The Role of Cheap Chemicals Containing Oxygen Used as Diesel Fuel Additives in Reducing Carbon Footprints

Salih Özer ()
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Salih Özer: Department of Mechanical Engineering, Engineering and Architecture Faculty, Muş Alparslan University, 49100 Muş, Türkiye

Sustainability, 2025, vol. 17, issue 7, 1-26

Abstract: This study investigates the improvement of combustion performance, engine emissions, energy, exergy, and thermodynamic efficiencies by adding oxygenated additives to diesel/biodiesel blends. Five different fuel mixtures (D100, D80B20, D50B50, D30B50S20, and D30B50G20) were tested in a diesel engine. The positive effects of the additives on engine efficiency became evident. In terms of combustion performance, the maximum in-cylinder pressure was observed with D100; however, a decrease of 11.51% was noted with the D50B50 mixture, while an increase of 7.51% was achieved with the addition of butyl diglycol. The addition of butyl diglycol also increased the heat release rate by 34.36%. Regarding exhaust emissions, the D30B50G20 fuel produced the lowest CO emissions (0.02%), while HC emissions decreased by 80% compared to D100. Smoke opacity was also found to be lower with D30B50G20. However, these additives led to a 2.65% decrease in certain performance metrics. On the other hand, the sustainability analysis revealed that the most efficient fuel mixture was D30B50G20.

Keywords: biofuels; biodiesel; canola oil; solketal; butyl diglycol; energy and exergy (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2025
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