Browse Publications Technical Papers 2007-01-1866
2007-07-23

Improvements in Low Temperature Diesel Combustion with Blending ETBE to Diesel Fuel 2007-01-1866

The effects of blending ETBE to diesel fuel on the characteristics of low temperature diesel combustion and exhaust emissions were investigated in a naturally-aspirated DI diesel engine with large rates of cooled EGR. Low temperature smokeless diesel combustion in a wide EGR range was established with ETBE blended diesel fuel as mixture homogeneity is promoted with increased premixed duration due to decreases in ignitability as well as with improvement in fuel vaporization due to the lower boiling point of ETBE. Increasing the ETBE content in the fuel helps to suppress smoke emissions and maintain efficient smokeless operation when increasing EGR, however a too high ETBE content causes misfiring at larger rates of EGR. While the NOx emissions increase with increases in ETBE content at high intake oxygen concentrations, NOx almost completely disappears when reducing the intake oxygen content below 14 % with cooled EGR. The combination of 30 vol% ETBE blended in diesel fuel and 14% intake oxygen concentration with EGR enables smokeless and ultra-low NOx diesel combustion at higher engine loads (with indicated mean effective pressure up to 0.67 MPa) meanwhile keeping the indicated thermal efficiency higher than 40%.

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

Operating Range of Low Temperature Diesel Combustion with Supercharging

2009-01-1440

View Details

TECHNICAL PAPER

Multi-Mode Genetic Algorithm Optimization of Combustion Chamber Geometry for Low Emissions

2002-01-0958

View Details

TECHNICAL PAPER

Clean Combustion in a Diesel Engine Using Direct Injection of Neat n-Butanol

2014-01-1298

View Details

X