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Conductometric Soot Sensor for Automotive Exhausts: Initial Studies
Functional Materials, Bayreuth Engine Research Center (BERC), University of Bayreuth, 95440 Bayreuth, Germany
Engineering Thermodynamics and Transport Processes, Bayreuth Engine Research Center (BERC), University of Bayreuth, 95440 Bayreuth, Germany
* Author to whom correspondence should be addressed.
Received: 14 January 2010; in revised form: 3 February 2010 / Accepted: 22 February 2010 / Published: 1 March 2010
Abstract: In order to reduce the tailpipe particulate matter emissions of Diesel engines, Diesel particulate filters (DPFs) are commonly used. Initial studies using a conductometric soot sensor to monitor their filtering efficiency, i.e., to detect a malfunction of the DPF, are presented. The sensors consist of a planar substrate equipped with electrodes on one side and with a heater on the other. It is shown that at constant speed-load points, the time until soot percolation occurs or the resistance itself are reproducible means that can be well correlated with the filtering efficiency of a DPF. It is suggested to use such a sensor setup for the detection of a DPF malfunction.
Keywords: on-board diagnosis (OBD); diesel particulate filter (DPF); emission legislation; diesel particulate matter (PM)
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Hagen, G.; Feistkorn, C.; Wiegärtner, S.; Heinrich, A.; Brüggemann, D.; Moos, R. Conductometric Soot Sensor for Automotive Exhausts: Initial Studies. Sensors 2010, 10, 1589-1598.
Hagen G, Feistkorn C, Wiegärtner S, Heinrich A, Brüggemann D, Moos R. Conductometric Soot Sensor for Automotive Exhausts: Initial Studies. Sensors. 2010; 10(3):1589-1598.
Hagen, Gunter; Feistkorn, Constanze; Wiegärtner, Sven; Heinrich, Andreas; Brüggemann, Dieter; Moos, Ralf. 2010. "Conductometric Soot Sensor for Automotive Exhausts: Initial Studies." Sensors 10, no. 3: 1589-1598.