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Effects of H2O, CO2, CO, and flow rates on the RF-based monitoring of three-way catalysts

Title data

Reiß, Sebastian ; Wedemann, Marion ; Spörl, Matthias ; Fischerauer, Gerhard ; Moos, Ralf:
Effects of H2O, CO2, CO, and flow rates on the RF-based monitoring of three-way catalysts.
In: Sensor Letters. Vol. 9 (February 2011) Issue 1 . - pp. 316-320.
ISSN 1546-198X
DOI: https://doi.org/10.1166/sl.2011.1472

Official URL: Volltext

Project information

Project title:
Project's official titleProject's id
No informationMO 1060/6-1
No informationFI 956/3-1

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

At the moment, the operating conditions for best conversion of limited emissions of gasoline engines are controlled by lambda probes upstream and downstream of the three-way catalyst. Their signals are the basis for complex oxygen loading models of the catalyst. A novel approach is to directly determine the catalyst state without lambda probes via a contactless monitoring system based on the interaction of electromagnetic waves with the catalyst. We could show previously that the resonance frequencies of the catalyst-filled housing are strongly correlated with the oxygen loading of the catalyst. In this study, it is shown that cross-effects of water, carbon monoxide, carbon dioxide, and gas flow rate can be neglected.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties
Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Measurement and Control Technology
Faculties > Faculty of Engineering Science > Chair Measurement and Control Technology > Chair Measurement and Control Technology - Univ.-Prof. Dr.-Ing. Gerhard Fischerauer
Faculties > Faculty of Engineering Science > Chair Functional Materials
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Profile Fields
Profile Fields > Advanced Fields
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Research Institutions > Research Units
Research Institutions > Research Units > ZET - Zentrum für Energietechnik
Research Institutions > Research Units > BERC - Bayreuth Engine Research Center
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 19 Jan 2015 09:36
Last Modified: 28 Feb 2019 08:50
URI: https://eref.uni-bayreuth.de/id/eprint/5615