Experimental investigation of the effects of N-Hexanol additive in different fractions on emission parameters in diesel engines

Abstract

Various modifications can be made to diesel engines to reduce emissions caused by them. However, these modifications may pose technical challenges and may not be cost-effective. Instead, using diesel fuel (DF), biodiesel (B100), and light or heavy alcohol blends in engines can help reduce the emission of pollutants. For this reason/reasons, the effects of DF, B100 synthesized from safflower seed oil, and n-hexanol blends on emissions have been investigated in this study. Emission values obtained, DF, B100, 50%/50% vol% diesel/biodiesel (DF50B50), 50%/50% vol% diesel/n-hexanol (DF50HE50), 50%/25%/25% vol% diesel /biodiesel/n-hexanol (DF50B25HE25), 50%/35%/15% vol diesel/biodiesel/ n-hexanol (DF50B35HE15), and 50%/45%/5% vol diesel/biodiesel/n-hexanol (DF50B45HE5) ) were compared with the emission values of the mixtures. Among these blends, DF50B50, DF50HE50, and DF50B25HE25 fuels reduced smoke opacity (SO) by %80.17, %88.43, and %56.20, respectively, compared to DF at full load. Under the same load conditions, DF50B50, DF50HE50 and DF50B25HE25 fuels reduced NOx emissions by 19.18%, 2.20% and 20.44%, respectively, compared to DF, while CO emissions decreased by 23.08%, increased by 3.85% and decreased by 17.69%, respectively, under the same load conditions.