Study on Subcritical/Supercritical Spray Characteristics of a Multi-Hole Gasoline Direct Injector Tianjin University

Format:

Conference/Event

Author/Creator:

Zhang, Zhang, author.

Contributor:

Liu, Yi

Pei, Yiqiang

Zhang, Yan

Conference Name:

SAE 2016 World Congress and Exhibition (2016-04-12 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2016

Summary:

AbstractInvestigations using supercritical spray platform,which allows gasoline at low sub-critical state,subcritical state and supercritical state respectively,were made to demonstrate the Subcritical/ Supercritical Spray Characteristics of a Multi-Hole Gasoline Direct Injector.The experimental results show that the spray pattern and spray characteristics (id est spray penetration distance,spray area and spray perimeter) varied greatly under different state. In subcritical state,the spray characteristics of gasoline is similar to the phenomenon of "flash bfueling",appearing spray entrainment and spray collapse,then spray penetration distance and area drop significantly.In supercritical state,the six-hole gasoline spray is composed by the thick-core region and the thin-diffusion region,and Mach disk is observed at the outlet of the nozzle,then spray penetration distance and area increases sharply. In addition,by comparing the spray characteristics of six-hole and single-hole GDI injector,result shows the single-hole injector is more conducive to the development of supercritical gasoline

Notes:

Vendor supplied data

Publisher Number:

2016-01-0849

Access Restriction:

Restricted for use by site license