Power plants – Internal combustion engine with treatment or handling of... – Methods
Patent
1993-04-16
1995-05-30
Hart, Douglas
Power plants
Internal combustion engine with treatment or handling of...
Methods
60284, 60286, 60303, 422183, 423212, F01N 320
Patent
active
054191211
ABSTRACT:
A method of improving the performance of a pollutant abatement means, e.g., catalytic converter (16), used to purify engine exhaust gas streams and the like includes combusting a combustion mixture of air and a low ignition temperature fuel in the exhaust gas stream upstream of the catalytic converter (16) to oxidize carbon monoxide and unburned hydrocarbons, and/or to rapidly heat the catalytic converter to its operating temperature. Reaction conditions are maintained so as to cause the combustion mixture to ignite spontaneously. A control system may be used to regulate the supply of the combustion mixture in response to time lapse or temperature of the catalyst or both. The apparatus includes a fuel supply (18) and a fuel line (20) controlled by a valve (22) to deliver a low ignition temperature fuel into the exhaust gas discharge line (14) associated with the engine (12). An air pump (26) provides combustion air through an air line (28) into the exhaust gas discharge line (14). Optionally, a thermocouple (36) attached to the catalytic converter (16) signals a controller (38) to reduce or stop the flow of air and/or low ignition temperature fuel in response to the temperature of the catalytic converter (16).
REFERENCES:
patent: 3775064 (1973-11-01), Berger et al.
patent: 3779015 (1973-12-01), Maruoka
patent: 3791143 (1974-02-01), Keith et al.
patent: 4012905 (1977-03-01), Masaki
patent: 4106453 (1978-08-01), Burley
patent: 4131086 (1978-12-01), Noguchi et al.
patent: 4322387 (1982-03-01), Virk et al.
patent: 4349002 (1982-09-01), Allen
patent: 4359863 (1982-11-01), Virk et al.
patent: 4429675 (1984-02-01), Talbert
patent: 4503671 (1985-03-01), Smith
patent: 4509464 (1985-04-01), Hansen
patent: 4708118 (1987-11-01), Rawlings
patent: 4715349 (1987-12-01), Hibino et al.
Patent Abstracts of Japan, vol. 11, No. 82 (M-571) Mar. 12, 1987 & JP,A,61 237 812 (Sabo Osamu Oct. 23, 1987 "Exhaust Gas Purifier of Engine".
Otsuka et al, "A fuel cell for the partial oxidation . . . ambient temperatures", NATURE, vol. 345, Jun. 21, 1990, p. 697.
Tanabe, "Niobic Acid As An Unusual Solid Material", Materials Chemistry and Physics, 17 (1987) pp. 217-225.
Domen et al, "Overall Photodecomposition of water on . . . Niobiate Catalyst", Catalysts Today, 8 (1990) pp. 77-84.
Martir et al, "The Formation of Gas-Phase . . . Molybdate Catalysts", J. Am. Chem. Soc., 1981, 103, pp. 3728-3732.
Hanson, "Engine Emissions Prove Hard to Lower", Chem. & Eng. News, Jan. 7, 1991, p. 21.
Hino et al, "Synthesis of Solid Superacid W/ Strength of H.<-16.04.sup.1 ", J.C.S. Chem. Comm, 1980, pp. 851-852.
Burk Patrick L.
Dettling Joseph C.
Steger John J.
Sung Shiang
Engelhard Corporation
Hart Douglas
LandOfFree
Method and apparatus for reduction of pollutants emitted from au does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for reduction of pollutants emitted from au, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for reduction of pollutants emitted from au will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-354335