F2008-09-066
Simulation and Experimental Investigations on Performance and Emission Characteristics of Diesel Fuel Blended with Di-Butyl Maleate, 2-Butoxy Ethanol and 2-Ethoxy Ethyl Acetate
The demand for compression ignition engines is continuously growing due to their good fuel efficiency. But they cause lot of concern in regard to exhaust emissions. This concern has resulted in further examination of ways by which the composition of the fuel used by CI engines could be changed to reduce emissions. The addition of oxygen containing compounds to diesel fuel has been proposed as a method to complete the oxidation of carbonaceous particulate matter and associated hydrocarbons. In addition many oxygenate have high cetane number and their association with diesel results in high cetane number and hence lower exhaust emissions. Due to this advantages, there is growing interest in the introduction of oxygenates into diesel fuel. The performance and emission characteristics of three kinds of oxygenates 2-Butoxy Ethanol, 2-Ethoxy Ethyl Acetate, Di-butyl Maleate with three different blends were investigated. A considerable reduction of Smoke emission, Carbon monoxide and Unburned Hydrocarbon is obtained and Nitrogen Oxides emissions are increased when the oxygen content is increased from 5% to 15%. In addition, a slight increase of brake specific fuel consumption is observed due to the small decrease of fuel heating value with the increase of the oxygen content. Brake thermal efficiency is also increased when the oxygen content is increased. Simulation programming can be developed to evaluate the performance characteristics of the above fuels. This program can predict the brake thermal efficiency, heat release and the pressure developed inside the combustion chamber for various fuel blends.
Poster presentation: Resources and ecology