Particles Morphology of Mechanically Generated Oil Mist Mixtures of SAE 40 Grade Lubricating Oil with Diesel Oil in the Context of Explosion Risk in the Crankcase of a Marine Engine

This article presents research results on mechanically generated oil mists. The was carried out for mixtures the Agip/Eni Cladium 120 SAE 40 API CF industrial and marine engines diluted with diesel Orlen Efecta Diesel Bio at concentrations of 2%, 5%, 10%, 20%, 50% m/m. Pure lubricating pure were also tested. Droplet size distributions determined reference moment which residual discrepancies R between measurement data sprayed calculation model obtained lowest value. For mists, light transmission coefficient through mist T, specific surface area SSA, volumetric share drops DV(V%) 50%, 90% total volume determined. span droplet sizes SPAN, Sauter mean diameter D[3,2], De Brouckere D[4,3], mass percentage droplets diameters ≤5 μm (diameters necessary a crankcase explosion), minimum difference results, used by error measuring device best fit in each cycle (the smallest value analyzed. indicators, correlations levels mixture using Pearson rXY linear correlation coefficient. Those confirmed an increase smaller-diameter droplets, number up to 5 μm, distribution additional oil. relationship increased dilution explosion risk crankcase.