Browse Publications Technical Papers 2007-01-0001
2007-01-23

Improvements of the KIVA Dense Spray Modeling for HSDI Diesel Engines 2007-01-0001

A numerical study has been performed to investigate the soot emission from a high-speed single-cylinder direct injection diesel engine. It was shown that the current KIVA CFD code with the standard evaporation model could predict the experimental trend, where at a low speed running condition a higher smoke reading is reached when increasing the injector protrusion into the piston chamber and conversely a lower smoke reading was recorded for the same change in injector protrusion at a high running speed condition. Evidence of inappropriate air/fuel mixing was seen via rates of heat release analyses, especially in the high-speed conditions. Efforts to reduce this discrepancy by way of improvements to the KIVA breakup and evaporation models were made. Results of the modified models showed improvements in the vapor dispersion of the atomizing liquid jet, thus affecting the mixing rates and predicted smoke emissions.

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

Applying Soot Phi-T Maps for Engineering CFD Applications in Diesel Engines

2005-01-3856

View Details

TECHNICAL PAPER

CFD Simulation of Diesel Injection and Combustion

2002-01-0945

View Details

TECHNICAL PAPER

Simulation of Combustion in a DI-Diesel Engine with Application of a Moving Grid

2000-01-1888

View Details

X