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Injection Pressure effect in C I Engine Performance with Karanja Oil Methyl Ester (KOME)-Diesel blends as a Fuel

Author Affiliations

  • 1Mechanical Engineering Department, Kakatiya Institute of Technology & Science, Warangal - 506015, Telangana, India
  • 2Mechanical Engineering Department, Kakatiya Institute of Technology & Science, Warangal - 506015, Telangana, India

Int. Res. J. Environment Sci., Volume 5, Issue (12), Pages 14-18, December,22 (2016)


To reduce the dependency on petroleum fuels and the environment pollution, biodiesel can be used as an alternative to diesel fuel. The biodiesel properties such as flash point, volatility and viscosity which affect the combustion process, there by the performance of engine. Biodiesel which is available at higher viscosity than diesel fuel can be injected into the engine cylinder at higher pressures for better atomization that leads complete combustion. Hence experiments were conducted on compression ignition (C I) engine for different injection pressures (IP) to find performance with diesel and diesel-biodiesel (Karanja oil methyl ester/KOME) blend as fuel (50% diesel and 50% biodiesel). The performance of blend fuel D50BD50 at different injection pressures are compared with diesel fuel at 200bar. The results indicate that the performance of engine is improved with D50BD50 at IP of 220bar compared to other injection pressures. It is observed that brake thermal efficiency is improved by 41.02% due to improved atomization and BSFC is lowered by 2.1%due to lower calorific value. In case of emissions hydrocarbons, carbon monoxide and smoke opacity are reduced by 45.4%, 33% and 33% respectively, where as NOx emissions increased when compared with diesel fuel at IP of 200bar.


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