Experimental Investigation on Cyclic Variability, Engine Performance and Exhaust Emissions in a Diesel Engine using Alcohol-Diesel Fuel Blend


THERMAL SCIENCE, vol.21, no.21, pp.581-589, 2017 (SCI-Expanded)

  • Publication Type: Article / Article
  • Volume: 21 Issue: 21
  • Publication Date: 2017
  • Journal Name: THERMAL SCIENCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.581-589
  • Karadeniz Technical University Affiliated: Yes


This paper investigates the impacts of using n-butanol-diesel fuel and ethanoldiesel fuel blends on engine performance, exhaust emission and cycle-by-cycle variation in a diesel engine. The engine was operated at two different engine speed and full load condition with pure diesel fuel, 5% and 10% (by vol.) ethanol and n-butanol fuel blends. The coefficient of variation of indicated mean effective pressure was used to evaluate the cyclic variability of nbutanol-diesel fuel and ethanol-diesel fuel blends. The results obtained in this study showed that effective efficiency and brake specific fuel consumption generally increased with the use of the n-butanol-diesel fuel or ethanol-diesel fuel blends with respect to that of the neat diesel fuel. The addition of ethanol or n-butanol to diesel fuel caused a decrement in CO and NOx emissions. Also, the results indicated that cycle-by-cycle variation has an increasing trend with the increase of alcohol-diesel blending ratio for all engine speed. An increase in cyclic variability of alcohol-diesel fuel blends at low engine speed is higher than that of high engine speed.