Water diesel emulsified fuel incorporated with different dosing levels of silicon dioxide nanoparticles: Emission and performance features assessment

Abstract In the critical stage of crisis in energy and growing atmospheric pollution, water diesel emulsified fuel with nanoparticles is represented as substitution fuel for diesel engines. In this investigation, emission and performance features of the diesel engine were assessed; when the engine was fuelled with water diesel emulsified fuel with different dosing levels (25, 50, 75, and 100 ppm) of silicon dioxide nanoparticles (Si-NP). The water portion was set as 10% by volume for every test fuel. The preparation of test fuels involved the ultrasonication technique with 20 kHz frequency. All the observations were regulated by adjusting the engine at 1500 RPM (speed) with 18 as a compression ratio. From the analysis, it was found that the test fuel 89D10W1S_50Si (89% diesel + 10% water + 1% SPAN 80 + 50 ppm of Si-NP) exhibited maximum increment in brake thermal efficiency with a minimum diminishment in brake specific fuel consumption. There was a remarkable decrement of 56.15% in nitrogen oxide (NOX) and 23.07% in smoke opacity emissions by 89D10W1S_50Si test fuel as compared to that of neat diesel. Therefore, as per the consequences of explorations, it can be concluded that the prepared fuel which consists of 50 ppm of dosing level of Si-NP with 10% of water diesel emulsified fuel could be selected as the optimal test fuel.