Exhaust gas purifying system for internal combustion engine

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

1991-04-25

1993-03-16

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

051933403

ABSTRACT:
An exhaust gas purifying system including a trap filter for trapping particulates and the like which are discharged from a diesel engine. The trap filter in disposed in an exhaust passageway and carries an oxidation catalyst. A fuel injector valve is provided to inject fuel into the exhaust passageway upstream of the trap filter, so that the trap filter is supplied with fuel. The fuel is burned in the trap filter under the action of the oxidation catalyst thereby burning the particulates and the like so as to achieve a regeneration operation for the trap filter. The amount of fuel from the fuel injector valve is controlled to increase as an intake air amount increases and to decrease as an exhaust gas temperature increases.

REFERENCES:
patent: 4566271 (1986-01-01), French
patent: 4756155 (1988-07-01), Shinzawa
patent: 4887426 (1989-12-01), Goerlich
patent: 5044158 (1991-09-01), Goerlich

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