Efficiency and Emissions of Compression Ignition Engines Powered by Blends of Biodiesel Made from Jojoba Seeds and ۱-pentanol as an Additive

Sustainability of fossil fuel reservations and its environmental effects require that CI engines have substitutes. In contrast to the previous literature on the traditional biodiesel-diesel blends, the given work examines the jojoba seed oil methyl ester (JME) with an established ۱-pentanol additive to enhance combustion and emissions without alterations to the engine. JME biodiesel was prepared and mixed with diesel at ۲۰, ۴۰, ۶۰, ۸۰ and ۱۰۰ percent concentration with ۱۰ ml of ۱-pentanol. A Kirloskar single-cylinder diesel engine was used in experiments at constant speed and loads. The analysis of the performance parameters (brake thermal efficiency, brake specific fuel consumption), and emissions (Oxides of carbon and nitrogen, hydrocarbons, smoke opacity) were performed in order to determine the optimal blend. The results indicated that B۴۰ produced the most promising overall performance, which was the same as diesel with regard to brake thermal efficiency at higher loads and stable operation. Each of the blends minimized NOx and CO۲, but B۴۰ was the most balanced. At low loads, CO and HC’s were marginally high because of the cooling effect of ۱-pentanol but reduced at high loads because of the oxygenated character of biodiesel. Smoke transparency increased with concentration of biodiesel due to viscosity and it was acceptable. In general, the B۴۰ was the most suitable mixture, which proved the potential of JME-diesel-۱-pentanol formulation as sustainable CI engine fuel.

کلیدواژه ها:

Alternative fuels ، Biodiesel ، Compression ignition engines ، Jojoba ، Pentanol