Experimental study on effect of ethanol mixing ratio in ethanol-diesel blend fuel on performance for the diesel engine

First by analyzing the physical and chemical properties of different blend proportion on ethanol-diesel fuel, determined the mixing ratio of ethanol being were 0-15% by volume in the blend fuel; and then make the bench test on 4102Q diesel, focused analysis the influence on exhaust emissions and dynamic performance of diesel engine fueled with 5%, 10%, and 15% of ethanol-diesel blend fuel. The engine tests indicated that under the premise of the diesel engine without any changes, the volume fraction of 10% ethanol content is the optima blend proportion. The engine fueled with this proportion of ethanol-diesel fuel can make the exhaust meet National III emission standard, and the rated power drop down no more than 0.2% at the same time.