FUEL 198 |
| The reduction in harmful pollutants emitted from diesel engines is dictated by stringent environmental regulations worldwide. A promising technique to lessen engine gaseous and particulate emissions is to reformulate diesel fuel. By this method, a significant reduction in diesel engine exhaust emissions can be attained. The oxygenation of diesel fuels through the application of oxygenated additives has been acknowledged as an efficient solution. The addition of oxygenate into petroleum-based diesel fuel has proven to significantly attenuate engine-out emissions. In the paper, investigation was made about the combustion and emission characteristics of a compression ignition engine burning diesel fuel containing a new oxygenate blend of propylene glycol mono-methyl ether (PGMME) and ethylene glycol di-methyl ether(EGDME) in a proportion of 1.6:1 by volume. The results present some excellent characteristics in reducing emissions for diesel engine operation on PGMME/EGDME. When diesel fuel is added with 15% to 20% by volume of it, smoke can be lessened by the maximum of 91%, and the maximum reduction in CO emissions can amount to 66.7%. NOx emissions do not change noticeably. HC emissions increase remarkably, but the level is still too low to take into account. Engine in-cylinder peak pressure and ignition delay do not alter. Heat release rate falls down in the premixing combustion whereas increases during diffusion combustion. |
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Ultraclean Transportation Fuels
8:25 AM-12:00 PM, Wednesday, April 9, 2008 Morial Convention Center -- Rm. 238, Oral
Division of Fuel Chemistry |