bei Google ScholarTitelangaben
Beulertz, Gregor ; Fritsch, Mirko ; Fischerauer, Gerhard ; Herbst, Felix ; Votsmeier, Martin ; Gieshoff, Jürgen ; Hagen, Gunter ; Moos, Ralf:
In-situ three-way-catalyst characterization for a laboratory test bench.
2012
Veranstaltung: CAPOC9 - 9th International Congress on Catalysis and Automotive Pollution Control
, 29. - 31.08.2012
, Brussels, Belgium.
(Veranstaltungsbeitrag: Kongress/Konferenz/Symposium/Tagung
,
Paper
)
Angaben zu Projekten
| Projekttitel: |
Offizieller Projekttitel Projekt-ID Ohne Angabe MO 1060/13-1, FI 956/5-1 |
|---|---|
| Projektfinanzierung: |
Deutsche Forschungsgemeinschaft |
Abstract
Three-way catalyst-based automotive exhaust gas aftertreatment is of high importance to meet today’s emission standards. To determine in situ the oxygen loading state of the three-way catalysts, a microwave cavity perturbation method is used. In this study, it is investigated whether this measurement setup that had originally been described for full-sized catalysts can be transferred to a lab test bench using 1” cores. The initial tests were successful and a high correlation between the loading degree dependent resonance frequency and the conversion was found. Furthermore, a new simulation model which takes the oxidation of the ceria by H2O and CO2 into account could be validated with this microwave measurement technique. The benefit of this method is not only faster testing at much lower costs but also a higher flexibility with respect to composition of the feed gas.