Effect of additivized biodiesel blends on diesel engine poerformance, emission, tribological characteristics, and lubricant tribology
Document Type
Article
Publication Date
7-1-2020
Abstract
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.
Keywords
High frequeny reciprocating rig, Palm-sesame biodiesel, Nanoparticle additives, Four-ball tribo tester, Engine characteristics, Tribological characteristics
Divisions
mechanical,PHYSICS
Funders
Universiti Malaya [Grant No: 5-1/HRD/UESTPI (Batch-VI)/4954/2018/HEC, FP142-2019A]
Publication Title
Energies
Volume
13
Issue
13
Publisher
MDPI
Publisher Location
ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND