An experimental study on performance and emission characteristics of an IDI diesel engine operating with neat oil-diesel blend emulsion

Abstract

Stable neat oil emulsions were prepared and tested in a multi-cylinder engine to assess the exhaust emission and performance characteristics. The heating value of the biofuel-diesel blend emulsion was 16.8% higher than neat rapeseed oil and 6.7% lower than neat diesel fuels. The density of the biofuel emulsions were increased by up to 11% as compared to neat fossil diesel. The engine produced similar power output when emulsified fuels were used instead of fossil diesel. At full load, the thermal efficiency of neat biofuel emulsion was 12% higher than that of fossil diesel. At higher loads, the bsfc of the biofuel blend emulsion was very close to that of fossil diesel. Compared to fossil diesel, emulsified fuels gave slightly higher CO2 emissions. Biofuel and biofuel-diesel blend emulsions produced up to 15% lower NOx emissions. At 100% load, the smoke intensity of biofuel blend emulsion was about 29% lower than neat fossil diesel operation. Emulsified fuels combusted well, and at higher loads produced similar exhaust gas temperatures to those in neat fossil diesel operation. The study concluded that neat oil - diesel - water emulsion fuel could be used in an unmodified diesel engine for increased thermal efficiency and decreased emissions.

Publication DOI: https://doi.org/10.1016/j.renene.2019.06.162
Divisions: Engineering & Applied Sciences > Mechanical Engineering & Design
Engineering & Applied Sciences > Aston Institute of Materials Research (AIMR)
Engineering & Applied Sciences > Sustainable environment research group
Engineering & Applied Sciences
Additional Information: © 2019, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Uncontrolled Keywords: Biofuel blend,CI engine,Emission,Emulsification,Performance,Water,Renewable Energy, Sustainability and the Environment
Full Text Link:
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
https://www.sci ... 002X?via%3Dihub (Publisher URL)
PURE Output Type: Article
Published Date: 2020-02-01
Published Online Date: 2019-06-29
Accepted Date: 2019-06-28
Authors: Hossain, A. K. ( 0000-0002-8713-8058)
Refahtalab, P.
Omran, A. ( 0000-0003-2446-5657)
Smith, D. I.
Davies, P. A.

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