The combined effect of acetone and ZnO with diesel-biodiesel blends on the performance, combustion and emission characteristics of diesel engine.

In this experimental study, the performance, combustion and emission analysis of the combined effect of acetone and Zinc Oxide (ZnO) dispersed diesel-biodiesel (B20) blends were done in four-stroke, single-cylinder and water-cooled diesel engine. ZnO was synthesized by the solvothermal method using cow urine as a solvent and reducing agent. The synthesized ZnO was characterized by X-ray diffraction (XRD) and Scanning Electron Microscope (SEM). The biodiesel was produced from waste cooking oil through a trans-esterification process. The synthesized ZnO was dispersed in 10, 20 and 30 ppm with diesel-biodiesel blend along with 10% of acetone to form B20A10Zn10, B20A10Zn20 and B20A10Zn30 test fuels. The experimental results show that adding acetone and ZnO with diesel-biodiesel blend tends to promising physiochemical properties of the test fuels and produced better results in performance and emission. The test fuel, B20A10Zn30, gave a better outcome than all other fuels and recorded a 0.4% increase in Brake Thermal Efficiency (BTE), while there was an 8% increase in Brake Specific Fuel Consumption (BSFC). Compared to diesel, the emissions, such as Carbon Monoxide (CO), Unburned Hydrocarbon (UHC), Oxides of Nitrogen (NOx), and smoke, were 7.97%, 20%, 1.8% and 1.49% lower than the conventional diesel.

Effect of acetone as an oxygenated additive with used sunflower oil biodiesel on performance, combustion and emission in diesel engine.

ABSTRACTA major problem that is confronting mankind is the rapid depletion of fossil resources creating an energy demand along with their environmental impact. Therefore, finding an alternate energy source is the primary goal to attain sustainable development. Biodiesel is a promising alternate energy source for compression ignition engines. But it has some drawbacks like lower thermal efficiency, higher emission of smoke, NOx, CO and HC. Adding fuel additives with biodiesel-diesel blends is a fruitful method to overcome these problems. In this work, acetone is used as an oxygenated fuel additive in the volumetric proportion of 5%, 10%, and 15% with biodiesel-diesel blend and named as B20A5, B20A10 and B20A15. The performance, combustion, and emission characteristics of single-cylinder, four-stroke, water-cooled vertical diesel engine has been evaluated. The experimental results revealed that B20A15 has resulted in a nominal increase in brake specific fuel consumption by 8%, brake thermal efficiency of 1%, and reduction in CO by 18.4%, smoke opacity by 4.46%, HC by 1.42%, and NOx by 4.36% when compared to diesel at full load condition.