DBPapers
DOI: 10.5593/SGEM2016/B41/S17.066

PERFORMANCE AND EMISSIONS OF DIESEL ENGINE RUNNING ON BRASSICA JUNCEA BIODIESEL

M. Bannikov, I.Vasilev, F.Aziz
Wednesday 7 September 2016 by Libadmin2016

References: 16th International Multidisciplinary Scientific GeoConference SGEM 2016, www.sgem.org, SGEM2016 Conference Proceedings, ISBN 978-619-7105-63-6 / ISSN 1314-2704, June 28 - July 6, 2016, Book4 Vol. 1, 511-518 pp

ABSTRACT
High-speed, direct-injection, four-stroke, air-cooled diesel engine was tested with Brassica juncea biodiesel and regular diesel oil over the range of speed and load. Engine running on biodiesel showed deteriorated performance, in particular, specific fuel consumption has been increased and fuel conversion efficiency decreased. Engine emissions were improved except of carbon monoxide emission at high and low loads with hydrocarbon emission essentially unchanged. Increase in specific fuel consumption was attributed to lower heating value of biodiesel and reduced fuel conversion efficiency. Analysis of fuel injection and combustion characteristics revealed that deterioration of engine performance was caused by the advanced start of combustion and longer burn duration of biodiesel. In order to increase fuel conversion efficiency an attempt was made to run the engine on the biodiesel-butanol 80:20 blend. With blend emissions of nitrogen oxides and exhaust opacity were further reduced but increase in fuel conversion efficiency was not achieved. It was concluded that investigation of the effect of biodiesel-alcohol blends on engine performance should be continued with different types of alcohols (ethanol, methanol) and different blends composition.

Keywords: diesel engine, Brassica juncea, biodiesel, performance, emissions.