TY - JOUR
T1 - Compression ratio effects on an ethanol/gasoline fuelled engine performance
AU - Sodré, José R.
AU - Costa, Rodrigo C.
PY - 2011/2/1
Y1 - 2011/2/1
N2 - This work investigates the influence of compression ratio on the performance of a spark ignition engine fuelled by a blend of 78% gasoline-22% ethanol (E22) or hydrous ethanol (E100). A 1.0-L, eight-valve, four-cylinder, production engine was tested in a dynamometer bench varying the speed in the range from 1500 to 6500 rev/min. Three compression ratios were investigated: 10:1, 11:1 and 12:1. The performance parameters evaluated were torque, brake mean effective pressure (BMEP), power, specific fuel consumption (SFC), thermal efficiency, exhaust gas temperature and volumetric efficiency. The results showed that higher compression ratios improved engine performance for both fuels throughout all the speed range investigated, with major effects being observed when hydrous ethanol was used.
AB - This work investigates the influence of compression ratio on the performance of a spark ignition engine fuelled by a blend of 78% gasoline-22% ethanol (E22) or hydrous ethanol (E100). A 1.0-L, eight-valve, four-cylinder, production engine was tested in a dynamometer bench varying the speed in the range from 1500 to 6500 rev/min. Three compression ratios were investigated: 10:1, 11:1 and 12:1. The performance parameters evaluated were torque, brake mean effective pressure (BMEP), power, specific fuel consumption (SFC), thermal efficiency, exhaust gas temperature and volumetric efficiency. The results showed that higher compression ratios improved engine performance for both fuels throughout all the speed range investigated, with major effects being observed when hydrous ethanol was used.
KW - Compression Ratio
KW - Ethanol
KW - Fuel Consumption
KW - Internal Combustion Engine
KW - Thermal Efficiency
UR - http://www.scopus.com/inward/record.url?scp=78049439271&partnerID=8YFLogxK
UR - https://www.sciencedirect.com/science/article/pii/S1359431110003947?via%3Dihub
U2 - 10.1016/j.applthermaleng.2010.09.007
DO - 10.1016/j.applthermaleng.2010.09.007
M3 - Article
AN - SCOPUS:78049439271
SN - 1359-4311
VL - 31
SP - 278
EP - 283
JO - Applied Thermal Engineering
JF - Applied Thermal Engineering
IS - 2-3
ER -