Performance Analysis and Emission Characteristics for Butanol Blended Diesel fuel

Abstract

This experimental study is done on a single cylinder DICI engine to evaluate its performance and emission for different ratio of butanol in diesel. At lower loading BTE and BSFC of the butanol-diesel blend were better than pure diesel. Blend with 40% v/v of butanol was 17.54 % more efficient than pure diesel at 16.67% loading, 12%v/v of butanol in diesel was around 3% more efficient than diesel at 50% loading. BSFC for diesel with 12%v/v of butanol was similar to diesel up to 50% loading. The investigation predicts that at lower loadings butanol promotes the premixing quality with increased oxygen contained in charge and at higher loading due to low calorific (CV) of charge performance of the test fuel. NOx emission of the butanol blend fuels is lower than the diesel and reduces with increase in butanol contained in diesel. NOx was least for B20D80 and B40D60 fuel at lower and higher loading, respectively. NOx emissions for B20D80 and B40D60 were 33.60% and 27.78 % lower than Pure diesel at lower and full loading, respectively. HC and CO emission butanol-diesel blend were lower than pure diesel at higher loading and CO emission for the blend were higher than diesel at lower loading, which may be implemented in the design of new engines.