Exhaust gas purifying apparatus

Details Exhaust gas purifying apparatus Exhaust gas purifying apparatus

1987-05-26

1989-11-21

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

F01N 302

Patent

active

048813699

ABSTRACT:
An exhaust gas purifying apparatus for use in an internal combustion engine into which fuel is injected at a proper timing. The apparatus includes a catalytic trap located in the engine exhaust system for collecting the exhaust particles discharged thereto from the engine and burning the collected exhaust particles under catalytic action. A control unit controls the fuel injection timing in accordance with engine operating condictions. The control unit retards the fuel injection timing when the engine exhaust gas temperature is in a predetermined range and the pressure differential across the catalytic trap exceeds a reference value.

REFERENCES:
patent: 4211075 (1980-07-01), Ludecke
patent: 4452040 (1984-06-01), Kobashi
patent: 4462208 (1984-07-01), Hicks
patent: 4685290 (1987-08-01), Kamiya

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