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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.
In: SAE Technical Paper. (2008) .
DOI: https://doi.org/10.4271/2008-01-0916

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: Article in a journal
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
Research Institutions > Research Units
Research Institutions > Research Units > ZET - Zentrum für Energietechnik
Research Institutions > Research Units > BERC - Bayreuth Engine Research Center
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 21 Jan 2015 12:07
Last Modified: 28 Feb 2019 09:00
URI: https://eref.uni-bayreuth.de/id/eprint/5755