Conductometric Soot Sensor for Automotive Exhausts: Initial Studies

Sensors

Gunter Hagen²  Constanze Feistkorn²  Sven Wiegärtner²  Andreas Heinrich²  Dieter Brüggemann¹ 

[1] Engineering Thermodynamics and Transport Processes, Bayreuth Engine Research Center (BERC), University of Bayreuth, 95440 Bayreuth, Germany; E-Mail:;Functional Materials, Bayreuth Engine Research Center (BERC), University of Bayreuth, 95440 Bayreuth, Germany; E-Mail:

关键词: on-board diagnosis (OBD);    diesel particulate filter (DPF);    emission legislation;    diesel particulate matter (PM);   

DOI  :  10.3390/s100301589

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2010 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.