Impact of Ethanol Blended Fuel in Spray Characteristics of Piezo-actuated Outward-opening Injector for DISI Engine
In this study, the spray characteristics of piezo-actuated outward-opening injector have been investigated while applied ethanol blended gasoline with different ethanol portion (20％, 50％, and 85％ ethanol in volume) as well as pure commercial gasoline firstly. Injection rate has been measured at first; Then Mie scattering macroscopic spray images have been captured in a constant volume chamber as well as planar laser induced fluorescence spray images. A comparative analysis of blended fuels and gasoline sprays regarding injection parameters and spray characteristics is presented. The experimental results show the larger viscosity of ethanol fuel has a relative large impact on the spray characteristics of injection: injection rate was reduced and spray pattern was also changed slightly. Results of PLIF imaging show that better evaporation property enhances the homogeneity of spray.
Hua Wang Heechang Oh Jungseo Park Choongsik Bae
Korea Advanced Institute of Science and Technology (KAIST)
国际会议
天津
英文
1-6
2009-08-19（万方平台首次上网日期，不代表论文的发表时间）