Browse Publications Technical Papers 2014-01-2604
2014-10-13

The Effect of Fuel Injection Pressure on Spray and Combustion Characteristics in a Gasoline Direct-Injection Engine 2014-01-2604

A single-cylinder gasoline direct-injection engine was used for fuel spray and combustion visualizations with optical access to the combustion chamber. Experiments were conducted to investigate the effect of fuel injection pressure on spray and combustion characteristics inside the engine cylinder. A multi-hole high-pressure production injector was used with fuel pressures of 5 and 10 MPa. A Mie scattering technique was used to image the liquid phase of the fuel dispersion. The obtained spray images were then used to study the macroscopic spray characteristics such as spray structure, spray tip penetration and spray angle. Combustion visualization tests were performed to evaluate the effect of fuel injection pressure on combustion characteristics. In-cylinder pressure signals were recorded for the combustion analyses and synchronized with the high-speed combustion imaging recording. Results showed that higher fuel injection pressure led to faster spray tip penetration and an increased spray area for better fuel-air mixing. The results of combustion visualization showed faster flame growth with the increment of fuel injection pressure. The profiles of mass fraction burned confirmed that the burn duration is shorter for higher fuel injection pressure.

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

The Effect of Split Injection on Fuel Distribution in an Engine-Fed Combustion Chamber

930864

View Details

TECHNICAL PAPER

Analysis of a High Pressure Diesel Spray at High Pressure and Temperature Environment Conditions

2005-01-1239

View Details

JOURNAL ARTICLE

Dynamic Thermal Behavior of a GDI Spray Impacting on a Heated Thin Foil by Phase-Averaged Infrared Thermography

2019-24-0036

View Details

X