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Experimental Study on Diesel Engine Emission Characteristics Based on Different Exhaust Pipe Coating Schemes

The thermal insulation performance of exhaust pipes coated with various materials (basalt and glass fiber materials) under different braiding forms (sleeve, winding and felt types) and the effects on the emission characteristics of diesel engines were experimentally studied through engine bench test...

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Autores principales: Zhao, Keqin, Lou, Diming, Zhang, Yunhua, Fang, Liang, Tang, Yuanzhi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8541148/
https://www.ncbi.nlm.nih.gov/pubmed/34683206
http://dx.doi.org/10.3390/mi12101155
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author Zhao, Keqin
Lou, Diming
Zhang, Yunhua
Fang, Liang
Tang, Yuanzhi
author_facet Zhao, Keqin
Lou, Diming
Zhang, Yunhua
Fang, Liang
Tang, Yuanzhi
author_sort Zhao, Keqin
collection PubMed
description The thermal insulation performance of exhaust pipes coated with various materials (basalt and glass fiber materials) under different braiding forms (sleeve, winding and felt types) and the effects on the emission characteristics of diesel engines were experimentally studied through engine bench tests. The results indicated that the thermal insulation performance of basalt fiber was higher than that of glass fiber, and more notably advantageous at the early stage of the diesel engine idle cold phase. The average temperature drop during the first 600 s of the basalt felt (BF) pipe was 2.6 °C smaller than that of the glass fiber felt (GF) pipe. Comparing the different braiding forms, the temperature decrease in the felt-type braided material was 2.6 °C and 2.9 °C smaller than that in the sleeve- and winding-type braided materials, respectively. The basalt material was better than the glass fiber material regarding the gaseous pollutant emission reduction performance, especially in the idling cold phase of diesel engines. The NO(x) conversion rate of the BF pipe was 7.4% higher than that of the GF pipe, and the hydrocarbon (HC) conversion rate was 2.3% higher than that of the GF pipe, while the CO conversion rate during the first 100 s was 24.5% higher than that of the GF pipe. However, the particulate matter emissions were not notably different.
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spelling pubmed-85411482021-10-24 Experimental Study on Diesel Engine Emission Characteristics Based on Different Exhaust Pipe Coating Schemes Zhao, Keqin Lou, Diming Zhang, Yunhua Fang, Liang Tang, Yuanzhi Micromachines (Basel) Article The thermal insulation performance of exhaust pipes coated with various materials (basalt and glass fiber materials) under different braiding forms (sleeve, winding and felt types) and the effects on the emission characteristics of diesel engines were experimentally studied through engine bench tests. The results indicated that the thermal insulation performance of basalt fiber was higher than that of glass fiber, and more notably advantageous at the early stage of the diesel engine idle cold phase. The average temperature drop during the first 600 s of the basalt felt (BF) pipe was 2.6 °C smaller than that of the glass fiber felt (GF) pipe. Comparing the different braiding forms, the temperature decrease in the felt-type braided material was 2.6 °C and 2.9 °C smaller than that in the sleeve- and winding-type braided materials, respectively. The basalt material was better than the glass fiber material regarding the gaseous pollutant emission reduction performance, especially in the idling cold phase of diesel engines. The NO(x) conversion rate of the BF pipe was 7.4% higher than that of the GF pipe, and the hydrocarbon (HC) conversion rate was 2.3% higher than that of the GF pipe, while the CO conversion rate during the first 100 s was 24.5% higher than that of the GF pipe. However, the particulate matter emissions were not notably different. MDPI 2021-09-25 /pmc/articles/PMC8541148/ /pubmed/34683206 http://dx.doi.org/10.3390/mi12101155 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhao, Keqin
Lou, Diming
Zhang, Yunhua
Fang, Liang
Tang, Yuanzhi
Experimental Study on Diesel Engine Emission Characteristics Based on Different Exhaust Pipe Coating Schemes
title Experimental Study on Diesel Engine Emission Characteristics Based on Different Exhaust Pipe Coating Schemes
title_full Experimental Study on Diesel Engine Emission Characteristics Based on Different Exhaust Pipe Coating Schemes
title_fullStr Experimental Study on Diesel Engine Emission Characteristics Based on Different Exhaust Pipe Coating Schemes
title_full_unstemmed Experimental Study on Diesel Engine Emission Characteristics Based on Different Exhaust Pipe Coating Schemes
title_short Experimental Study on Diesel Engine Emission Characteristics Based on Different Exhaust Pipe Coating Schemes
title_sort experimental study on diesel engine emission characteristics based on different exhaust pipe coating schemes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8541148/
https://www.ncbi.nlm.nih.gov/pubmed/34683206
http://dx.doi.org/10.3390/mi12101155
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AT loudiming experimentalstudyondieselengineemissioncharacteristicsbasedondifferentexhaustpipecoatingschemes
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