Compression ratio effects on an ethanol/gasoline fuelled engine performance

被引：123

作者：

Costa, Rodrigo C. ^{[1
]}

Sodre, Jose R. ^{[1
]}

机构：

[1] Pontificia Univ Catolica Minas Gerais, Dept Mech Engn, BR-30535610 Belo Horizonte, MG, Brazil

来源：

APPLIED THERMAL ENGINEERING | 2011年 / 31卷 / 2-3期

关键词：

Ethanol; Compression Ratio; Internal Combustion Engine; Fuel Consumption; Thermal Efficiency; GASOLINE BLENDS; EMISSIONS;

D O I：

10.1016/j.applthermaleng.2010.09.007

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

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. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：278 / 283

页数：6

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