Catalytic converter for use in automotive exhaust emission contr

Details Catalytic converter for use in automotive exhaust emission contr Catalytic converter for use in automotive exhaust emission contr

1992-03-17

1993-07-20

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

422177, 422179, 422180, 55523, 55DIG30, 60300, F01N 310, B01D 5336, H05B 310

Patent

active

052290794

ABSTRACT:
A catalytic converter suitable for use in controlling automotive exhaust emissions including a honeycomb heater disposed downstream of a main monolithic catalyst or between main monolithic catalysts. The honeycomb heater includes a honeycomb structure with a catalyst carried thereon and with at least two electrodes provided thereon to supply a current thereto. A catalytic converter also includes a monolith catalyst for ignition which is disposed downstream of the honeycomb heater. A catalytic converter includes, in place of the honeycomb heater and the monolithic catalyst, a module which is composed of a catalyzed light-off honeycomb heater or of a honeycomb heater and a light-off monolithic catalyst. The module is removably disposed upstream or downstream of a main monolithic catalyst, or between main monolithic catalysts.

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SwRI-9574, "Experimentation to Determine the Feasibility of Air Injection on an Electrically-Heated Catalyst for Reducing Cold-Start Benzene Emissions from Gasoline Vehicles" by Martin J. Heimrich, Jan., 1990.

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