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A mixed potential based sensor that measures directly catalyst conversion - A novel approach for catalyst on-board diagnostics

Title data

Hagen, Gunter ; Burger, Katharina ; Wiegärtner, Sven ; Schönauer-Kamin, Daniela ; Moos, Ralf:
A mixed potential based sensor that measures directly catalyst conversion - A novel approach for catalyst on-board diagnostics.
In: Sensors and Actuators B: Chemical. Vol. 217 (2015) . - pp. 158-164.
ISSN 0925-4005
DOI: https://doi.org/10.1016/j.snb.2014.10.004

Official URL: Volltext

Abstract in another language

Almost all diesel engines are equipped with a diesel oxidation catalyst (DOC). It is one task of the DOC to oxidize hydrocarbons. Its conversion efficiency has to be monitored during operation (on-board diagnostics, OBD). In contrast to approaches that use one hydrocarbon sensor downstream of the DOC, we suggest a novel concept to determine in operando and directly the conversion rate of such a catalyst. This conversion rate sensor (CRS) bases on the mixed potential principle, and compares the gas atmospheres up- and downstream of the catalyst directly within one single device. To prove this concept, an initial laboratory setup was set up. It is shown that the sensor responds to the conversion rate as expected with a CRS characteristic that follows theoretical expectations.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Faculties
Faculties > Faculty of Engineering Science > Chair Functional Materials
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 13 Jul 2015 11:32
Last Modified: 13 Nov 2015 10:14
URI: https://eref.uni-bayreuth.de/id/eprint/16156