Performance and Emission Analysis of Partially Insulated Four Stroke Diesel Engine Fuelled with Blends of Sunflower Methyl Ester

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
© 2015 by IJETT Journal
Volume-27 Number-6
Year of Publication : 2015
Authors : K.Simhadri, P.Srinivas


K.Simhadri, P.Srinivas"Performance and Emission Analysis of Partially Insulated Four Stroke Diesel Engine Fuelled with Blends of Sunflower Methyl Ester", International Journal of Engineering Trends and Technology (IJETT), V27(6),287-291 September 2015. ISSN:2231-5381. published by seventh sense research group

Methyl esters extracted from vegetable oils are an important alternative fuel for diesel. The direct usage of these fuels without any modification damages engine parts. The performance of these fuels in a diesel engine can be improved by providing insulation to the inner walls of combustion chamber. It increases the operating temperature within the combustion chamber reducing the viscosity of methyl esters which have higher viscosity than diesel. These low quality fuels can be more readily used in Low Heat Rejection engines. In this experimental study, cylinder head, inlet and exhaust valves and piston were coated with Yttrium stabilized Zirconia using plasma spray technique. The effects of Sunflower methyl ester from Transesterification method blended in diesel as a fuel in diesel was studied in both performance and emission aspects. An increase in engine brake thermal efficiency and decrease in specific fuel consumption was observed for pure diesel and the characteristics of methyl ester were better in case of coated engine rather than uncoated engine. Significant reduction in emissions were observed for methyl esters except CO at full load and NOx at all load conditions in case of coated engine compared to uncoated engine.


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Diesel engine, coating, Sunflower, Yttrium Stabilised Zirconia, YSZ, emissions.