Experimental investigation of cerium oxide nanofluid emulsion fuel performance and emission characteristics on variable compression ratio diesel engine.

MECHANICAL ENGINEERING

The limited fossil fuel resources along with the need to reduce emissions are major impulse to the development of alternative fuel. The heavy vehicular density in big cities and different operating conditions of CI engine are the alarming problem of emissions. In recent research emulsion has been developed as an alternative fuel for CI engine. Emulsion has shown slightly lower performance and reduction in SOx, CO, HC and CO2 as compare to diesel. But formation of NOx with Emulsion fuel was observed higher. After the advent of nanotechnology nanofuels prepared with nanoparticles has become interesting field of research topic around the world. Nanofuels have shown better improvement in combustion, performance and emission characteristics of CI engine. In this present work “Experimental investigation of cerium oxide nanofluid emulsion fuel performance and emission characteristics on variable compression ratio diesel engine” nanofuels were prepared by adding the cerium oxide nanoparticles to the Emulsion. Nanofuels were prepared with high speed ultrasonication and mechanical agitation process to increase the stability. The experiments were conducted on variable compression ignition ratio single cylinder four stroke diesel engine at constant 1500 RPM to evaluate the influence of cerium oxide nanoparticles. The load and compression ratio was varied from 0 to 6 kg and 14 to 18 on the engine. Experiments were performed using neat diesel and Emulsion E15CeO2 100. The BP, BSFC, BTE, EGT, CO, NOx and HC parameters were compared to pure diesel. It was observed that cerium oxide blended Emulsion E15CeO2100 considerably improve the performance parameters like Brake power by 6.09 %, Brake Thermal Efficiency by 4.83 % and Brake Specific Fuel Consumption reduced upto 9.57 % as compared to the diesel at CR 14 with full load condition. The harmful emission especially NOx using E15CeO2100 was reduced upto 32 % PPM as compared to diesel.

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