A Review on the Impact of Bio-Additives on Tribological Behavior of Diesel Fuels
Corresponding Author
Hailegebrel Zewdie
College of Electrical and Mechanical Engineering, Addis Ababa Science and Technology University, Addis Ababa, Ethiopia aastu.edu.et
Search for more papers by this authorGetachew Shunki Tibba
College of Electrical and Mechanical Engineering, Addis Ababa Science and Technology University, Addis Ababa, Ethiopia aastu.edu.et
Search for more papers by this authorDinku Seyoum Zeleke
College of Electrical and Mechanical Engineering, Addis Ababa Science and Technology University, Addis Ababa, Ethiopia aastu.edu.et
Search for more papers by this authorVaratharaju Perumal
Department of Automotive Technology, Technical and Vocational Training Institute, Addis Ababa, Ethiopia ftveti.edu.et
Search for more papers by this authorPedro Dionisio Remedios Castañeiras
Department of Automotive Technology, Technical and Vocational Training Institute, Addis Ababa, Ethiopia ftveti.edu.et
Search for more papers by this authorCorresponding Author
Hailegebrel Zewdie
College of Electrical and Mechanical Engineering, Addis Ababa Science and Technology University, Addis Ababa, Ethiopia aastu.edu.et
Search for more papers by this authorGetachew Shunki Tibba
College of Electrical and Mechanical Engineering, Addis Ababa Science and Technology University, Addis Ababa, Ethiopia aastu.edu.et
Search for more papers by this authorDinku Seyoum Zeleke
College of Electrical and Mechanical Engineering, Addis Ababa Science and Technology University, Addis Ababa, Ethiopia aastu.edu.et
Search for more papers by this authorVaratharaju Perumal
Department of Automotive Technology, Technical and Vocational Training Institute, Addis Ababa, Ethiopia ftveti.edu.et
Search for more papers by this authorPedro Dionisio Remedios Castañeiras
Department of Automotive Technology, Technical and Vocational Training Institute, Addis Ababa, Ethiopia ftveti.edu.et
Search for more papers by this authorAbstract
Automobile engines require lubrication to lessen the impact of friction due to the high levels of wear and frictional heat generated by the sliding parts. Wear and friction will cause engine parts to endure for less time, be less reliable, and require more maintenance. Diesel fuel can potentially be replaced with biodiesel among other fuels. Diesel engines have a serious problem with equipment that is lubricated by the fuel itself. This study’s goal is to assess the influence of bio-additives on the diesel fuel tribological behavior and energy balance during the car’s idle running, acceleration, constant speed, and braking. Lubricity issues with reformulated diesel and lubricity test procedures are explained. The relationship between tribology and bio-additives is also briefly illustrated. According to the literature, adding bio-additives to fuel boosts its lubricity. Biodiesel has long been considered an additive with excellent lubricant properties. Even in small amounts, adding biodiesel to diesel fuel can increase its lubricity without the need for conventional lubricity additives. This is especially true for diesel fuel with ultralow sulfur. Diesel fuel characteristics determine the precise blending percentage needed to provide the proper lubricity of maximum 520 μm testing wear scars with a high-frequency reciprocating rig (HFRR), although 2% biodiesel nearly invariably imparts adequate lubricity to biodiesel blends. Tall oil fatty acid (TOFA) was one of the bio-additives investigated by HFRR. When the additive concentration was raised from 0 to 500 g/g, the wear scar diameter (WSD) of nonadditive diesel fuel was lowered by 60.3%, from 630 to 250 μm, and the coefficient of friction (COF) was lowered by 95.7%, from 0.47 to 0.02.
Conflicts of Interest
The authors declare that they have no conflicts of interest.
Open Research
Data Availability
The data is available within the article.
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