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Investigation on Effect of Water Emulsified with Diesel by Surfactant Addition on Performance and Emission Characteristics of Diesel Engine

P. Sai Chaitanya*, V. Ramubabu and K. Simhadri

Diesel engines are very well known to emit gaseous emission and particulate matter. So it had long been regarded as one of the major air pollution sources, particularly in metropolitan areas, and has been a source of serious public concern for a long time which is very clear with the proposal of ban on registration of diesel SUVs and high-end vehicles with engine capacity of over 2000 cc in major city of India. So definitely there have been numerous researches in the field of reduction of these pollutants since diesel engines came to major use in transportation sector. Using emulsion of diesel in water as a fuel has been a recent field of study to reduce emissions from diesel engine. Water/diesel (W/D) emulsified formulations are reported to reduce the emissions of NOx, SOx, CO and particulate matter (PM) without compensating the engine’s performance. In this paper a new kind of emulsion is prepared by mixed surfactant method, major concern being the long term stability of the same. Then performance and emission tests were carried out by using the fuel in a two cylinder water cooled diesel engine. The results were matched against that of diesel and comparison graphs were plotted to see what are the advantages and disadvantages of using the emulsion over diesel.