Resumen de Influence of Moringa oleifera biodieseldiesel blend on combustion, performance and emissions in a diesel engine
Y. Díaz Dominguez, M. Rodón Macias, Danger Tabio García, E.A. Melo Espinosa, E. Fernández Santana, R. Piloto Rodríguez
Biofuels as alternatives to fossil-based conventional fuels have been considered as a get-away strategy that could partially address some of the environmental concerns. The combustion of biomass-derived liquid fuels such as biodiesel has gained significant importance in practical combustion systems such as diesel engines. The aims of this study were to investigate combustion, performance, and exhaust emissions by using Moringa oleifera biodiesel-diesel blend (B10) as fuel substitutes for a four-stroke single cylinder engine with direct injection. The physicochemical properties of Moringa oleifera methyl esters and its blend fully matched with the ASTM D6751 and EN 14214 standards. The experimental results revealed an earlier start of combustion and shorter ignition delay for B10 as compared to diesel, whereas the general profile of the rate of heat release diagram is quite similar for both fuels. Engine performance test results showed an increase of the brake specific fuel consumption and the exhaust gas temperature when B10 was used; however, brake thermal efficiency decreased. The carbon monoxide (CO) emission for B10 was found 13.08% lower than diesel fuel, but NOx concentrations slightly increased by 7.20%. The Moringa oleifera biodiesel-diesel blend (B10) can replace diesel fuel without modifying engines to reduce dependency on fossil fuels.
