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Microwave-assisted oxygen storage level estimation for three-way catalyst control : Model-based development and benchmarking of selected control strategies

Title data

Schödel, Sebastian ; Votsmeier, Martin ; Fischerauer, Gerhard:
Microwave-assisted oxygen storage level estimation for three-way catalyst control : Model-based development and benchmarking of selected control strategies.
In: Canadian Journal of Chemical Engineering. Vol. 92 (September 2014) Issue 9 . - pp. 1597-1606.
ISSN 1939-019X
DOI: https://doi.org/10.1002/cjce.22019

Official URL: Volltext

Project information

Project financing: Bundesministerium für Bildung und Forschung

Abstract in another language

It has recently been shown that the oxygen content of a three-way catalyst can be observed directly by a microwave-assisted technique. In this contribution, several control strategies based on this microwave measurement approach are proposed. In a first step, the lambda probe downstream of the catalyst is replaced by the microwave-based state observer. In a second step, the microwave-based state observer replaces both lambda probes, upstream and downstream the catalyst. A model-based rapid control prototyping approach is used to test the selected control schemes and to compare their performance to the conventional air-fuel ratio control. This comparison is completed using a complex catalyst model and measured data for a realistic driving cycle are used. It is shown that under idealized conditions the new microwave-based control strategies can outperform the conventional lambda control based on two lambda probes. One important result is that improving the time resolution of the current microwave measurement system is essential to use the full potential of the new approach.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Three-way catalyst; oxygen storage-level estimation; microwave measurement; engine control strategies
Institutions of the University: Faculties > Faculty of Engineering Science > Chair Measurement and Control Technology > Chair Measurement and Control Technology - Univ.-Prof. Dr.-Ing. Gerhard Fischerauer
Profile Fields > Emerging Fields > Energy Research and Energy Technology
Faculties
Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Measurement and Control Technology
Profile Fields
Profile Fields > Emerging Fields
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 16 Feb 2016 09:07
Last Modified: 16 Feb 2016 09:07
URI: https://eref.uni-bayreuth.de/id/eprint/30825