Power plants – Combustion products used as motive fluid – Combustion products generator
Patent
1992-10-06
1995-04-11
Thorpe, Timothy S.
Power plants
Combustion products used as motive fluid
Combustion products generator
F02C 7264
Patent
active
054047129
ABSTRACT:
Method and apparatus for igniting an air/fuel spray (26) comprised of fuel droplets. The apparatus includes a coherent optical source (12) for introducing at least one pulse of coherent radiation into the air/fuel spray. The pulse generates free electrons and initiates a development of a plasma within the air/fuel spray. The coherent source maintains the pulse of coherent radiation and pumps the developing plasma to higher energies. The pulse is terminated at a time after the plasma has reached a predetermined energy and before ignition of the air/fuel spray. The non-linear ignition system of the invention employs a gas/vapor interface region at a fuel droplet surface and an electric field that extends from and exists outside of a fuel droplet. Free electrons are accelerated to higher energies by the electric field surrounding the fuel droplet. The accelerated electrons initiate a breakdown near adjacent fuel droplets and the liberation of further free electrons. In a short period of time an avalanche process occurs that creates a high density of free electrons and ions which results in the formation of a plasma.
REFERENCES:
patent: 3258910 (1966-07-01), Seymour
patent: 3473879 (1969-10-01), Berberich
patent: 3861371 (1975-01-01), Gamell
patent: 4035131 (1977-07-01), Cerkanowicz
patent: 4302933 (1981-12-01), Smith
patent: 4314530 (1982-02-01), Giacchetti
patent: 4343687 (1982-08-01), Ronn
patent: 4416226 (1983-11-01), Nishida et al.
patent: 4434753 (1984-03-01), Mukainakano et al.
patent: 4556020 (1985-12-01), Hickling
patent: 4726336 (1988-02-01), Hoppie et al.
patent: 4947640 (1990-08-01), Few et al.
Copy of Notification of Trans. of In't Search Report dated 5 Jan. 1994, for counterpart, foreign filed patent application No. PCT/US93/09633.
Brad E. Forch et al., Technical Report BRL-TR-27409, U.S. Army Ballistic Research Laboratory, entitled "Photochemical Ignition Studies II . . . "Jun. 1986.
Andrezik W. Miziolek et al. Technical Report BRL-TR-2644, U.S. Army Ballistic Research Laboratory, "Photochemical Ignition Studies. I. Laser Ignition of Flowing Premixed Gases", Feb., 1985.
Lavid et al., "Photochemical Ignition of Premixed Hydrogen/Oxidizer Mixtures With Excimer Lasers".
M. Lavid, "Photochemical Ignition of Gaseous Mixtures", pp. 97-100 (no date).
E. Dabora, "Laser Ignition of Liquid Fuel Drops", pp. 119-133. 7th ICOGER, Gottingen, Fed. Rep. of Germany, Aug. 20-24, 1979.
Lavid et al., "Infrared Multiphoton Ignition of Alcohols", pp. 69-1-69-4. Chemical and Physical Processes in Combustion 1986 (no month provided).
M. Lavid, "Radiative Augmented Combustion", Annual Technical Report AFOSR-TR Aug. 1984.
M. Lavid et al., "Infrared multiphoton Ignition and Enhancement of Combustion", Final Report, NSF Grant No. CBT-8560667 (1986) Aug.
M. Lavid, "Radiation/Catalytic Augmented Combustion", Interim Scientific Report, Contract No. F49620-C-0028, 1983, May.
Few Jimmy D.
Lewis James W. L.
Thorpe Timothy S.
University of Tennessee Research Corporation
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