Original scientific paper

https://doi.org/10.21278/TOF.40307

Experimental Evaluation of Performance and Emission Characteristics of a Diesel Engine Fuelled with Neem Methyl Ester

S. Sheeju Selva Roji orcid.org/0000-0003-1038-1954 ; Department of Mechanical Engineering, University College of Engineering, Nagercoil, India
R. Edwin Raj ; Department of Mechanical Engineering, St. Xavier’s Catholic College of Engineering, Nagercoil, India
D.F. Melvin Jose ; Department of Mechanical Engineering, Sri Vellappally Natesan College ofEngineering, Alappuzha, India

Abstract

The dwindling fossil fuel resources and the environmental degradation have spurred research interest to find better renewable alternative energy sources. Biodiesel is one such viable promising alternative fuel, which can be extracted from various renewable vegetable oils. In the present study, biodiesel extracted from neem oil is characterized for engine performance and emission analysis is done at various compression ratios (CR) and fuel blends. The brake thermal efficiency (BTE) of the blend B20 is considerably higher than that of diesel at CR 18, 20, and 22. The specific fuel consumption (SFC) increases with diesel blends due to a higher calorific value of diesel in comparison with biodiesel. All the biodiesel blends had lower carbon monoxide (CO) emissions compared with diesel, which indicates better combustion due to the presence of inherent oxygen. At lower CRs, the in-cylinder temperature is lower, which in turn reduces the nitrogen oxide (NOx) emission. The overall engine performance is optimum at CR of 18 with the NB20 fuel blend.

Keywords

biodiesel; compression ratio; engine performance; emission

Hrčak ID:

168709

URI

https://hrcak.srce.hr/168709

Publication date:

22.11.2016.

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