FUEL 217 |
| The addition of oxygenates in diesel fuel has proven to significantly reduce engine-out exhaust emissions especially soot formation over the last ten years. Presented in current paper is a study on combustion and emissions characteristics of a new oxygenate methyl 2-butoxyethyl carbonate as a clean diesel fuel additive. The new oxygenate was chemically synthesized and structurally identified by FT-IR, 1H NMR and GC-MS analyses. A single cylinder, water cooled, DI diesel engine was employed to appraise the combustion performances and exhaust emission reduction abilities of the substance. The results showed that CO can be reduced by 41.7% to 87.5% under high load. Smoke can be lessened by 33.3% to 91.2% when diesel fuel is doped with 25% by volume of the oxygenate, NOx increases by 8.5% to 20.9%. When fueled with the oxygenate, engine in-cylinder peak pressure increases a little and ignition delay becomes shorter or keeps unchanged. Engine heat release rate rises remarkably during the premixed combustion and goes up slightly in the diffusion combustion. |
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Ultraclean Transportation Fuels
1:30 PM-5:30 PM, Wednesday, April 9, 2008 Morial Convention Center -- Rm. 239, Oral
Division of Fuel Chemistry |