TY - JOUR
T1 - Impact of changing combustion chamber geometry on emissions, and combustion characteristics of a single cylinder SI (spark ignition) engine fueled with ethanol/gasoline blends
AU - Hasan, Ahmad O.
AU - Al-Rawashdeh, Hani
AU - Al-Muhtaseb, Ala'a H.
AU - Abu-jrai, Ahmad
AU - Ahmad, Read
AU - Zeaiter, Joseph
N1 - Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2018/11/1
Y1 - 2018/11/1
N2 - The aim of this study was to investigate the range of opportunities and future prospects of presenting a blend of gasoline/ethanol fuel to run a gasoline engine. Biofuel's advantages involve emission of low quantities of contaminants to the atmosphere and its renewable character in order to trim down dependency on gasoline as a fuel. Analyses have been carried out to show the influence of compression ratio on engine performance and tailpipe emissions by using unleaded gasoline and gasoline blends with (10 and 20%) pure ethanol SI (spark ignition) engine having a variable compression ratio with the air-cooled single-cylinder engine. Experiments were conducted on five different compression ratios (CRs) of 4:1, 5.5:1, 7:1 8.5:1, and 10:1 with a wide-open throttle. Two combinations of blended fuels were compared to the unleaded gasoline. The results showed that the BMEP (brake mean effective pressure), BTE (brake thermal efficiency), and BSFC (brake specific fuel consumption) obtained with the use of gasoline blends at all CRs were generally higher in comparison to those of pure gasoline. In general, gasoline blends provided a lower exhaust emission compared to gasoline's emissions at all CRs. Furthermore, NOx emissions were affected much more than other exhaust emissions when changing the compression ratios compared to unleaded gasoline.
AB - The aim of this study was to investigate the range of opportunities and future prospects of presenting a blend of gasoline/ethanol fuel to run a gasoline engine. Biofuel's advantages involve emission of low quantities of contaminants to the atmosphere and its renewable character in order to trim down dependency on gasoline as a fuel. Analyses have been carried out to show the influence of compression ratio on engine performance and tailpipe emissions by using unleaded gasoline and gasoline blends with (10 and 20%) pure ethanol SI (spark ignition) engine having a variable compression ratio with the air-cooled single-cylinder engine. Experiments were conducted on five different compression ratios (CRs) of 4:1, 5.5:1, 7:1 8.5:1, and 10:1 with a wide-open throttle. Two combinations of blended fuels were compared to the unleaded gasoline. The results showed that the BMEP (brake mean effective pressure), BTE (brake thermal efficiency), and BSFC (brake specific fuel consumption) obtained with the use of gasoline blends at all CRs were generally higher in comparison to those of pure gasoline. In general, gasoline blends provided a lower exhaust emission compared to gasoline's emissions at all CRs. Furthermore, NOx emissions were affected much more than other exhaust emissions when changing the compression ratios compared to unleaded gasoline.
KW - Combustion characteristics
KW - Compression ratio
KW - Ethanol/gasoline blends
KW - Exhaust emissions
KW - Spark ignition engine
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U2 - 10.1016/j.fuel.2018.05.045
DO - 10.1016/j.fuel.2018.05.045
M3 - Article
AN - SCOPUS:85047245596
SN - 0016-2361
VL - 231
SP - 197
EP - 203
JO - Fuel
JF - Fuel
ER -
