The study of compositions and methods of supplying new fuels with additives of Brassica rapa oil to the diesel

Introduction. Physico-chemical properties of the diesel fuel emulsion with Brassica rapa oil and ethanol have been studied. The use of blended fuel does not make structural changes in the engine, but only the improvement of the attachments: the power supply system of the internal combustion engine. Aim of the Article. The article aims at determining the effect of additives of Brassica rapa oil and ethanol in commercial diesel fuel in different quantities on such indicators as density, kinematic viscosity, and the lowest specific heat of combustion of mixtures and determining the optimal mixture of fuels for bench tests on the diesel. Materials and Methods. There were used the following equipment: laboratory scales VIBRAAJH-620CE, pycnometer PZh2-10-KSh 7/16, viscosimeter VPZh-2, and electronic stopwatch. Results. The dependence between the density, kinematic viscosity and concentration of additives in blended fuels has been determined. The relationship between the kinematic viscosity of oils and the lower specific heat of combustion has been noted. The dynamics of a decrease in the average lower specific heat of combustion of blends relative to an increase in the concentration of blended fuels is presented. Discussion and Conclusion. For bench tests on the engine, there were selected two blends 10% Brasssica rapa +10% Ethanol+80% Diesel and 25% Brasssica rapa +25% Ethanol +50% Diesel. When selecting the mixtures, the focus was on 4 parameters: kinematic viscosity, density, stability time, and lower specific heat of combustion.