Power plants – Combustion products used as motive fluid – Combustion products generator
Patent
1982-07-20
1984-08-07
Croyle, Carlton R.
Power plants
Combustion products used as motive fluid
Combustion products generator
60746, 239424, 239432, F02C 722
Patent
active
044635680
ABSTRACT:
A dual fuel injector for a gas turbine engine is arranged to maintain pre-determined air fuel ratios in adjacent upstream and downstream opposite handed vortices and to reduce the deposition of carbon on the injector. The injector comprises a central duct, a deflecting member, a first radially directed outlet, and a shroud which defines an annular duct, and a second radially directed outlet. The ducts receive a supply of compressed air and the central duct receives gaseous fuel from an annular nozzle and the annular duct receives liquid fuel from a set of nozzles.
When the injector is operating on liquid fuel, the fuel and air mixture issues from the second outlet and compressed air flows from the first outlet and prevents migration of fuel between the two vortices, thereby maintaining a rich air fuel ratio in the upstream vortex which reduces the emissions of NOx. Also, the flow of air from the first outlet reduces the deposition of carbon from the liquid fuels on the deflecting member.
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patent: 4193260 (1980-03-01), Carlisle et al.
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patent: 4337618 (1982-07-01), Hughes et al.
patent: 4342198 (1982-08-01), Willis
Boyce Bernard W.
Griffin Arthur B.
Willis Jeffrey D.
Croyle Carlton R.
Rolls-Royce Limited
Simenauer Jeffrey A.
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