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
DOI der Verlagsversion: https://doi.org/10.3390/s151128796

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Abstract

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
Keywords:	on-board diagnostics (OBD); diesel particulate filter (DPF); soot sensor; accumulating sensor; soot-load determination; dosimeter
DDC Subjects:	600 Technology, medicine, applied sciences > 620 Engineering
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 > Central research institutes > Bayreuth Center for Material Science and Engineering - BayMAT Research Institutions > Research Units > Zentrum für Energietechnik - ZET Research Institutions > Research Units > BERC - Bayreuth Engine Research Center Faculties Faculties > Faculty of Engineering Science > Chair Functional Materials Profile Fields Profile Fields > Advanced Fields Research Institutions Research Institutions > Central research institutes Research Institutions > Research Units
Language:	English
Originates at UBT:	Yes
Date Deposited:	22 Dec 2015 10:16
Last Modified:	22 Jun 2020 07:28
URI:	https://epub.uni-bayreuth.de/id/eprint/3170

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