Experimental studies on the performance combustion and emission characteristics of biofuels in a DI diesel engine

Abstract

The limited resources and non renewable nature of petroleum fuels have now become a matter of great concern Hence there is an urgent need to identify some alternative liquid fuels which are non fossil and renewable innature and are capable of substituting partly or wholly the highly demanded diesel fuel The objective of the present work is to use alternative renewable fuels which are performing better than standard diesel in terms of performance and emission characteristics Alternative renewable fuels namely poon oil paradise oil and eucalyptus oil are used as diesel fuel substitutes in the present work Poon oil and paradise oil are tested for their fatty acid composition by means of gas chromatography test and found that they contain linoleic fatty acid and oleic fatty acid as their major fatty acids respectively The presence of linoleic fatty acid in vegetable oil will influence in the decrease of cetane number whereas oleic fatty acid will influence in the increase of cetane number An attempt is made to study the effect of these oils on engine performance and emission characteristics in a single cylinder direct injection diesel engine by adopting different methods newline