Original scientific paper
THE EFFECT OF WATER EMULSIFIED IN DIESEL FUEL ON DIESEL EXHAUST EMISSION
Niko Samec
Želimir Dobovišek
Aleš Hribernik
Abstract
Abstract
The 10% and 15% water/fuel (W/F) stabilized emulsions have been used with the purpose to reduce diesel exhaust emissions. The stabilized long-term W/F emulsion may be obtained by adding a small amount of an appropriate emulsifier by applying time controlled mixing procedure. Water mixed with fuel has a strong effect on physics and chemical kinetics of the mixture formation, ignition, premixed and diffusion combustion, significantly reducing the reaction rate of pollutant formation, especially NOx and soot. From in-cylinder pressure time history and rate of heat release history it was possible to indicate and discuss the differences of combustion development when W/F emulsion is burnt. The results of engine testing in a broad field of engine loads and speeds have shown a NOx and soot emissions reduction from 20 to 50% without worsening the specific fuel consumption. The experimental results are presented and discussed here.
Keywords
diesel fuel containing emulsified water; combustion in diesel motor; ignition timing; diesel engine emission improvement; composition standpoint; nitrogen oxydes; carbon particles in exhaust gases
Hrčak ID:
10453
URI
Publication date:
15.1.2001.
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