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Conductometric Sensor for Soot Mass Flow Detection in Exhausts of Internal Combustion Engines

Title data

Feulner, Markus ; Hagen, Gunter ; Müller, Andreas ; Schott, Andreas ; Zöllner, Christian ; Brüggemann, Dieter ; Moos, Ralf:
Conductometric Sensor for Soot Mass Flow Detection in Exhausts of Internal Combustion Engines.
In: Sensors. Vol. 15 (2015) . - pp. 28796-28806.
ISSN 1424-8220

Official URL: Volltext

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Abstract in another language

Soot sensors are required for on-board diagnostics (OBD) of automotive diesel particulate filters (DPF) to detect filter failures. Widely used for this purpose are conductometric sensors, measuring an electrical current or resistance between two electrodes. Soot particles deposit on the electrodes, which leads to an increase in current or decrease in resistance. If installed upstream of a DPF, the “engine-out” soot emissions can also be determined directly by soot sensors. Sensors were characterized in diesel engine real exhausts under varying operation conditions and with two different kinds of diesel fuel. The sensor signal was correlated to the actual soot mass and particle number, measured with an SMPS. Sensor data and soot analytics (SMPS) agreed very well, an impressing linear correlation in a double logarithmic representation was found. This behavior was even independent of the used engine settings or of the biodiesel content.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: on-board diagnostics (OBD); diesel particulate filter (DPF); soot sensor; accumulating sensor; soot-load determination; dosimeter
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
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Research Institutions > Research Units > ZET - Zentrum für Energietechnik
Research Institutions > Research Units > BERC - Bayreuth Engine Research Center
Faculties > Faculty of Engineering Science > Chair Functional Materials
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Units
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 22 Dec 2015 10:16
Last Modified: 15 Feb 2019 10:06