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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 3    
Website: http://www.ijser.org
scirp IJSER >> Volume 3,Issue 3,March 2012
Effect of Injection Pressure on CI Engine Performance Fuelled with Biodiesel and its blends
Full Text(PDF, )  PP.352-355  
Author(s)
Sanjay Patil, Dr. M.M.Akarte
KEYWORDS
Bio-diesel, Palm Oil Methyl Ester, Compression Ignition Engine, Emissions
ABSTRACT
Use of biodiesel as an alternative to diesel could reduce the dependency on petroleum products and the pollution problem. The physical properties of the fuel such as viscosity, volatility and flash point also affect the combustion process, thereby engine performance. Specifically atomization of the fuel during the injection is attributed to higher viscosity of biodiesel. Injected fuel droplets get smaller as the injection pressure increases which contributes to better atomization of the fuel. Hence the effect of injection pressure (IP) on the performance of compression ignition (CI) engine fuelled with biodiesel and its blends with diesel is evaluated. Tests are conducted on CI engine fuelled with diesel at IP of 200 bar to get base line data for comparing engine performance with various blends of palm oil methyl ester (POME) and diesel as test fuels at different injection pressures. The results indicate that the performance of engine is improved with B60 (60% POME and 40% diesel) at IP of 220 bar compared to other test fuels at different injection pressures. In this paper comparison of test fuel B60 at different injection pressures with diesel at 200 bar is made.It is observed that brake thermal efficiency is improved and brake specific energy consumption is lowered with B60 at 220 bar due to improved atomization. It is also observed that carbon monoxide, unburned hydrocarbons are reduced and Nox emissions increased compared to other test fuels at different injection pressures
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