Adaptive control of a three-way catalytic converter

Author

Ammann, M. ; Geering, H.P. ; Onder, C.H. ; Roduner, C.A. ; Shafai, E.

Author_Institution

Meas. & Control Lab., Swiss Federal Inst. of Technol., Zurich, Switzerland

Volume

3

fYear

2000

fDate

2000

Firstpage

1561

Abstract

The three-way catalytic converter (TWC) is an effective device for reducing exhaust emissions in automobiles. For control purposes, the TWC can be regarded as an oxygen storage device. In order to reduce exhaust emissions efficiently, the oxygen storage should neither be completely full nor totally empty. Based on a simple model for oxygen storage in the TWC, an adaptive scheme for the control of the oxygen level is presented. The parameters involved in the model for oxygen storage are identified online by measuring the air-to-fuel ratios upstream and downstream of the TWC and using a recursive Gauss-Newton estimation method

Keywords

Newton method; adaptive control; air pollution control; automobiles; chemical variables control; internal combustion engines; recursive estimation; air-to-fuel ratios; exhaust emissions; oxygen level control; oxygen storage device; recursive Gauss-Newton estimation method; three-way catalytic converter; Adaptive control; Automobiles; Engines; Exhaust systems; Laboratories; Least squares methods; Newton method; Programmable control; Recursive estimation; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 2000. Proceedings of the 2000

Conference_Location

Chicago, IL

ISSN

0743-1619

Print_ISBN

0-7803-5519-9

Type

conf

DOI

10.1109/ACC.2000.879463

Filename

879463