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In-Operation Monitoring of the Soot Load of Diesel Particulate Filters with a Microwave Method

Title data

Feulner, Markus ; Hagen, Gunter ; Müller, Andreas ; Brüggemann, Dieter ; Moos, Ralf:
In-Operation Monitoring of the Soot Load of Diesel Particulate Filters with a Microwave Method.
In: 14th International Meeting on Chemical Sensors : IMCS 2012. - Wunstorf : AMA Verband für Sensorik und Messtechnik e.V. , 2012 . - pp. 1422-1425
ISBN 978-3-9813484-2-2
DOI: https://doi.org/10.5162/IMCS2012/P2.2.6

Official URL: Volltext

Project information

Project title:
Project's official titleProject's id
No informationMO 1060/6-2

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

A contactless sensing technology for determining the soot load of a diesel particulate filter (DPF) is introduced. This method uses microwaves that are impressed into the housed DPF. Resonance modes form and the input reflection coefficient, S11, is a function of the frequency of the impressed microwaves. Around the resonance frequency, S11 depends strongly on the soot load of the DPF. In-operation experiments were conducted at a dynamometer test bench using a 3.0 l TDI-engine. S11 was compared with the differential pressure signal, which is serial standard for estimating the soot load of DPFs. Additionally, the soot mass of the DPF was gravimetrically determined. It was found out that the resonance frequency shows a good and reproducible correlation with both the actual differential pressure and the gravimetrically determined soot mass. Soot loading and DPF regeneration could be observed clearly with the microwave method. It can be concluded that this technique is suitable for in-operation soot mass detection.

Further data

Item Type: Article in a book
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 > 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: 20 Apr 2015 10:02
Last Modified: 15 Feb 2019 09:57
URI: https://eref.uni-bayreuth.de/id/eprint/10481