International Scientific Journal


This paper presents an experimental study on the effect of different high octane fuels (such as eucalyptus oil, ethanol, and methanol) on engine’s performance behaviour of a biofuel based dual fuel engine. A single cylinder Diesel engine was modified and tested under dual fuel mode of operation. Initially the engine was run using neat diesel, neat mahua oil as fuels. In the second phase, the engine was operated in dual fuel mode by using a specially designed variable jet carburettor to supply the high octane fuels. Engine trials were made at 100% and 40% loads (power outputs) with varying amounts of high octane fuels up-to the maximum possible limit. The performance and emission characteristics of the engine were obtained and analysed. Results indicated significant improvement in brake thermal efficiency simultaneous reduction in smoke and NO emissions in dual fuel operation with all the inducted fuels. At 100% load the brake thermal efficiency increased from 25.6% to a maximum of 32.3, 30.5, and 28.4%, respectively, with eucalyptus oil, ethanol, and methanol as primary fuels. Smoke was reduced drastically from 78% with neat mahua oil a minimum of 41, 48, and 53%, respectively, with eucalyptus oil, ethanol, and methanol at the maximum efficiency point. The optimal energy share for the best engine behaviour was found to be 44.6, 27.3, and 23.2%, respectively, for eucalyptus oil, ethanol, and methanol at 100% load. Among the primary fuels tested, eucalyptus oil showed the maximum brake thermal efficiency, minimum smoke and NO emissions and maximum energy replacement for the optimal operation of the engine.
PAPER REVISED: 2016-12-20
PAPER ACCEPTED: 2016-12-22
CITATION EXPORT: view in browser or download as text file
  1. Alpaslan, A., et al., Experimental investigation of engine performance and exhaust emissions of a diesel engine fueled with diesel-n-butanol-vegetableoil blends, Energy Conversion and Management, 81(2014), pp.312-321.
  2. Anandkumar, G., Devaradjane, G., Performance and combustion analysis of Mahua biodiesel on a singlecylinder compression ignition engine using electronic fuel injection system. Thermal science, 20 (2016), 4, pp. S1045-S1052
  3. Senthil R et al., Effect of Antioxidant additives on exhaust emissions reduction in compression ignition engine fuelled with methyl ester of Annona oil. Thermal science, 20 (2016), 4, pp. S1029-S1035
  4. Milan D. Tomic et al., Effects of fossil diesel and biodiesel blends on the performances and emissions of agricultural tractor engines. Thermal science, 17 (2013), 1, pp. 263-278
  5. Senthil Kumar, M., Jaikymar, M., A Comprehensive study on performance, Emission and Combustion behavior of a Compression Ignition Engine Fuelled with WCO Emulsions as Fuel. Journal of the Energy Institute, 87 (2014), pp. 263-271.
  6. Senthil Kumar, M., et al., A Comparison of the Different Methods of using Jatropha oïl as fuel in a compression Ignition Engine. - ASME Journal of Gas turbines and Power, 132 (2010), pp. 032801-032810.
  7. Bhaskor, J., et al., Comparative assessment of a biogas run dual fuel diesel engine with rice bran oil methyl ester, pongamia oil methyl ester and palm oil methyl ester as pilot fuels. Renewable Energy, 81(2015), pp.490-498.
  8. Mohamed, Y.E., et al., Performance of Dual Fuel Engine Running on Jojoba Oil as Pilot Fuel and CNG or LPG. Proceedings of HT2007, 2007 ASME-JSME Thermal Engineering Summer Heat Transfer Conference, July 8-12, 2007, British Columbia, Canada.
  9. Ghazi A. Karim., Dual Fuel Diesel engines, CRC Press, Taylor & Francis Group, International Standard Book Number-13 (2015), 978-1-4987-0309-3.
  10. Senthil Kumar, M., Jaikumar, M., Studies on the effect of Hydrogen induction on performance, emission and combustion behavior of a WCO emulsion based Dual Fuel Engine. International Journal of Hydrogen Energy, 39 (2014), pp. 18440-18450.
  11. Kapilan, N., Reddy, R.P., Studies on Esters of Coconut oil as Fuel for LPG- Biodiesel dual fuel engine. Proceedings of HT2007, 2007 ASME-JSME Thermal Engineering Summer Heat Transfer Conference, July 8-12, 2007, British Columbia, Canada.
  12. Roberto Freitas Britto, Cristiane Aparecida Martins., Experimental analysis of a diesel engine operating in Diesel-Ethanol. Fuel, 134 (2014), pp.140-150.
  13. Imran, A., et al., Review on alcohol fumigation on diesel engine: A viable alternative dual fuel technology for satisfactory engine performance and reduction of environment concerning emission. Renewable and Sustainable Energy Reviews, 26 (2013), pp.739-751.
  14. Hongyuan Wei et al., Experimental investigations of the effects of pilot injection on combustion and gaseous emission characteristics of diesel/methanol dual fuel engine. Fuel 188 (2017), pp. 427-441
  15. Gang Li et al.,Effects of diesel injection parameters on the rapid combustion and emissions of an HD common-rail diesel engine fueled with diesel-methanol dual-fuel. Applied Thermal Engineering 108 (2016), pp. 1214-1225
  16. Alberto Boretti, Advantages of converting Diesel engines to run as dual fuel ethanol Diesel. Applied Thermal Engineering, 47 (2012), pp. 1-9.
  17. Sharanappa Godiganur et al., 6BTA 5.9 G2-1 Cummins engine performance and emission tests using methyl ester mahua (Madhuca indica) oil/diesel blends. Renewable Energy 34 (2009), pp. 2172-2177
  18. Gunasekaran, A., et al.: Performance and Combustion Analysis of Mahua Biodiesel on a single cylinder compression ignition engine using electronic fuel injection system. Thermal science, 20 (2016), 4, pp. S1045-S1052.
  19. Puneet Verma et al., Potential use of eucalyptus biodiesel in compressed ignition engine. Egyptian Journal of Petroleum , 25 (2016), pp. 91-95
  20. Devan P.K., Mahalakshmi, N.V.,A study of the performance, emission and combustion characteristics of a compression ignition engine using methyl ester of paradise oil-eucalyptus oil blends, Applied Energy, 86 (2009), pp. 675-680
  21. Jamuwa, D.K.., et al., Experimental investigation of performance, exhaust emission and combustion parameters of stationary compression ignition engine using ethanol fumigation in dual fuel mode, Energy Conversion and Management, 115 (2016), pp.221-231.
  22. Wojciech Tutak, Bioethanol E85 as a fuel for dual fuel diesel engine. Energy Conversion and Management, 86 (2014), pp.39-48.

© 2017 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence