Browse Publications Technical Papers 2012-01-0457
2012-04-16

Flow Field Characterization of Superheated Sprays from a Multi-Hole Injector by Using High-Speed PIV 2012-01-0457

Superheated spray is expected to improve the fuel atomization and evaporation processes by introducing fuel temperature as a new control parameter in spark-ignited direct-injection (SIDI) engines. In this study, flow fields of n-hexane spray from a multi-hole injector in both vertical and cross-sectional directions were investigated by using high-speed particle image velocimetry (HS-PIV) within the lower density regions. The results provide insight to the spray-collapsing processes under various superheated conditions. It was found that in axial direction, the vertical velocity increases while the radial velocity decreases with increasing superheat degree, which determines the convergent spray structure. In cross-sectional direction, the dynamic variation of the spray structure and interaction among spray plumes were investigated. The relationship between the spray structure and flow field was found. The flow patterns during and after the injection are significantly different. Streamlines of fuel spray at various superheated degrees were analyzed and compared which provide an intuitive understanding of the flow patterns. This study reveals that the superheat degree is the predominant factor influencing the flow field, thus the structure of the superheated spray.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
JOURNAL ARTICLE

Liquid and Vapor Envelopes of Sprays from a Multi-Hole Fuel Injector Operating under Closely-Spaced Double-Injection Conditions

2012-01-0462

View Details

TECHNICAL PAPER

Nanoparticles Characterization at Spark Ignition Engine Exhaust

2005-24-010

View Details

JOURNAL ARTICLE

Model Guided Application for Investigating Particle Number (PN) Emissions in GDI Spark Ignition Engines

2019-26-0062

View Details

X