Browse Publications Technical Papers 2009-01-1496
2009-04-20

Stratified Cold Start Sprays of Gasoline-Ethanol Blends 2009-01-1496

Gasoline and gasoline-ethanol sprays from an outward-opening piezo-injector were studied in a constant volume/pressure chamber using high-speed imaging and phase doppler anemometry (PDA) under stratified cold start conditions corresponding to a vehicle ambient temperature of 243 K (−30°C/−22°F); in-cylinder air pressure of 5 bar, air temperature of 350 K (−30°C/−22°F) and fuel temperature of 243 K. The effects of varying in-cylinder pressure and temperature, fuel injection pressure and fuel temperature on the formation of gasoline, E75 and pure ethanol sprays were investigated. The results indicate that fuel composition affects spray behaviour, but less than expected. Furthermore, varying the temperature of the fuel or the air surrounding the spray also had minor effects. As expected, the fuel injection pressure was found to have the strongest influence on spray formation under stratified conditions.

SAE MOBILUS

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

Access SAE MOBILUS »

Members save up to 16% off list price.
Login to see discount.
We also recommend:
TECHNICAL PAPER

Optical Research of Spray Development of E85 Fuel in High Pressure Gasoline Direct Injection System

2010-01-2285

View Details

TECHNICAL PAPER

Characteristics of Impinging Spray and Corresponding Fuel Film under Different Injection and Ambient Pressure

2019-01-0277

View Details

TECHNICAL PAPER

Spray Dynamics of High Pressure Fuel Injectors for DI Gasoline Engines

961925

View Details

X