Internal combustion engine exhaust emission control system with

Details Internal combustion engine exhaust emission control system with Internal combustion engine exhaust emission control system with

1997-07-17

1999-06-08

Denion, Thomas E.

Power plants

Internal combustion engine with treatment or handling of...

Material from exhaust structure fed to engine intake

60284, 60286, 60297, 60301, F02M 2506

Patent

active

059100974

ABSTRACT:
A motor vehicle exhaust emission control system has two adsorber parts connected in parallel for alternate adsorption and desorption of nitrogen oxides contained in the exhaust from an internal combustion engine and components for conducting further downstream the exhaust that emerges in the adsorber part that is operating at any given time in the adsorption mode and for returning the exhaust that emerges from the other adsorber part that is then operating in the desorption mode, to an intake line of the engine. An oxidizing converter is located upstream of the adsorber part and near the engine for oxidation of the NO contained in the exhaust to form NO.sub.2, so as to permit an increase in the NO.sub.X adsorption rate for the nitrogen adsorber parts.

REFERENCES:
patent: 5085049 (1992-02-01), Rim et al.
patent: 5365734 (1994-11-01), Takeshima
patent: 5406790 (1995-04-01), Hirota et al.
patent: 5457958 (1995-10-01), Boegner et al.

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