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Journal of Sensors
Volume 2016, Article ID 5380646, 8 pages
Research Article

New Leakage Current Particulate Matter Sensor for On-Board Diagnostics

1Department of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China
2Jintan Jonssen Electric-Tech Corp, Changzhou 213200, China

Received 22 May 2016; Accepted 2 August 2016

Academic Editor: Yan Lu

Copyright © 2016 Jiawei Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Structure and principle of the new leakage current particulate matter (PM) sensor are introduced and further study is performed on the PM sensor with the combination of numerical simulation and bench test. High voltage electrode, conductive shell, and heaters are all built-in. Based on the principle of Venturi tube and maze structure design, this sensor can detect transient PM concentrations. Internal flow field of the sensor and distribution condition of PM inside the sensor are analyzed through gas-solid two-phase flow numerical simulation. The experiment was also carried out on the whole sensor system (including mechanical and electronic circuit part) and the output signals were analyzed. The results of simulation and experiment reveal the possibility of PM concentration (mass) detection by the sensor.