Production of an environmentally friendly fuel with the aid of ultrasonic waves from a new plant source, and the investigation of its effect on pollutants reduction in a CI engine

Abstract

In this study, methyl ester of Sisymbrium plant seed oil with the chemical formula of C₁₈H₃₄O₂ is produced for the first time, with the aid of ultrasonic waves and in the presence of a nanocatalyst. After measuring its characteristics and comparing with ASTM standard, it is tested and evaluated with different ratios of diesel fuel in a single-cylinder diesel engine. The reactions are accomplished in a flask by an ultrasonic processor unit and in the presence of CaO-MgO nanocatalyst. The engine tests were conducted based on the engine short time experiment. The results showed that with the increment of biodiesel ratio in the fuel blend, pollutants level of CO, HC, and smoke opacity are decreased comparing diesel fuel due to the improvement of the combustion process, and the amount of NOx emission is increased owing to high pressure and temperature of the combustion chamber. Also, produced biodiesel fuel causes an increment in the fuel consumption and exhaust gasses temperature. Overall, with regard to its effects on the engine and also being a native and easy cultivation plant, it can be resulted that Sisymbrium oil biodiesel and its blends with diesel fuel can be applied as an alternative fuel.

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