Browse Publications Technical Papers 2001-01-0654
2001-03-05

A Comparison and Model of NOx Formation for Diesel Fuel and Diethyl Ether 2001-01-0654

Exhaust NOx and particulate measurements were obtained at equivalent operating conditions in a direct-injection compression ignition engine for diesel and diethyl ether fuel. Particulate levels for diethyl ether were very low relative to the diesel fuel and did not increase significantly until the fuel to oxygen equivalence ratio was above 0.8. The log of fuel specific NOx for both the diesel and diethyl ether fuel were found to correlate well with the inverse of adiabatic flame temperature as has been observed by others in previous research. A newly defined heat release averaged, adiabatic flame temperature improved the correlation of both fuels. Differences in the correlations of the two fuels with this newly defined temperature were smaller than the scatter of the data. A simple model based on the assumptions of a NOx formation zone proportional in volume to the rate of heat release was successful at predicting fuel specific NOx over a range of simulated EGR conditions, speeds, and loads to within approximately ± 30%. The results suggest that the differences in NOx obtained with different fuels are a result of the fuels effect on flame temperature and not a fundamental change in kinetic reaction or mixing rates.

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

Effects of B20 versus ULSD Fuel on Diesel Engine PM Emissions and Aftertreatment Performance

2010-01-0790

View Details

TECHNICAL PAPER

The Effect of Fuel Properties on Particulates Emissions in Heavy-Duty Truck Engines Under Transient Operating Conditions

912425

View Details

JOURNAL ARTICLE

Emission Characteristics of a Diesel Engine Operating with In-Cylinder Gasoline and Diesel Fuel Blending

2010-01-2266

View Details

X