System and method for controlling catalyst storage capacity

Details System and method for controlling catalyst storage capacity System and method for controlling catalyst storage capacity

2006-02-07

2006-02-07

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, C701S103000

Reexamination Certificate

active

06993899

ABSTRACT:
The invention relates to a new method and system for optimizing the efficiency of an automotive catalytic converter by adjusting the engine air/fuel ratio based on estimates of the actual amount of oxidants stored in the catalyst. The oxidant storage capacity of the catalyst is adjusted by controlling engine spark in response to an estimate of a current amount of oxidants stored in the catalyst and an estimate of the total available oxidant storage capacity of the catalyst. To maintain engine speed in spite of adjustments to the engine spark, the engine air mass is also adjusted.

REFERENCES:
patent: 5325664 (1994-07-01), Seki et al.
patent: 5335538 (1994-08-01), Blischke et al.
patent: 5475975 (1995-12-01), Nasu
patent: 5595060 (1997-01-01), Togai et al.
patent: 5609023 (1997-03-01), Katoh et al.
patent: 5610844 (1997-03-01), Maus et al.
patent: 5626014 (1997-05-01), Hepburn et al.
patent: 5649420 (1997-07-01), Mukaihira et al.
patent: 5678402 (1997-10-01), Kitagawa et al.
patent: 5784880 (1998-07-01), Toshiro et al.
patent: 5842340 (1998-12-01), Bush et al.
patent: 5848528 (1998-12-01), Liu
patent: 5857163 (1999-01-01), Trombley et al.
patent: 5878567 (1999-03-01), Adamczyk, Jr. et al.
patent: 5881552 (1999-03-01), Iwata et al.
patent: 5894724 (1999-04-01), Minowa et al.
patent: 5956941 (1999-09-01), Cullen et al.
patent: 5966960 (1999-10-01), Cummings et al.
patent: 6057605 (2000-05-01), Bourne et al.
patent: 6289673 (2001-09-01), Tayama et al.
patent: 6481201 (2002-11-01), Kako et al.
patent: 6494037 (2002-12-01), Oguma et al.
patent: 6502389 (2003-01-01), Katayama et al.
patent: 6546719 (2003-04-01), Kamoto et al.
patent: 0733787 (1996-09-01), None
patent: 0831226 (1998-03-01), None
patent: 1061245 (2000-12-01), None
patent: 1128042 (2001-08-01), None
patent: 1253309 (2002-10-01), None
patent: 2344771 (2000-06-01), None
patent: 2356160 (2001-05-01), None
SAE 800052.
James C. Peyton Jones, J. Brian Roberts, Pierre Bernard and Richard A. Jackson; A Simplified Model for the Dynamics of a Three-Way Catalytic Converter; Reprinted from: Exhaust Aftertreatment Modeling and Gasoline Direct Injection Aftertreatment (SP-1533) SAE International Technical Paper Series, Warrendale, Pennsylvania, USA.
SAE 800052, Air-Fuel Control to reduce emissions, II. Engine-catalysts charaCterization under cyclic conditions; Wei-Ming Wang; Congress and Exposition, Cobo Hall, Detroit, MI, Feb. 25-29, 1980.
SAE 1999-01-3476, “A Simplified Approach to Modeling Exhaust System Emissions: SIMTWC”, Laing et al.
Wei-Ming Wang, “Air-Fuel Control to Reduce Emissions, II. Engine-Catalyst Characterization Under-Cyclic Conditions”, SAE 800052, Feb. 25-29, 1980, pp. 1-13.

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