Author(s)

Yomi Woro Gounkaou¹, Tizane Daho^1*, Ali Diane¹, Gilles Vaitilingom², Bruno Piriou², Jeremy Valette², Oumar Sanogo³, Antoine Béré¹

¹Département de Physique, Université Joseph KI-ZERBO, Ouagadougou, Burkina Faso.
²Biomasse Bois Energie Bioproduits, Montpellier, France.
³Centre National de la Recherche Scientifique et Technologique, Ouagadougou, Burkina Faso.

This work focuses on blending Jatropha oil with diesel fuel and heptane to improve its physico-chemical characteristics for production of blends and their use as fuel in a diesel engine. The influence of the heptane content was evaluated by comparing the results obtained from the engine (performance and combustion parameters) with those of the diesel fuel and straight Jatropha oil. The results obtained show an improvement in engine performance especially at low loads. Specifically, a reduction in the specific fuel consumption of the engine is obtained when the heptane content in the mixture is around 10% compared to that obtained with pure Jatropha oil. The best results were obtained with the blend containing 70% Jatropha oil, 20% diesel fuel and 10% heptane (J70G20H10). Overall engine efficiency and exhaust gas temperatures are comparable for all fuels tested. Engine combustion parameters are improved with J70G20H10. The results obtained with J70G20H10 are close to those of the engine operating on diesel fuel. The cyclic dispersion is low with coefficients of variation of the indicated mean effective pressure (COV_IMEP) whose values are less than 10%. The lowest values of the COV_IMEP are obtained with the blend J70G20H10.

Diesel Engine, Jatropha Oil, Heptane, Blends, Engine Performance, Cyclic Dispersion

Gounkaou, Y. , Daho, T. , Diane, A. , Vaitilingom, G. , Piriou, B. , Valette, J. , Sanogo, O. and Béré, A. (2021) Experimental Study on Performance and Combustion Analysis of a Diesel Engine Fueled with Diesel and Jatropha Oil Blended with Heptane. Energy and Power Engineering, 13, 1-16. doi: 10.4236/epe.2021.131001.