Spray and Evaporation Characteristics of Multi-Hole Injector for DISI Engines - Effect of Diverging Angle Between Neighboring Holes

2009-01-1500

04/20/2009

Event
SAE World Congress & Exhibition
Authors Abstract
Content
Experimental and computational studies were carried out to characterize the spray development and evaporation processes of multi-hole injector for direct injection spark ignition (DISI) engines. The main injector parameter to be investigated in this study is a diverging angle between neighboring two holes. In the experimental study, the influence of the diverging angle on evaporation process of fuel spray from two-hole injector was investigated using Laser Absorption Scattering (LAS) measurement. Smaller diverging angle causes larger spray tip penetration because the momentum of the spray from one hole emphasizes another, when two spray merge to one. Moreover, spray tip penetration decreases at certain diverging angle due to the negative pressure region between two sprays. Mechanisms behind the above spray behaviors were discussed using the detailed information on the spray and ambient gas flow fields obtained by the three dimensional computational fluid dynamics (CFD).
Meta TagsDetails
DOI
https://doi.org/10.4271/2009-01-1500
Pages
13
Citation
Sato, K., Tadokoro, T., Yamakawa, M., Yokohata, H. et al., "Spray and Evaporation Characteristics of Multi-Hole Injector for DISI Engines - Effect of Diverging Angle Between Neighboring Holes," SAE Technical Paper 2009-01-1500, 2009, https://doi.org/10.4271/2009-01-1500.
Additional Details
Publisher
Published
Apr 20, 2009
Product Code
2009-01-1500
Content Type
Technical Paper
Language
English