at Google ScholarTitle data
Reiß, Sebastian ; Moos, Ralf ; Wedemann, Marion ; Spörl, Matthias ; Nerowski, Alexander ; Fischerauer, Gerhard:
RF-probing of Automotive Catalysts.
In:
AMA Service GmbH
(ed.):
SENSOR 2009 : 14th International Conference on Sensors, Technologies, Electronics and Applications. Proceedings. Volume II. -
Wunstorf
: AMA Service GmbH
,
2009
. - pp. 113-116
ISBN 978-3-9810993-5-5
Abstract in another language
In order to meet the strict emission regulations, gasoline operated vehicles are equipped with three-way catalysts (TWC) and lambda sensors are applied to control the exhaust gas aftertreatment system. Since the TWC achieves maximum conversion of hydrocarbons, carbon monoxide, and nitrogen oxides at λ ≈ 1, λ is measured by lambda-probes upstream and downstream of the catalyst and is readjusted if required (λ: normalized air-to-fuel ratio). This leads to an oscillating air-to-fuel-ratio that is damped by oxygen storage components in the washcoat of the TWC (ceria-zirconia mixed oxides). These ceria-based materials store oxygen under lean atmospheres (λ > 1) and release oxygen under rich conditions (λ < 1).
In the present contribution, aspects of a novel approach to determine the oxygen loading of a TWC by a contactless measurement and in-situ with the help of radio frequency (RF) without lambda-probes is presented.
Further data
| Item Type: | Article in a book |
|---|---|
| Refereed: | No |
| 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 > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos Faculties > Faculty of Engineering Science > Chair Functional Materials |
| Result of work at the UBT: | Yes |
| DDC Subjects: | 600 Technology, medicine, applied sciences > 620 Engineering |
| Date Deposited: | 13 Jun 2016 08:28 |
| Last Modified: | 13 Jun 2016 08:28 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/32659 |