Exhaust emission control device

Details Exhaust emission control device Exhaust emission control device

2007-06-12

2007-06-12

Tran, Hien (Department: 1764)

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

C422S171000, C422S180000

Reexamination Certificate

active

09941733

ABSTRACT:
The Rh content by percentage in an HC absorbent catalytic converter provided in an exhaust pipe is greater than the Rh content by percentage in an upstream three-way catalyst. In this way, even when HC which has been temporarily absorbed is emitted in an atmosphere and the exhaust gas becomes rich, the HC absorbent catalytic converter displays improved oxidization and removal of HC due to the high content by percentage of Rh which has a high HC conversion ratio in rich atmospheres. There is no necessity to control the air-fuel ratio to a strongly lean ratio and so HC removal can be improved while maintaining suppression of NOxemissions.

REFERENCES:
patent: 5935530 (1999-08-01), Langer et al.
patent: 2003/0099583 (2003-05-01), Ikeda et al.
patent: 196 17 563 (1997-06-01), None
patent: 07-008755 (1995-01-01), None
patent: 07-166854 (1995-06-01), None
patent: 7-174017 (1995-07-01), None
patent: 09-225265 (1997-09-01), None
patent: 9-228828 (1997-09-01), None
patent: 09-287438 (1997-11-01), None
patent: 2000-002111 (2000-01-01), None

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