Abstract
Water diesel emulsified fuel (WDEF) evolves as a favorable alternative fuel for diesel engines. In this study, the effects of change in injection pressure (IP) on the performance, emission, combustion features of a diesel engine were evaluated by using WDEF with 50 ppm of silicon dioxide (SiO2) nanoparticles. The IP of the diesel engine was varied from 180 bar-220 bar (with a gap of 10 bars). It was revealed that the higher value of IP augmented combustion features of heat release rate, in-cylinder pressure; mass fraction of fuel burnt and means gas temperature. The performance features were also improved by the increment in the IP owing to improved mixing of air with fuel particles. Apart from NOX, emissions of HC, smoke, and CO were reduced at a higher IP of 220 bar. Hence, higher IP results in the improvement of all the features (except NOX) of a diesel engine.
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