Emulsified Diesel Fuel
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Emulsified diesel is a blended mixture of diesel fuel, water, and other additives that reduces emissions of PM as well as NOx. Emulsified diesel can be used in any diesel engine, but the addition of water reduces the energy content of the fuel, so some reduction in power and fuel economy can be expected. Emulsified fuel will stay mixed for a fairly long time. However, if a vehicle sits dormant for months at a time the water can settle out of the fuel. Case studies suggest that emulsified diesel can reduce emissions of NOx by about 10-20 percent and PM by about 50-60 percent. For more information see the websites below.
Resources and Publications
- Background on Emulsified Diesel Fuel (EPA)
- Emulsified Fuels in Western Europe presentation by The Adept Group, Inc.
- Experimental Study on the Combustion Characteristics of Emulsified Diesel in a Rapid Compression and Expansion Machine (RCEM)