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TWC: lambda control and OBD without lambda probe : an initial approach

Title data

Moos, Ralf ; Spörl, Matthias ; Hagen, Gunter ; Gollwitzer, Andreas ; Wedemann, Marion ; Fischerauer, Gerhard:
TWC: lambda control and OBD without lambda probe : an initial approach.
2008
Event: 2008 SAE World Congress , 14.-17.April 2008 , Detroit, Michigan, USA.
(Conference item: Conference , Other Presentation type)

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Abstract in another language

To determine the oxygen storage capacity of three-way catalysts in gasoline-operated vehicles, lambda probes are best practice to measure the A/F ratio of the exhaust for monitoring indirectly the conversion efficiency. In this paper, initial tests of a novel approach are described to determine the oxygen loading of the TWC more directly by means of radio frequency without the use of lambda probes. Experiments in synthetic exhaust gas as well as dynamometer tests using ceria-containing commercial catalysts showed that characteristic parameters of the radio-frequency signal coincide with the oxidation/reduction state of the TWC.

Further data

Item Type: Conference item (Other)
Refereed: Yes
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
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Profile Fields
Profile Fields > Advanced Fields
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 03 Jun 2015 06:44
Last Modified: 06 Apr 2016 08:53
URI: https://eref.uni-bayreuth.de/id/eprint/14498