Exhaust gas purifying apparatus

Details Exhaust gas purifying apparatus Exhaust gas purifying apparatus

1973-01-11

1976-03-23

Wolk, Morris O.

Chemistry: physical processes

Physical processes

Crystallization

23288F, 23288FB, 60284, 60286, 60289, 431 78, 431 90, F23G 706, F01N 300, F23N 102

Patent

active

039458024

ABSTRACT:
In an exhaust gas purifying apparatus which includes first and second reactors in the exhaust line of an internal combustion engine there is provided a heater burner to which there is delivered an air-fuel mixture and which heats the first reactor for rapidly bringing it to operating temperatures when the engine is started. In the air conduit through which combustion air for the air-fuel mixture is delivered to the burner there is provided a valve controlled in such a manner that the flow rate of combustion air remains constant and is thus independent of the counterpressure at the heating burner and the output delivery of the air pump driving the combustion air. Upon reaching operating temperatures the burner is extinquished and the combustion air is rerouted past the first reactor to the second reactor.

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patent: 3404702 (1968-10-01), Telford
patent: 3662540 (1972-05-01), Murphey
patent: 3775064 (1973-11-01), Berger et al.
patent: 3868819 (1975-03-01), Knapp

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