Exhaust gas purifying system

Details Exhaust gas purifying system Exhaust gas purifying system

1994-03-22

1996-03-26

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

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

60301, F01N 328

Patent

active

055010741

ABSTRACT:
An exhaust gas purifying system for an automobile engine is equipped with a metal zeolite catalytic converter for deoxidizing and purifying nitrogen oxides in exhaust gas. The system controls and compulsorily changes the air-fuel ratio of the fuel mixture injected into the automobile engine based on a target air-fuel ratio only when the temperature of the exhaust gas, before entering the catalyst, is greater than a specific temperature.

REFERENCES:
patent: 4729220 (1988-03-01), Terasaka
patent: 5209061 (1993-05-01), Takeshima
patent: 5211010 (1993-05-01), Hirota
patent: 5211011 (1993-05-01), Nishikawa
patent: 5343702 (1994-09-01), Miyajima

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