Performance and exhaust emission of a SI engine fuelled with potato waste ethanol and its blends with gasoline

Najafi, G. and Yusaf, T. F. and Ghobadian, B. and Najmeddin, V. R. and Yousif, B. F. (2009) Performance and exhaust emission of a SI engine fuelled with potato waste ethanol and its blends with gasoline. International Energy Journal, 10 (4). pp. 215-226. ISSN 1513-718X


The main aim of this study is to investigate the performance and the pollutant emissions of a four stroke SI engine operating on different ethanol-gasoline blends (0-20%). Fuel properties of ethanol–gasoline blended were examined by the standard ASTM methods. The results showed that increasing the ethanol content in the blend fuel will decrease the heating value of the blended fuel and increase the octane number. Exhaust gas emissions were evaluated and analyzed for Unburned Hydrocarbons (UHC), Carbon Dioxide (CO2), Carbon Monoxide (CO), Oxygen (O2) and Oxide of Nitrogen NOx at different engine speeds and loads (1000-5000 rpm). The results revealed that using ethanol-gasoline blended fuels will marginally increase the brake power and the torque output, the brake thermal efficiency, the relative air–fuel ratio and the volumetric efficiency. Moreover, using ethanol-gasoline blends will decrease the brake specific fuel consumption, CO and HC emissions concentration. This improvement was due to the high oxygen percentage in the ethanol. However the CO2, NOx concentration and the exhaust gas temperature was noticed to be increased.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Author verison unavailable.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering
Date Deposited: 21 Dec 2009 06:16
Last Modified: 28 Nov 2013 00:13
Uncontrolled Keywords: ethanol; engine performance; gasoline; ethanol-gasoline blends; exhaust emissions; SI engine; petrol
Fields of Research : 09 Engineering > 0913 Mechanical Engineering > 091305 Energy Generation, Conversion and Storage Engineering
09 Engineering > 0904 Chemical Engineering > 090405 Non-automotive Combustion and Fuel Engineering (incl. Alternative/Renewable Fuels)
09 Engineering > 0913 Mechanical Engineering > 091302 Automation and Control Engineering
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering

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