combustor of a turbine engine, comprising: an air blast tube mounted at an acute angle relative to a wall of said combustor, said air blast tube having a first end in communication with said combustor and a second, enlarged end disposed at an acute angle to an axis of said air blast tube and in communication with a source of compressed air externally of said wall of said combustor, said air blast tube being operable to deliver compressed air from said source into said combustor; and fuel supply means including a fuel supply tube for delivering fuel through a fuel supply orifice positioned at a point adjacent said first end of said air blast tube, at least a portion of said fuel supply tube being positioned within and extending through at least a portion of said air blast tube such that said fuel supply tube has a first end defining said fuel supply orifice positioned substantially at said first end of said air blast tube so as to be in communication with said combustor through said fuel supply orifice and said fuel supply tube also having a second end in communication with a source of fuel externally of said wall of said combustor, said fuel supply means thereby extending to a point communicating internally with said air blast tube but adjacent a discharge opening of said air blast tube at said first end thereof.