Effect of physical properties of fuel mixtures on ice performance

Abstract

The scientific research presented in this study focused on determining the density (ρ) and kinematic viscosity (μ) of biodiesel-diesel blends, key properties for fuel characterization and engine performance. The objective was to assess the influence of biodiesel concentration on these parameters using methods compliant with GOST 3900 and GOST 33-82. At 15 °C, the density of pure biodiesel (B100) was measured at 0.886 g/cm³, which is 6.24% higher than conventional diesel, while B20 and B50 blends showed increases of 1.44% and 3.36%. At 20 °C, the kinematic viscosity of B100 was 1.97 times higher than diesel, whereas B20 and B50 exhibited moderate increases of 1.09 and 1.19 times. The results indicate deviations from the additivity principle, suggesting a synergistic effect in which diesel exerts a dominant influence on the blend properties, an aspect essential for optimizing combustion and lubrication characteristics.