Akademik Veri Yönetim Sistemi
Journal of the Energy Institute, cilt.125, 2026 (SCI-Expanded, Scopus)
As demand for cleaner and more efficient engine combustion grows, metallic nanofuel additives have emerged as promising solutions due to their ability to enhance combustion performance and lower emissions. However, high production costs, restricted availability, and toxicity concerns limit their adoption in real-world applications. To address these challenges, this study investigates the use of coal nanoparticles (CNPs) as a novel fuel additive for diesel fuel in diesel engines, presenting findings that have not been previously reported in the literature. CNPs were synthesized through a mechanical wet ball milling process and characterized using Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), and particle size analysis. A milling duration of 6 h produced nearly spherical CNPs with an average particle size of 50 nm, which were then blended with diesel at concentrations of 100, 200, and 300 ppm. The fuel properties of the blends were measured, and engine tests were conducted on a four-stroke research diesel engine under various operating conditions. Results showed that among the concentrations, 300 ppm yielded the best outcomes, with a 3.58 % reduction in brake-specific fuel consumption and a 3.72 % increase in brake thermal efficiency compared to pure diesel. CNPs improved combustion by advancing cylinder pressure and net heat release rate while reducing total combustion duration. Also, HC, CO, and NO emissions decreased by up to 15.61 %, 35.22 %, and 20.28 %, respectively. However, smoke opacity increased by as much as 32.40 %. The findings indicate that CNPs can replace metallic nanoparticles, providing comparable improvements in engine combustion, performance, and emissions.