MACROSCOPIC AND MICROSCOPIC CHARACTERISTICS OF GASOLINE AND BUTANOL SPRAY ATOMIZATION UNDER ELEVATED AMBIENT PRESSURES

• DOI: 10.1615/atomizspr.2018026194
• Publication Date: 2018-10-22T14:37:21Z
• Authors: Yanfei Li; Hengjie Guo; Yitao Shen; Xiao Ma; Longfei Chen; Liuyang Feng
• Keywords: Sauter mean diameter; Spray characteristics; Penetration (warfare); Ambient pressure; Gasoline direct injection

N-butanol has been recognized as a promising alternative fuel in gasoline engines and outstanding advantages over low-carbon alcohols terms of energy density miscibility. In this work, the comparative investigation on spray behaviors n-butanol was carried out using commercial direct injection (GDI) injector. The tests were high-pressure constant volume vessel with pressures from 6.0 to 15.0 MPa ambient 0.1 0.5 MPa. High speed imaging Phase Doppler Particle Analyzer (PDPA) techniques used examine penetration droplet atomization process. results showed that had longer length than most test conditions mainly due delay caused by relatively small viscosity gasoline. poor quality (larger Sauter Mean Diameter) might further contribute for its larger mean velocity because less consumed atomization. Both increasing pressure decreasing could enhance increase velocity. However, once beyond certain value, effect neglectible. global distribution presented an asymmetric feature axis far field possibly jet-to-jet interaction.