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Simulation and Experimental Research on the Charged Characteristics of Particulate Matter in the Sensor under Different Exhaust States
The particulate matter sensor needs to be used in order to detect the concentration of particulate matter in diesel engine exhaust, monitor the working condition of diesel particulate filter (DPF) in real time, and ensure the reliable operation of DPF. The flow field and electric field of the sensor...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7662904/ https://www.ncbi.nlm.nih.gov/pubmed/33142825 http://dx.doi.org/10.3390/s20216226 |
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author | Tang, Dong Ju, Zhixuan Wang, Li |
author_facet | Tang, Dong Ju, Zhixuan Wang, Li |
author_sort | Tang, Dong |
collection | PubMed |
description | The particulate matter sensor needs to be used in order to detect the concentration of particulate matter in diesel engine exhaust, monitor the working condition of diesel particulate filter (DPF) in real time, and ensure the reliable operation of DPF. The flow field and electric field of the sensor are studied and their distribution in the sensor is analyzed. At the same time, the particle tracking model was used to simulate the charged characteristics of particles in the sensor under different exhaust states. It is found that the exhaust gas flow rate maintains stability after entering the outer protection zone and concentration test zone. The electric field is a non-uniform electric field and the direction of electric field intensity is from the high voltage electrode to the grounding electrode. The electric charge per particle will decrease with the increase of exhaust flow rate, but the electric charge shows a slow growth trend. The charge of particles increases with the increase of exhaust temperature, exhaust gas concentration and particle size. The study of the charged characteristics under different environmental conditions provides a theoretical basis for further improving the prototype mechanism of a leakage flow particle sensor. |
format | Online Article Text |
id | pubmed-7662904 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-76629042020-11-14 Simulation and Experimental Research on the Charged Characteristics of Particulate Matter in the Sensor under Different Exhaust States Tang, Dong Ju, Zhixuan Wang, Li Sensors (Basel) Article The particulate matter sensor needs to be used in order to detect the concentration of particulate matter in diesel engine exhaust, monitor the working condition of diesel particulate filter (DPF) in real time, and ensure the reliable operation of DPF. The flow field and electric field of the sensor are studied and their distribution in the sensor is analyzed. At the same time, the particle tracking model was used to simulate the charged characteristics of particles in the sensor under different exhaust states. It is found that the exhaust gas flow rate maintains stability after entering the outer protection zone and concentration test zone. The electric field is a non-uniform electric field and the direction of electric field intensity is from the high voltage electrode to the grounding electrode. The electric charge per particle will decrease with the increase of exhaust flow rate, but the electric charge shows a slow growth trend. The charge of particles increases with the increase of exhaust temperature, exhaust gas concentration and particle size. The study of the charged characteristics under different environmental conditions provides a theoretical basis for further improving the prototype mechanism of a leakage flow particle sensor. MDPI 2020-10-31 /pmc/articles/PMC7662904/ /pubmed/33142825 http://dx.doi.org/10.3390/s20216226 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Tang, Dong Ju, Zhixuan Wang, Li Simulation and Experimental Research on the Charged Characteristics of Particulate Matter in the Sensor under Different Exhaust States |
title | Simulation and Experimental Research on the Charged Characteristics of Particulate Matter in the Sensor under Different Exhaust States |
title_full | Simulation and Experimental Research on the Charged Characteristics of Particulate Matter in the Sensor under Different Exhaust States |
title_fullStr | Simulation and Experimental Research on the Charged Characteristics of Particulate Matter in the Sensor under Different Exhaust States |
title_full_unstemmed | Simulation and Experimental Research on the Charged Characteristics of Particulate Matter in the Sensor under Different Exhaust States |
title_short | Simulation and Experimental Research on the Charged Characteristics of Particulate Matter in the Sensor under Different Exhaust States |
title_sort | simulation and experimental research on the charged characteristics of particulate matter in the sensor under different exhaust states |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7662904/ https://www.ncbi.nlm.nih.gov/pubmed/33142825 http://dx.doi.org/10.3390/s20216226 |
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