Open AccessExperimental investigation on cyclic variability, engine performance and exhaust emissions in a diesel engine using alcohol-diesel fuel blends
Author(s) -
Samet Gürgen,
Bedir Ünver,
İsmail Altın
Publication year - 2017
Publication title -
thermal science/thermal science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.339
H-Index - 43
eISSN - 2334-7163
pISSN - 0354-9836
DOI - 10.2298/tsci161020306g
Subject(s) - diesel fuel , diesel engine , alcohol fuel , environmental science , brake specific fuel consumption , winter diesel fuel , diesel cycle , diesel exhaust , automotive engineering , mean effective pressure , diesel particulate filter , n butanol , waste management , butanol , materials science , petrol engine , ethanol , internal combustion engine , compression ratio , engineering , chemistry , organic chemistry
This paper investigates the impacts of using n-butanol-diesel fuel and ethanol-diesel 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 n-butanol-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