Jatropha oil methyl ester and its blends used as an alternative fuel in diesel engine

Biomass derived vegetable oils are quite promising alternative fuels for agricultural diesel engines. Use of vegetable oils in diesel engines leads to slightly inferior performance and higher smoke emissions due to their high viscosity. The performance of vegetable oils can be improved by modifying...

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Bibliographic Details
Published in:Thermal science 2009, Vol.13 (3), p.207-217
Main Authors: Yarrapathruni, Rao, Voleti, Sudheer, Pereddy, Reddy, Alluru, Raju
Format: Article
Language:English
Subjects:
Alternative fuels
Biodiesel fuels
Brakes
Calorific value
Diesel engines
Diesel fuels
Efficiency
Exhaust gases
Flash point
Gas temperature
Performance evaluation
Polymer blends
Smoke
Specific gravity
Thermodynamic efficiency
Transesterification
Vegetable oils
Viscosity
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Summary:Biomass derived vegetable oils are quite promising alternative fuels for agricultural diesel engines. Use of vegetable oils in diesel engines leads to slightly inferior performance and higher smoke emissions due to their high viscosity. The performance of vegetable oils can be improved by modifying them through the transesterification process. In this present work, the performance of single cylinder water-cooled diesel engine using methyl ester of jatropha oil as the fuel was evaluated for its performance and exhaust emissions. The fuel properties of biodiesel such as kinematic viscosity, calorific value, flash point, carbon residue, and specific gravity were found. Results indicate that B25 has closer performance to diesel and B100 has lower brake thermal efficiency mainly due to its high viscosity compared to diesel. The brake thermal efficiency for biodiesel and its blends was found to be slightly higher than that of diesel fuel at tested load conditions and there was no difference of efficiency between the biodiesel and its blended fuels. For jatropha biodiesel and its blended fuels, the exhaust gas temperature increased with the increase of power and amount of biodiesel. However, its diesel blends showed reasonable efficiency, lower smoke, and CO2 and CO emissions.
ISSN:0354-9836
2334-7163
DOI:10.2298/TSCI0903207Y