Lean prechamber outflow combustor with continuous pilot flow

Details Lean prechamber outflow combustor with continuous pilot flow Lean prechamber outflow combustor with continuous pilot flow

1979-09-28

1981-11-24

Garrett, Robert E.

Power plants

Combustion products used as motive fluid

Combustion products generator

60743, 60748, 60 3982P, F23R 314, F23R 330, F23R 334

Patent

active

043016561

ABSTRACT:
A combustor assembly for an automotive gas turbine engine includes a continuously ignited, pilot flame tube supported on a combustor dome immediately downstream of a prevaporization prechamber with a fuel and air swirler. The pilot flame tube has an air swirler and fuel nozzle supported on an interior bulkhead and is associated with a fuel system that maintains a shielded pilot flame to prevent flame-out of flammable air/fuel mixtures in the main reaction chamber of the combustor; the fuel system supplies greater fuel to the pilot flame tube at engine fuel start and stop to produce an extended flame plume that extends into the reaction chamber to burn residuum of fuel when the air/fuel ratio in the main reaction chamber mixture is below the flammability limit of the fuel.

REFERENCES:
patent: 3954389 (1976-05-01), Szetela
patent: 4012904 (1977-03-01), Nagle
patent: 4141213 (1979-02-01), Ross
patent: 4192139 (1980-03-01), Buchheim

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