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Thermoelectric hydrocarbon sensor in thick-film technology for on-board-diagnostics of a diesel oxidation catalyst

Title data

Wiegärtner, Sven ; Hagen, Gunter ; Kita, Jaroslaw ; Reitmeier, Willibald ; Hien, Markus ; Grass, Philippe ; Moos, Ralf:
Thermoelectric hydrocarbon sensor in thick-film technology for on-board-diagnostics of a diesel oxidation catalyst.
In: Sensors and Actuators B: Chemical. Vol. 214 (31 July 2015) . - pp. 234-240.
ISSN 0925-4005
DOI: https://doi.org/10.1016/j.snb.2015.02.083

Official URL: Volltext

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Project information

Project title:
Project's official titleProject's id
No informationBAY174/002-1210-0003

Project financing: Andere
Mikrosystemtechnik Bayern

Abstract in another language

Thermoelectric hydrocarbon sensors were fully manufactured in both alumina substrate-based thick-film technique and low temperature cofired ceramics (LTCC) tape technology. Au–Pt thermocouples were screen-printed on insulating sensor substrates. Porous alumina impregnated with one weight percent platinum was used as catalytic material that covered one side of the sensor. Due to the generated thermal exothermicity, a temperature difference between the catalytically active and the catalytically inactive (reference) side occurred. Additionally, the sensor was equipped with an internal platinum heating element to operate the sensor at temperatures above the light-off temperature of the catalyst material. Owing to the lower thermal conductivity of LTCC, the sensitivity could be improved essentially. To further increase the sensor signal, the number of thermocouples per sensor was enhanced by applying thermopiles of several Au–Pt thermocouples. Therefore, the layout of the heating element was optimized. Altogether, a sensitivity of 0.57 μV/ppm propene was achieved.

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
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Research Institutions > Research Units > ZET - Zentrum für Energietechnik
Research Institutions > Research Units > BERC - Bayreuth Engine Research Center
Faculties
Faculties > Faculty of Engineering Science > Chair Functional Materials
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Units
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 20 Apr 2015 07:27
Last Modified: 18 Apr 2016 07:33
URI: https://eref.uni-bayreuth.de/id/eprint/10477