Exhaust gas purifying device for internal combustion engine

Details Exhaust gas purifying device for internal combustion engine Exhaust gas purifying device for internal combustion engine

1991-05-30

1993-05-04

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

422169, 422182, 60286, 60303, F01N 322, F01N 900

Patent

active

052079902

ABSTRACT:
An exhaust gas purifying device which is provided with catalytic converter and a fuel injector which are disposed upstream of a particulate matter trap. The fuel injection injects fuel to the catalytic converter to rise exhaust gas temperature by its oxidation reaction heat when the exhaust gas temperature is slightly lower than a predetermined regeneration temperature. Further, a closable bypass passage is communicated with the passage between the catalytic converter and the trap and functions to allow to bypass exhaust gases in accordance with the trap condition and the exhaust gas temperature.

REFERENCES:
patent: 4372111 (1983-02-01), Virk et al.
patent: 4875336 (1989-10-01), Hayashi et al.
patent: 4974414 (1990-12-01), Kono et al.
patent: 5052178 (1991-10-01), Clerc et al.
patent: 5067320 (1991-11-01), Kanesaki

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