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Effect of Cetane-Coupled Pilot Injection Parameters on Diesel Engine Combustion and Emissions
[Image: see text] The effects of cetane number (CN) coupled with pilot injection ratio and pilot injection timing on the combustion and emission characteristics of a four-cylinder diesel engine were investigated. The results showed that as the pilot injection ratio increases, the peak cylinder gas p...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2022
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9773932/ https://www.ncbi.nlm.nih.gov/pubmed/36570291 http://dx.doi.org/10.1021/acsomega.2c05379 |
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author | Sun, Bohua Zhang, Lin Zhao, Shuai Liu, Qiang Luo, Fei Wu, Heng |
author_facet | Sun, Bohua Zhang, Lin Zhao, Shuai Liu, Qiang Luo, Fei Wu, Heng |
author_sort | Sun, Bohua |
collection | PubMed |
description | [Image: see text] The effects of cetane number (CN) coupled with pilot injection ratio and pilot injection timing on the combustion and emission characteristics of a four-cylinder diesel engine were investigated. The results showed that as the pilot injection ratio increases, the peak cylinder gas pressure (CGP) increases, and the peak of heat release rate (HRR) increases accordingly; the coupled CN increases, the brake specific fuel consumption (BSFC) decreases, and the brake thermal efficiency (BTE) increases; CO and HC emissions increase; and NO(x) emissions increase. In addition, the number concentration and total mass of particulate matter (PM) decrease with the increasing pilot injection ratio. Only when the pilot injection ratio reaches 20% does the fuel produce pilot injection heat release. The ignition delay time (ID) and combustion duration (CD) are redefined for the pilot injection heat release operating conditions. With the delay of the pilot injection timing, the peak CGP increases, the coupled CN increases, the BTE increases, the BSFC decreases, CO and HC emissions increase, and NO(x) emissions decrease. With the delay of the pilot injection timing, the number concentration and total mass of PM decrease. In addition, no pilot injection heat release was generated for any of the five fuels at pilot injection timings from 30°CA BTDC to 45°CA BTDC. |
format | Online Article Text |
id | pubmed-9773932 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-97739322022-12-23 Effect of Cetane-Coupled Pilot Injection Parameters on Diesel Engine Combustion and Emissions Sun, Bohua Zhang, Lin Zhao, Shuai Liu, Qiang Luo, Fei Wu, Heng ACS Omega [Image: see text] The effects of cetane number (CN) coupled with pilot injection ratio and pilot injection timing on the combustion and emission characteristics of a four-cylinder diesel engine were investigated. The results showed that as the pilot injection ratio increases, the peak cylinder gas pressure (CGP) increases, and the peak of heat release rate (HRR) increases accordingly; the coupled CN increases, the brake specific fuel consumption (BSFC) decreases, and the brake thermal efficiency (BTE) increases; CO and HC emissions increase; and NO(x) emissions increase. In addition, the number concentration and total mass of particulate matter (PM) decrease with the increasing pilot injection ratio. Only when the pilot injection ratio reaches 20% does the fuel produce pilot injection heat release. The ignition delay time (ID) and combustion duration (CD) are redefined for the pilot injection heat release operating conditions. With the delay of the pilot injection timing, the peak CGP increases, the coupled CN increases, the BTE increases, the BSFC decreases, CO and HC emissions increase, and NO(x) emissions decrease. With the delay of the pilot injection timing, the number concentration and total mass of PM decrease. In addition, no pilot injection heat release was generated for any of the five fuels at pilot injection timings from 30°CA BTDC to 45°CA BTDC. American Chemical Society 2022-12-05 /pmc/articles/PMC9773932/ /pubmed/36570291 http://dx.doi.org/10.1021/acsomega.2c05379 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Sun, Bohua Zhang, Lin Zhao, Shuai Liu, Qiang Luo, Fei Wu, Heng Effect of Cetane-Coupled Pilot Injection Parameters on Diesel Engine Combustion and Emissions |
title | Effect of Cetane-Coupled
Pilot Injection Parameters
on Diesel Engine Combustion and Emissions |
title_full | Effect of Cetane-Coupled
Pilot Injection Parameters
on Diesel Engine Combustion and Emissions |
title_fullStr | Effect of Cetane-Coupled
Pilot Injection Parameters
on Diesel Engine Combustion and Emissions |
title_full_unstemmed | Effect of Cetane-Coupled
Pilot Injection Parameters
on Diesel Engine Combustion and Emissions |
title_short | Effect of Cetane-Coupled
Pilot Injection Parameters
on Diesel Engine Combustion and Emissions |
title_sort | effect of cetane-coupled
pilot injection parameters
on diesel engine combustion and emissions |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9773932/ https://www.ncbi.nlm.nih.gov/pubmed/36570291 http://dx.doi.org/10.1021/acsomega.2c05379 |
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