Reduced coking of fuel nozzles

Mancini, A A; Sager, J W; Kobish, T R

Title: Reduced coking of fuel nozzles

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Abstract

This patent describes a fuel nozzle useful for a gas turbine engine and having a nozzle face, the combination of fuel supply means on the nozzle, the fuel supply means including an annular fuel discharge body converging in a downstream direction toward a longitudinal central axis of the nozzle and terminating in a downstream fuel discharge orifice substantially on the central axis for discharging fuel from the orifice for mixing with air downstream of the nozzle face, air supply means on the nozzle for discharging air from the nozzle face, and means on the nozzle around the fuel discharge body cooperating with the air supply means for controllably discharging sufficient air flow with locally reduced swirl strength over the fuel discharge body to establish a recirculation zone spaced away from the nozzle face downstream thereof a sufficient distance to substantially reduce coking on the nozzle face.

Inventors:: Mancini, A A; Sager, J W; Kobish, T R

Publication Date:: Tue Jan 17 00:00:00 EST 1989

OSTI Identifier:: 6239742

Patent Number(s):: US 4798330

Assignee:: Fuel Systems Textron Inc., Zeeland, MI

Resource Type:: Patent

Resource Relation:: Patent File Date: Filed date 14 Feb 1986

Country of Publication:: United States

Language:: English

Subject:: 33 ADVANCED PROPULSION SYSTEMS; FUEL SYSTEMS; NOZZLES; GAS TURBINE ENGINES; SCALE CONTROL; AIR FLOW; DEPOSITS; DESIGN; FLOW REGULATORS; CONTROL; CONTROL EQUIPMENT; ENGINES; EQUIPMENT; FLUID FLOW; GAS FLOW; HEAT ENGINES; INTERNAL COMBUSTION ENGINES; 330103* - Internal Combustion Engines- Turbine

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                    Mancini, A A, Sager, J W, and Kobish, T R. Reduced coking of fuel nozzles.  United States: N. p., 1989. 
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                    Mancini, A A, Sager, J W, & Kobish, T R. Reduced coking of fuel nozzles.  United States.

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                    Mancini, A A, Sager, J W, and Kobish, T R. 1989.  
        "Reduced coking of fuel nozzles".  United States.

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@article{osti_6239742,

  title        = {Reduced coking of fuel nozzles},

  author       = {Mancini, A A and Sager, J W and Kobish, T R},

  abstractNote = {This patent describes a fuel nozzle useful for a gas turbine engine and having a nozzle face, the combination of fuel supply means on the nozzle, the fuel supply means including an annular fuel discharge body converging in a downstream direction toward a longitudinal central axis of the nozzle and terminating in a downstream fuel discharge orifice substantially on the central axis for discharging fuel from the orifice for mixing with air downstream of the nozzle face, air supply means on the nozzle for discharging air from the nozzle face, and means on the nozzle around the fuel discharge body cooperating with the air supply means for controllably discharging sufficient air flow with locally reduced swirl strength over the fuel discharge body to establish a recirculation zone spaced away from the nozzle face downstream thereof a sufficient distance to substantially reduce coking on the nozzle face.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/6239742},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Jan 17 00:00:00 EST 1989},

  month        = {Tue Jan 17 00:00:00 EST 1989}

}

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