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Dimethyl Ether as An Alternative Fuel for Diesel Engines
Published June 24, 1996 by Institution of Mechanical Engineers in United Kingdom
Event: International Seminar on Application of Powertrain and Fuel Technologies to Meet Emissions Standards
Experimental studies have demonstrated that neat dimethyl ether (DME) exhibits very favorable characteristics as an alternative to conventional diesel fuel. These benefits include low NOx emissions, no smoke/low particulate emissions, lower noise and lower exhaust gas reactivity, without a loss in engine thermal efficiency, using essentially conventional diesel combustion technologies.
Detailed analysis of the organic components in the exhaust will be presented and compared with that of normal diesel exhaust. Insignificant amounts of photoreactive components are emitted compared with diesel operation, thus leading to a low potential for ozone formation.
Although DME is not a commodity, it can be manufactured from nearly all carbon-bearing substances at a price not unduly above that of standard diesel. A brief discussion of the production processes from the most attractive feedstock, natural gas, will be outlined.