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International Journal of Engineering & Technology Sciences
IJETS 2022, 10 pages - Article ID: Article ID: IJETS-2201022112425
Spray Characteristics Comparison of Different Fuels Injected from a Diesel Injector
aTechnical and Vocational University, ?Automotive Mechanics Department of Allameh Hassanzade Amoli, Mazandaran, Iran
ABSTRACT
Fuel spray and atomization characteristics play an important role in the performance of internal combustion engines. As the reserves of petroleum fuel are expected to be depleted within a few decades, finding alternative fuels that are economically viable and sustainable to replace petroleum fuel has attracted much research attention. In this work, the spray and atomization characteristics were investigated for commercial diesel fuel and biodiesel derived from Canola seeds oil (B100). The spray tip penetrations and cone angles were acquired using a high-speed imaging technique. Also, spray volume and Sauter mean diameter (SMD) are determined by experimental correlations. The experimental results showed that biodiesel had different features compared with diesel. Longer spray tip penetration and larger droplet diameters were observed for B100. The smaller droplet size of the diesel was believed to be caused by its relatively lower viscosity and surface tension. The high-pressure injection helps to optimize the trade-off of spray volume and droplet sizes. Furthermore, it was observed that the smallest droplets were within a region near the injector nozzle tip and grew larger along with the axial and radial directions. The variation of droplet diameters became smaller with increasing injection pressure.