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Vol. 35 No. 4 (2025): JST: Engineering and Technology for Sustainable Development (10/2025)
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Research article
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Pham, H. T., Pham, H. T., & Hoang, V. T. Simulation Study on Performance and Emissions of a Diesel Engine Using Diesel-Ethanol-Waste Cooking Oil Blends. Engineering and Technology For Sustainable Development, 35(4), 033-042. Retrieved September 30, 2025, from https://jst.vn/index.php/etsd/article/view/1067

Simulation Study on Performance and Emissions of a Diesel Engine Using Diesel-Ethanol-Waste Cooking Oil Blends

Huu Tuyen Pham1, Huu Truyen Pham2, Van Thu Hoang1,2,
1 School of Mechanical Engineering, Hanoi University of Science and Technology, Ha Noi, Vietnam
2 Vinh University of Technology Education, Nghe An, Vietnam

Main Article Content

Abstract

Using biofuel for diesel engines is a sustainable solution to solve the current scarcity of petroleum energy sources and environmental pollution problems. The paper presents performance and emissions of a Hyundai D4BB diesel engine when using diesel-ethanol-waste cooking oil blends modeled by AVL Boost software. The test blends comprised 5% of waste cooking oil, and 10%, 20%, 30% of ethanol, and fossil diesel in the rest. Estimated viscosities of the blends were in the range of 2-4.5 mm2/s, equivalent to diesel fuel. The results showed that ratio of biofuel in blends could increase up to 30% of ethanol with 5% of waste cooking oil (called D65E30WCO5) that the engine torque decreased less than 10% whereas exhaust gas emissions reduced significantly. At full load, the average reductions in CO, NOx, and soot emissions were 28%, 24%, and 13% with D85E10WCO5; 40%, 33%, and 25% with D75E20WCO5; 46%, 41%, and 35% with D65E30WCO5. At the load characteristic curve at engine speed of 2000 rpm, the corresponding reductions were 8.71%, 5.33%, and 5.28% for D85E10WCO5; 9.81%, 5.12%, and 31.78% for D75E20WCO5; 10.11%, 4.81%, and 48.73% for D65E30WCO5. These may result from differences in the fuel properties between the blends and diesel fuel.

Keywords

Biofuel, waste cooking oil, ethanol, emissions, diesel engine

Article Details

References

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