Effect of compression ratio on energy and emission of VCR diesel engine fueled with dual blends of biodiesel

In recent 10 years biodiesel fuel was studied extensively as an alternative fuel. most of researchers reported performance and emission of biodiesel and their blends with constant compression ratio. also all the research was conducted with use of single biodiesel and its blend. few reports are observed with the use of variable compression ratio and blends of more than one biodiesel. main aim of the present study is to analyse the effect of compression ratio on the performance and emission of dual blends of biodiesel. in the present study blends of jatropha and karanja with diesel fuel was tested on single cylinder vcr di diesel engine for compression ratio 16 and 18. high density of biodiesel fuel causes longer delay period for jatropha fuel was observed compare with karanja fuel. however blending of two biodiesel k20j40d results in to low mean gas temperature which is the main reason for low nox emission. © school of engineering,taylor’s university.