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Performance and Emission Characteristics of a Diesel Engine Fueled with Alcohol–Diesel Fuel Blends Containing Low Ratio of Alcohols
Author(s) -
Wu Fengying,
Xu Bin,
Liu Yibin,
Wu Jian
Publication year - 2018
Publication title -
environmental progress and sustainable energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.495
H-Index - 66
eISSN - 1944-7450
pISSN - 1944-7442
DOI - 10.1002/ep.13035
Subject(s) - diesel fuel , brake specific fuel consumption , diesel engine , alcohol fuel , mean effective pressure , combustion , materials science , waste management , environmental science , pulp and paper industry , chemistry , automotive engineering , organic chemistry , compression ratio , engineering
The study is to investigate the effects of diesel–alcohol blends containing low ratio of alcohols on the performance and emissions of a diesel engine. Methanol, ethanol, iso‐propanol, and n‐butanol containing 5% by volume were blended with diesel fuel. Then, these blends and neat diesel fuel were tested in an electronic control high‐pressure common rail turbocharged direct injection (DI) diesel engine working at the speed of 2000 revolutions per minute (rpm) and 2800 rpm at five different loads without any modification in the original engine structure. The results of the blends tests were compared with the results of neat diesel fuel under the same condition. The results revealed that, with the increase of the carbon atom number of alcohol, peak combustion pressure of main injection, cumulative heat release, maximum combustion temperature and brake specific fuel consumption (BSFC) increased for the blends. The combustion duration for the blends became shorter than that of pure diesel. Diesel–alcohol blends containing low ratios of various alcohols can effectively reduce at least 29% of smoke emissions and under one condition the percentage can reach 81%. Additionally, the blends have a slight influence on the oxides of nitrogen (NO x ) emissions. The emissions of carbon monoxide (CO) and unburnt hydrocarbon (THC) increased very slightly at low load, but they decreased distinctively at medium and high load. © 2018 American Institute of Chemical Engineers Environ Prog, 38:e13035, 2019