Exhaust gas purification method for internal combustion engine

Details Exhaust gas purification method for internal combustion engine Exhaust gas purification method for internal combustion engine

2006-08-15

2006-08-15

Nguyen, Tu M. (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

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

C060S274000, C060S277000, C060S301000, C060S276000

Reexamination Certificate

active

07089730

ABSTRACT:
To obtain an exhaust gas purification method for an internal combustion engine for detecting timing at which an inflow NOx amount flowing into an NOx absorption catalyst exceeds an NOx amount processable by the NOx absorption catalyst, and enriches the air/fuel ratio to prevent deterioration of the exhaust gas and maintain good fuel consumption. Based on an NOx amount absorbed in the NOx absorption catalyst and a maximum NOx absorption amount NOx of the absorption catalyst, a processable NOx amount processable by the NOx absorption catalyst per unit time is calculated and compared with the inflow NOx amount entering the NOx absorption catalyst per unit time, and when it is determined that the inflow NOx amount is greater, the air/fuel ratio is switched to rich.

REFERENCES:
patent: 5437153 (1995-08-01), Takeshima et al.
patent: 5595060 (1997-01-01), Togai et al.
patent: 5715679 (1998-02-01), Asanuma et al.
patent: 5743084 (1998-04-01), Hepburn
patent: 6105365 (2000-08-01), Deeba et al.
patent: 6119449 (2000-09-01), Köhler
patent: 6263666 (2001-07-01), Kubo et al.
patent: 6499291 (2002-12-01), Lang et al.
patent: 6499293 (2002-12-01), Surnilla et al.
patent: 198 23 210 (1998-12-01), None
patent: 199 44 694 (2000-08-01), None
patent: 199 22 981 (2000-11-01), None
patent: 100 27 738 (2001-02-01), None
patent: 100 38 227 (2001-02-01), None
patent: 696 09 857 (2001-03-01), None
patent: 100 30 064 (2001-04-01), None
patent: 101 04 729 (2001-09-01), None
patent: 2586739 (1996-12-01), None
patent: 2600492 (1997-01-01), None

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