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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 6    
Website: http://www.ijser.org
scirp IJSER >> Volume 3,Issue 6,June 2012
The Performance and Emission Characteristics of SI Engine Running on Different Ethanol-Gasoline Blends
Full Text(PDF, )  PP.169-175  
Author(s)
Achinta Sarkar, Achin Kumar Chowdhuri, Arup Jyoti Bhowal and Bijan Kumar Mandal
KEYWORDS
ethanol, gasoline, blend, SI engine, efficiency, BSFC, emission
ABSTRACT
This paper presents a review of the use of ethanol in SI engine, its performance and emission characteristics based on the works of different researchers and scientist available in the literature. The advantages of using ethanol as SI engine fuel include its greenness, renewability, higher availability and usability in near future, higher octane number, higher volumetric efficiency, higher compression ratio and biodegradability. Ethanol can be produced biologically from sugarcane, crop residues, cellulose, agricultural biomass, municipal waste etc. The experiment conducted by different researchers and their experimental results shows that brake specific fuel consumption, brake torque, indicated power, thermal efficiency increases or decreases depending upon the operating condition of the engine and ethanol percentage in the ethanol-gasoline blends. However, the compression ratio always increases due to enhancement of the octane number of the blend. On the other hand volumetric efficiency increases with the increase in ethanol percentage in the blends. Also there is a significant reduction in the emission of unburned hydrocarbon and carbon monoxide with ethanol and ethanol gasoline blend. But the CO2 emission is more with ethanol and NOx emission increases or decreases depending upon the engine operating conditions. 
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