Power plants – Internal combustion engine with treatment or handling of... – Methods
Patent
1975-01-03
1976-06-08
Hart, Douglas
Power plants
Internal combustion engine with treatment or handling of...
Methods
60276, 60278, 60285, 60290, 60301, F02B 7510
Patent
active
039614778
ABSTRACT:
For detoxicating the exhaust gases of an internal combustion engine an in-series arrangement of a first reactor and an oxidizing reactor is provided with the exhaust line of the engine along with an oxygen measuring element and structure for producing two additional air streams fed to the exhaust line. The first reactor reduces the nitrogen oxides in the exhaust gas and the second or oxidizing reactor oxidizes the hydrocarbons and the carbon monoxide in the exhaust gas. The oxygen measuring element is mounted to the exhaust line and regulates the mass ratio of air to fuel on the suction side of the engine. The first additional air stream is injected into the exhaust pipe in the flow direction upstream of the oxygen measuring element. The quantity of this air stream is regulated and corresponds to the fuel throughput of the engine so that when the oxygen measuring element measures a stoichiometric mixture (.lambda.=1) a slightly rich air-fuel mixture (.lambda. .apprxeq.0.98-0.99) is supplied to the engine.
REFERENCES:
patent: 3662540 (1972-05-01), Murphey
patent: 3827237 (1974-08-01), Linder
patent: 3832848 (1974-09-01), Scholl
Grieshaber Hermann
Wessel Wolf
Greigg Edwin E.
Hart Douglas
Robert Bosch G.m.b.H.
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