Smoke Density
From the Fig. 5. And Fig. 6. The smoke density in HSU was found to be reduced for 40% methanol for 0.5% EGDE with diesel. Fig. 7. Shows the smoke density was found to be reduced appreciably for air preheating as well as air preheating assisted with 40% methanol fumigation plus 0.5% EGDE with sole fuel when compared with normal diesel engine.