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Subject Area

Mechanical Power Engineering

Article Type

Original Study

Abstract

This study examined how diesel fuel and waste-cooked oil (WCO) biodiesel blends added by various concentrations of graphene oxide (GO) nanoparticles can effect on the performance and emission characteristics of constant-speed, four-stroke, single-cylinder, water-cooled diesel engines. The GO nanoparticles concentrations are 50,100 and 150 ppm dispersed in different diesel-WCO biodiesel blends are pure diesel fuel (B0), 20% WCO biodiesel and 76% diesel fuel (B20), and 40% WCO biodiesel and 56% diesel fuel (B40). In addition 4% toluene in all blends which used as a surfactant. The diesel engine fueled with these blends and operated at various engine loads are 2, 4, and 6 kW. However, the interactions between the independent variables, such as the percentages of fuel blends, concentrations of GO nanoparticles, and the engine loads studied previously to see how they effect on the characteristics of the diesel engine's performance and emissions like the engine brake thermal efficiency (BTE), the emissions of oxides of nitrogen (NOx), and the emissions of carbon dioxide (CO2). The response surface methodology (RSM) used specifically to examine and optimize the responses of the diesel engine related to the mentioned independent variables. The performance and emission attributes improved by using various percentages of WCO biodiesel and GO nanoparticles in addition the optimization of RSM. The optimum responses are 18.97% for the BTE, 539 ppm for the NOx emissions and 2.14 for CO2 emission.

Keywords

NOx emissions; WCO Biodiesel; graphene oxide nanoparticles, Response surface methodology (RSM); Internal Combustion Engine

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

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