首页|Characteristics of High-Pressure Spray of a Gasoline Direct Injection Injector Under Non-Flash Boiling and Flash Boiling Conditions
Characteristics of High-Pressure Spray of a Gasoline Direct Injection Injector Under Non-Flash Boiling and Flash Boiling Conditions
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
万方数据
The increasingly stringent emission regulations and fuel consumption requirements have elevated the demands of internal combustion engines with higher fuel efficiency and lower emissions.It has been widely demonstrated that flash boiling spray can generate shorter and wider spray with improved atomization and evaporation to promote a better air-fuel mixing process.In this study,macroscopic(far-field)spray morphologies and primary breakup(near-field)characteristics of a two-hole gasoline direct injection injector are investigated under non-flash boiling and flash boiling conditions.High speed macroscopic and microscopic imaging was used to capture the overall spray structure and near-field characteristics,respectively.N-Hexane is used as the test fuel with the injection pressure ranging from 10 MPa up to 40 MPa.For sub-cooled liquid fuel sprays,increasing fuel pressure contributes to enhanced fuel atomization and evaporation.Evident collapses occurred under flare flash boiling conditions,and higher injection pressure weakened this phenomenon since the spray cone angle decreased due to a higher injection velocity.
National Engineering Laboratory for Automotive Electronic Control Technology,School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China
NETL
NSTL
万方数据
