Abstract
Biofuels mixed with petro-diesels have become a sine qua non in environmental protection. They have friction and wear mitigation attributes and so enhance power saving and CI-engine life. The present research focuses on exploration of friction and wear features of Simarouba-glauca methyl-ester (SGME) blends in petro-diesel, with and without nanoadditivation employing 4 ball tribometer as per ASTM D 4172. The experiments were carried on B10 (10 %biodiesel in diesel), B20, B30 and diesel B0. Nanoadditivation of copper oxide (CuO) was done in the amounts of 0.20, 0.50, 0.75 and 1 % wt. (weight) with SGME. There was 80 and 49 % reduction in the friction coefficient and minimum wear than that for pure diesel (B0). Wear scars of the balls were characterized by means of scanning electron microscope (SEM). The interfaces exhibited a permutation of abrasion and adhesion mode of wear.
 HIGHLIGHTS
 
 Pioneering study for tribological characteristics of Simarouba glauca biodiesel
 Simarouba glauca biodiesel exhibited superior tribological characteristics
 Simarouba glauca biodiesel proves to be an attractive alternative to other oils
 CuO nanoparticles proved to be highly beneficial showing 80 and 49 % decrease in friction and wear
 
 GRAPHICAL ABSTRACT
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