The application of EGR on compression ignition
(CI) engine has a number of effects on the combustion
process and emissions. Firstly, preheating effect in this
process the inlet charge temperature increased when the
hot EGR mixed with air/fuel mixture. Secondly,
dilution effect due to the introduction of EGR leads to a
considerable reduction of the oxygen concentration.
Thirdly, heat capacity effect in this process affects the
total heat capacity of the mixture of EGR, air and fuel
will be capacity owing to the higher heat capacity of
carbon dioxide and water vapor. This will lead to a
reduction of the gas temperature at the end of the
compression stroke. Fourthly, as chemical composition
of the intake mixture changes, the combustion
characteristics of the charge become different from the
non-EGR condition. In this work, experiments have
been carried out in a double cylinder, water cooled, four
stroke, direct injection diesel engine with exhaust gas
recirculation technique (EGR) using diesel blended
with jatropha biodiesel at different ratios as fuels and
the performance characteristics of the engine have been
studied.
The application of EGR on compression ignition (CI) engine has a number of effects on the combustion process and emissions. Firstly, preheating effect in this process the inlet charge temperature increased when the hot EGR mixed with air/fuel mixture. Secondly, dilution effect due to the introduction of EGR leads to a considerable reduction of the oxygen concentration. Thirdly, heat capacity effect in this process affects the total heat capacity of the mixture of EGR, air and fuel will be capacity owing to the higher heat capacity of carbon dioxide and water vapor. This will lead to a reduction of the gas temperature at the end of the compression stroke. Fourthly, as chemical composition of the intake mixture changes, the combustion characteristics of the charge become different from the non-EGR condition. In this work, experiments have been carried out in a double cylinder, water cooled, four stroke, direct injection diesel engine with exhaust gas recirculation technique (EGR) using diesel blended with jatropha biodiesel at different ratios as fuels and the performance characteristics of the engine have been studied.
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