The Effect of Adding EN (2-Ethylhexyl Nitrate) to Diesel-Ethanol Blends on Performance and Exhaust Emissions

Year 2017, Volume: 1 Issue: 1, 16 - 21, 30.04.2017

Murat Ciniviz İlker Örs Bahar Sayın Kul

Abstract

In this study, effect of EN addition to diesel-ethanol
blends as cetane improver were examined with regard to performance parameters
such as brake torque, brake power, fuel consumption, brake specific fuel
consumption and exhaust emissions such as NOx, CO, CO₂ in a four-cylinder,
water-cooled diesel engine. Firstly, an ethanol-diesel blend represented as E10
were prepared by mixing 10% of ethanol with 90% of diesel fuel as volume. Then
other blends symbolized as E10EN2 (10% ethanol, 2% EN and 88% diesel), E10EN4
(10% ethanol, 4% EN and 86% diesel) and E10EN6 (10% ethanol, 6% EN and 84%
diesel) were created by mixing ethanol-diesel-EN to get information about the
behavior of EN. The results obtained for these blends at five different engine
speed under full load condition were compared with E10 and 100% diesel fuel. It
was found that EN addition raised the cetane number by 5%, 11%, 16% for E10EN2,
E10EN4 and E10EN6 compared to E10 whereas EN caused a slight decrease in
kinematic viscosity, lower heating value and a slight increase in density. It was
also deduced that EN addition had a reducing  effect on  NOx, CO emissions and brake power while it had
an increasing effect on CO₂ emission and brake specific fuel
consumption.

Keywords

Alternative Fuel, Diesel, Ethanol, Engine Performance

References

• Ickes, A.M., Bohac, S.V., and Assanis, D.N., "Effect of 2-Ethylhexyl Nitrate Cetane Improver on NOx Emissions from Premixed Low-Temperature Diesel Combustion", Energy & Fuels, 23, 4943-4948, 2009.