Effect of additivized biodiesel blends on diesel engine poerformance, emission, tribological characteristics, and lubricant tribology

• Main Authors: Mujtaba, M. A., Masjuki, H. H., Kalam, M. A., Noor, Fahad, Farooq, Muhammad, Ong, Hwai Chyuan, Gul, M., Soudagar, Manzoore Elahi M., Bashir, Shahid, Rizwanul Fattah, I. M., Razzaq, L.
• Format: Article
• Published: MDPI 2020
• Subjects: TJ Mechanical engineering and machinery
• Online Access: http://eprints.um.edu.my/36588/

This research work focuses on investigating the lubricity and analyzing the engine characteristics of diesel-biodiesel blends with fuel additives (titanium dioxide (TiO2) and dimethyl carbonate (DMC)) and their effect on the tribological properties of a mineral lubricant. A blend of palm-sesame oil was used to produce biodiesel using ultrasound-assisted transesterification. B30 (30% biodiesel + 70% diesel) fuel was selected as the base fuel. The additives used in the current study to prepare ternary fuel blends were TiO(2)and DMC. B30 + TiO(2)showed a significant reduction of 6.72% in the coefficient of friction (COF) compared to B30. B10 (Malaysian commercial diesel) exhibited very poor lubricity and COF among all tested fuels. Both ternary fuel blends showed a promising reduction in wear rate. All contaminated lubricant samples showed an increment in COF due to the dilution of combustible fuels. Lub + B10 (lubricant + B10) showed the highest increment of 42.29% in COF among all contaminated lubricant samples. B30 + TiO(2)showed the maximum reduction (6.76%) in brake-specific fuel consumption (BSFC). B30 + DMC showed the maximum increment (8.01%) in brake thermal efficiency (BTE). B30 + DMC exhibited a considerable decline of 32.09% and 25.4% in CO and HC emissions, respectively. The B30 + TiO(2)fuel blend showed better lubricity and a significant improvement in engine characteristics.