Exhaust gas purifying apparatus and method for internal combusti

Details Exhaust gas purifying apparatus and method for internal combusti Exhaust gas purifying apparatus and method for internal combusti

1997-06-03

1999-06-15

Wolfe, Willis R.

Power plants

Internal combustion engine with treatment or handling of...

Methods

60287, 60278, 12356821, F01N 320

Patent

active

059116811

ABSTRACT:
To complete a regeneration process of an adsorbent adsorbing unburnt gas components, for a short period of time without making an operational condition of an internal combustion engine unstable and to prevent an ability of the adsorbent from being degraded, an exhaust gas purifying apparatus includes a first exhaust flow path and a second exhaust flow path branched downstream of the catalyst; a n adsorbent disposed in the first exhaust flow path for adsorbing unburnt gas components contained in the exhaust gas; and a recirculating device for recirculating at least part of the exhaust gas discharged from the adsorbent to an intake side of the internal combustion engine. A operational condition of the internal combustion engine is detected. A recirculation amount of the exhaust gas is changed in accordance with the detected operational condition.

REFERENCES:
patent: 3645098 (1972-02-01), Templin et al.
patent: 5307627 (1994-05-01), Christensen et al.
patent: 5388405 (1995-02-01), Fujishita et al.
patent: 5632144 (1997-05-01), Isobe
Patent Abstracts of Japan, vol. 095, No. 006, Jul. 31, 1995 & JP 07 071237 A (Toyota Motor Corp.), Mar. 14, 1995.

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