PERTANIKA JOURNAL OF SCIENCE AND TECHNOLOGY

In the present investigation, the effects of Palm Oil Methyl Esters (POME) additives on fuel consumptions and exhaust emissions of a single-cylinder diesel engine fueled with algae-diesel fuel blends were studied. Five fuel blends were prepared based on volume percentages which are D100 (diesel fuel), 2.5AO97.5D (2.5% algae oil, 97.5% diesel fuel), 2.5POME2.5AO95D (2.5% POME, 2.5% algae oil, 97.5% diesel fuel), 3.5POME2.5AO94D and 4.5POME2.5AO93D. Next, fuel properties which are density, kinematic viscosity, and calorific value of all the blended fuels, were measured and analyzed. Engine tests were conducted on a single-cylinder diesel engine at a constant engine speed of 1500 rpm at various engine loads. The brake specific fuel consumption (BSFC), exhaust emissions of oxides of nitrogen (NO_x), carbon monoxide (CO), and carbon dioxide (CO₂) were analyzed together during the experimental work. The obtained results for BSFC show that all fuel blends decreased with increasing engine load. The results obtained revealed that NO_X and CO₂ emissions increase, whereas CO emissions decrease with increasing engine load. The present work suggests 4.5POME2.5AO93D algae-diesel fuel blends with POME additive as a suitable eco-friendly alternative fuel as it gives better emission results compared to other fuel blends.

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