Fuel injector with increased feed area
OwnerMatthew D. Tyler, Jay J. Qian +3inventors
InventorsMatthew D. Tyler, Jay J. Qian, Bryan T. Runkle, John H. Gaag, Kenneth Court
Life of this patent
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Abstract
Provided is a nozzle tip assembly having at least one tube member housed within a tubular shell, the tube member having a first passage connecting the first outlet port to the first inlet port and a second passage connecting the second outlet port to the second inlet port. The configuration of the tube member allows the tubular shell to be sized such that separation of fluid flowing around the tubular shell is reduced, thereby reducing the amount of aerodynamic wake that occurs in an injector.
Claims20
A nozzle tip assembly for a fluid injector, comprising:
- a supply connector having first and second supply passages and first and second outlet ports to which the first and second supply passages are respectively connected;
- a nozzle assembly having first and second nozzle flow passages extending respectively from first and second inlet ports to respective nozzle outlets and a feed arm having an outer tubular shell connecting the nozzle assembly to the supply connector;
- and
- at least one tube member housed within the tubular shell and spaced apart from the shell, the at least one tube member having a first passage connecting the first outlet port to the first inlet port and a second passage connecting the second outlet port to the second inlet port.
A nozzle tip assembly for a fluid injector, comprising:
- a nozzle assembly having at least one nozzle flow passage extending from an inlet port to a nozzle outlet and a feed arm having an outer tubular shell connecting the nozzle assembly to an adaptor;
- and
- at least one tube member housed within the tubular shell and spaced apart from the shell, the at least one tube member including first and second end portions, an intermediate portion extending between the first and second end portions, and at least one passage fluidly connecting the nozzle flow passage to a fluid delivery device;
- wherein each end portion has a wall thickness greater than a wall thickness of the intermediate portion.
A nozzle assembly for a fluid injector, comprising:
- a body having an upstream end and a downstream end and a length extending from the upstream end to the downstream end;
- a feed arm extending from the body, the feed arm having an exterior surface and a width perpendicular to the length of the body;
- and
- at least one radially outwardly projecting fin extending from the body downstream of the feed arm;
- wherein an upstream end of the fin is spaced along the length of the body from a downstream end of the exterior surface of the feed arm a distance d that is at least four tenths a width of the feed arm.
Dependencies are inferred from the claim text.