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Locally resolved in-situ detection of the soot loading in diesel particulate filters

Title data

Hagen, Gunter ; Piontkowski, Andreas ; Müller, Andreas ; Brüggemann, Dieter ; Moos, Ralf:
Locally resolved in-situ detection of the soot loading in diesel particulate filters.
2011
Event: IEEE SENSORS 2011 Conference , 28.-31.10.2011 , Limerick, Ireland.
(Conference item: Conference , Speech )

Official URL: Volltext

Abstract in another language

In order to meet the emission legislation, in today’s diesel cars diesel particulate filters (DPFs) have to be installed. Soot is filtered in the pores of ceramic wall-flow filters, but to avoid clogging, DPFs must be regenerated. By increasing the exhaust temperature, sorbed soot is burned off. An efficient control strategy depends on the knowledge of the amount and the location of soot inside the DPF. We present initial tests of a novel method to measure directly the soot load inside a filter. By electrically connecting single walls of the ceramic filter, a resistance measurement is possible. Soot particles form conductive paths inside the DPF channels. The measured values depend on the amount of soot stored inside the filter. In a special setup, we prepared connections over the lateral axis of a DPF. It is possible to get an insight view of a DPF, e.g., oneclearly sees how soot trapping starts at the outlet side of the filter.

Further data

Item Type: Conference item (Speech)
Refereed: Yes
Institutions of the University: Faculties
Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Engineering Thermodynamics and Transport Processes
Faculties > Faculty of Engineering Science > Chair Engineering Thermodynamics and Transport Processes > Chair Engineering Thermodynamics and Transport Processes - Univ.-Prof. Dr.-Ing. Dieter Brüggemann
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: 27 Apr 2015 11:55
Last Modified: 15 Feb 2019 09:55
URI: https://eref.uni-bayreuth.de/id/eprint/11283