Articles | Volume 4, issue 2
https://doi.org/10.5194/jsss-4-255-2015
Special issue:
https://doi.org/10.5194/jsss-4-255-2015
Regular research article
 | 
10 Aug 2015
Regular research article |  | 10 Aug 2015

State determination of catalytic converters based on an ultra-wideband communication system

I. Motroniuk, R. Stöber, and G. Fischerauer

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Cited articles

Eichelbaum, M., Stößer, R., Karpov, A., Dobner, C.-K., Rosowski, F., Trunschke, A., and Schlögl, R.: The microwave cavity perturbation technique for contact-free and in situ electrical conductivity measurements in catalysis and materials science, Phys. Chem. Chem. Phys., 14, 1302–1312, https://doi.org/10.1039/c1cp23462e, 2012.
Feulner, M., Hagen, G., Piontkowski, A., Müller, A., Fischerauer, G., Brüggemann, D., and Moos R.: In-Operation Monitoring of the Soot Load of Diesel Particulate Filters: Initial Tests, Topics in Catalysis, 56, 483–488, https://doi.org/10.1007/s11244-013-0002-9, 2013.
Fischerauer, G., Spörl, M., Gollwitzer, A., Wedemann, M., and Moos, R.: Catalyst state observation via the perturbation of a microwave cavity resonator, Frequenz, 62, 180–184, https://doi.org/10.1515/freq.2008.62.7-8.180, 2008.
Fischerauer, G., Förster, M., and Moos, R.: Sensing the soot load in automotive diesel particulate filters by microwave methods, Meas. Sci. Technol., 21, 035108, https://doi.org/10.1088/0957-0233/21/3/035108, 2010a.
Fischerauer, G., Spörl, M., Reiß, S., and Moos, R.: Microwave-Based Investigation of Electrochemical Processes in Catalysts and Related Systems, Technisches Messen, 77, 419–427, https://doi.org/10.1524/teme.2010.0066, 2010b (in German).
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Short summary
A novel microwave-based approach for monitoring the state of aftertreatment systems such as diesel particulate filters (DPFs), three-way catalytic converters (TWCs), and selective catalytic reduction (SCR) catalysts is proposed. The interior of the catalyst metal housing serves as a communication channel between two wireless communication nodes. It is shown that, depending on the transmission channel characteristics, the properties of the catalyst, such as the catalyst state, can be inferred.
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