A novel emulsion fuel containing aqueous nano cerium oxide additive in diesel–biodiesel blends to improve diesel engines performance and reduce exhaust emissions: Part II–Exergetic analysis

摘要: This survey was aimed at determining exergy-based sustainability parameters of a single cylinder DI diesel engine in response to various fuel blends and engine loads at a fixed engine speed of 1000 rpm. Engine tests were conducted at four engine loads (25%–100%) using a 95% diesel + 5%biodiesel blend (B5) emulsified with water (3, 5, and 7 w/w%). All the prepared emulsions were stabilized with a 2:1 combination of Span 80 and Tween 80 (overall 7.5 w/w% surfactant). Two levels of cerium oxide nanoparticle concentrations (0 and 90 ppm) were also applied. The results showed that engine load and fuel type profoundly affected the exergy-based sustainability indices of the engine. Generally, increasing engine load steadily decreased exergy efficiency, while normalized exergy destruction declined by up to 75% under full load condition. Among the fuel blends prepared, the B5 blend containing 3 w/w …