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

2006-03-07

2006-03-07

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, C060S277000, C060S298000, C123S481000

Reexamination Certificate

active

07007461

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: 4729220 (1988-03-01), Terasaka et al.
patent: 5158063 (1992-10-01), Hosoda et al.
patent: 5325664 (1994-07-01), Seki et al.
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), Minowa et al.
patent: 5894724 (1999-04-01), Minowa et al.
patent: 5966930 (1999-10-01), Hatano et al.
patent: 6057605 (2000-05-01), Bourne et al.
patent: 6089017 (2000-07-01), Ogawa et al.
patent: 6092369 (2000-07-01), Hosogai et al.
patent: 6185933 (2001-02-01), Tsuzuki et al.
patent: 6272850 (2001-08-01), Grant et al.
patent: 6282889 (2001-09-01), Kakuyama et al.
patent: 6314724 (2001-11-01), Kakuyama et al.
patent: 6405527 (2002-06-01), Suzuki et al.
patent: 6481201 (2002-11-01), Kako et al.
patent: 6502389 (2003-01-01), Katayama 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
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.
Paul M. Laing et al., “A Simplified Approach to Modeling Exhaust System Emissions: SIMTWC”, SAE 1999-01-3476, Copyright ©1999 Society of Automotive Engineers, Inc.

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