Conductometric Soot Sensor for Automotive Exhausts: Initial Studies
Conductometric Soot Sensor for Automotive Exhausts: Initial Studies
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DOI：
10.3390/s100301589
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发表时间：
2010-03-01
期刊：
影响因子：
3.9
通讯作者：
Moos, Ralf
中科院分区：
文献类型：
--
作者：
Hagen, Gunter;Feistkorn, Constanze;Moos, Ralf
为了减少柴油发动机的尾气颗粒物排放，通常使用柴油颗粒过滤器（DPF）。介绍了使用电导烟灰传感器监测其过滤效率（即检测 DPF 故障）的初步研究。传感器由一侧配备电极、另一侧配备加热器的平面基板组成。结果表明，在恒速负载点，发生烟灰渗透的时间或阻力本身是可再现的，这意味着可以与 DPF 的过滤效率很好地相关。建议使用此类传感器设置来检测 DPF 故障。
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.