Effect of palm-sesame biodiesel fuels with alcoholic and nanoparticle additives on tribological characteristics of lubricating oil by four ball tribo-tester

Dilution of engine oil with unburned fuels alters its lubricity and tribological properties. In this research paper, SAE-40 lubricating samples were contaminated known percentages (5%) (diesel, palm-sesame biodiesel blend (B30), B30 + ethanol, dimethyl carbonate, carbon nanotubes and, titanium oxide). The effect all these on wear frictional characteristics was determined by using a 4-ball tribo tester types worn surfaces analyzed SEM. Lubricating diluted B10 (commercial diesel) showed highest COF (42.95%) severe abrasive adhesive than mineral lubricant among other fuels. (B30 blend) alcoholic additives comparatively less COF, scar diameter polishing due to presence ester molecules. Lub Eth exhibited increment in value (35.81%) compared lubricant. While nanoparticles least wear. TiO2 (13.78%) It is concluded that blends (B30) helps reducing degradation lubricants fuel commercial diesel.