Browse Publications Technical Papers 2001-01-3668
2001-09-24

Numerical Prediction and Validation of Fuel Spray Behavior in a Gasoline Direct-Injection Engine 2001-01-3668

Analysis of flow field and charge distribution in a gasoline direct-injection (GDI) engine is performed by a modified version of the KIVA code. A particle-based spray model is proposed to simulate a swirl-type hollow-cone spray in a GDI engine. Spray droplets are assumed to be fully atomized and introduced at the sheet breakup locations as determined by experimental correlations and energy conservation. The effects of the fuel injection parameters such as spray cone angle and ambient pressure are examined for different injectors and injection conditions. Results show reasonable agreement with the measurements for penetration, dispersion, global shape, droplet velocity and size distribution by Phase Doppler Particle Anemometry(PDPA) in a constant-volume chamber. The test engine is a 4-stroke 4-valve optically accessible single-cylinder engine with a pent-roof head and tumble ports. Parametric study is performed with respect to the fuel injection timing,spray cone angle and injector position. It is shown that the current numerical methods are capable of reproducing the proper qualitative trend of mixture distribution against visualization images by pulsed-laser Mie scattering.

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:
TECHNICAL PAPER

Air/Fuel Distribution Simulation in a Port Injected Gasoline Lean-burn Engine

2001-01-1230

View Details

JOURNAL ARTICLE

High Speed Imaging Study on the Spray Characteristics of Dieseline at Elevated Temperatures and Back Pressures

2014-01-1415

View Details

TECHNICAL PAPER

Burning Velocities of Real Gasoline Fuel at 353 K and 500 K

2003-01-3265

View Details

X