Experimental and Theoretical Comparative Study of Performance and Emissions for a Fuel Injection SI Engine with Two Octane Blends

Experimental and theoretical investigations are carried out to study and compare the effect of using two gasoline blends, namely octane 91 and octane 95, on the performance and exhaust emissions of a modern fuel injection SI engine at different engine speeds and loads. Theoretical combustion model i...

Full description

Saved in:
Bibliographic Details
Published in:Arabian Journal for Science and Engineering 2015-06, Vol.40 (6), p.1743-1756
Main Authors: Khalifa, A. E., Antar, M. A., Farag, M. S.
Format: Article
Language:English
Subjects:
Blends
Engineering
Engines
Fuel consumption
Fuel injection
Fuels
Humanities and Social Sciences
Mathematical models
multidisciplinary
Octane
Polymer blends
Research Article - Mechanical Engineering
Science
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Experimental and theoretical investigations are carried out to study and compare the effect of using two gasoline blends, namely octane 91 and octane 95, on the performance and exhaust emissions of a modern fuel injection SI engine at different engine speeds and loads. Theoretical combustion model is able to predict the engine performance when compared to the experimental findings. Results show that the engine performances of both fuels are comparable, with marginal differences, under the tested operating conditions, practically for engine speeds less than 3500 rpm. Higher power and less specific fuel consumption are observed when octane 91 fuel is used compared with octane 95 blend. Both blends do not show a tendency of knock occurrence. In general, both fuels show similar trends for CO, CO 2 and NO x concentrations in the exhaust, whereas the unburned hydrocarbons are slightly higher when octane 91 fuel is used. In the higher speed range between 3500 and 5000 rpm, a noticeable decrease in CO 2 concentration, an increase in specific fuel consumption and CO concentration are observed.
ISSN:1319-8025
2191-4281
DOI:10.1007/s13369-015-1649-2