Effect of start of main injection timing on performance, emission, and combustion characteristics of a VGT CI engine fueled with neem biodiesel.
Combustion
Fuel injection pressure
Neem biodiesel
Performance and emissions
Start of main injection timings
Variable geometry turbocharger
Journal
Environmental science and pollution research international
ISSN: 1614-7499
Titre abrégé: Environ Sci Pollut Res Int
Pays: Germany
ID NLM: 9441769
Informations de publication
Date de publication:
Mar 2021
Mar 2021
Historique:
received:
14
11
2019
accepted:
25
02
2020
pubmed:
8
3
2020
medline:
5
3
2021
entrez:
8
3
2020
Statut:
ppublish
Résumé
The performance of engine parameters is more influenced with fuel injection strategies namely start of main injection timing (SoMI). An experimental analysis was performed to find the optimum SoMI timing based on performance, emission, and combustion characteristics. Base fuel of diesel and neem biodiesel was used as test fuels. The neem biodiesel was prepared by esterification and transesterification process. It is found from literature that neem biodiesel blend NB20 with diesel gives optimum performance and emission characteristics; therefore, NB20 blend was used for experiments. A variable geometry turbocharger (VGT) compression ignition (CI) engine was used to conduct the experiments. Engine performance parameters were estimated and compared with a base fuel of diesel and with NB20 blends. In this experimentation, fuel injection pressure (FIP) of 800 bar and engine speed of 1700 rpm were considered. SoMI timing was varied from 2° to 10° bTDC with an increment of 2° bTDC timing. Cylinder pressure (CP) and heat release rate (HRR) were estimated and found that are higher for diesel fuel compared to NB20 blend at different SoMI timings. The addition of neem biodiesel NB20 blend to diesel fuel decreases the exhaust emissions except NOx emissions. The BSFC was considerably reduced and BTE was improved almost equivalent to the diesel fuel for NB20. From the results, it is concluded that 10° bTDC SoMI timing provides 13% improvement in BTE, 21% decrement in BSFC, and 7.5% reduction in CO
Identifiants
pubmed: 32144698
doi: 10.1007/s11356-020-08231-3
pii: 10.1007/s11356-020-08231-3
doi:
Substances chimiques
Biofuels
0
Gasoline
0
Vehicle Emissions
0
Carbon Monoxide
7U1EE4V452
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
11942-11953Références
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