Experimental study on alcohol fumigation in a CI engine energized with waste cooking oil

Consumption of fossil fuels rose drastically over the global level. Replacement for fossil fuels is necessary, since every year the automobile production is increasing the consumption of fossil fuels like petrol and diesel in rapid phase. Although strict vehicle emission control norms like Euro5, BS6 etc are implemented in different countries, the emission of harmful gas like Hydrocarbons (HC), Carbon monoxide (CO), NOx, VOCs etc have not been reduced to greater extent. So for the replacement of fossil fuels, a suitable alternative fuel which is a combination of waste cooking oil with hexanol added to it by fumigation technique is selected which would reduce the toxic emissions released by automobiles. The aim of this paper is to study the effect of adding hexanol at different concentration by fumigation method on the performance and emission characteristics of a CI engine. NOx emission reduces by 21% and smoke opacity by 28%. BTE is negatively affected by the fumigation mode 2 and reduces to 27.2%. From the emission point of view, the fumigation method proves to be beneficial while running a CI engine with waste cooking oil.