Author : M. Velliangiri 1
Date of Publication :21st June 2017
Abstract: The research paper focused on analysing in-Cylinder pressure, NOx formation of three different fuel combinations like EPEG 5.5, 6.5 and 7.5. The combustion process in a CI engine is divided into four stages. These are as follows, Ignition Delay, Rapid pressure rise or period of uncontrolled combustion, Controlled or constant pressure rise, burning of the expansion stroke. The variation of in-cylinder pressure with crank angle plotted concerning CA. Experimentally analysis of In-Cylinder pressure and heat release rate for the single-cylinder engine. NOx emissions of the EPEG7.5 fuel engine are 10.23% lower than the base fuel engine and 2.5% lower than the EPEG6.5 fuel engine. NOx emissions of the EPEG7.5 engine are 5.39% lower compared to the EPEG5.5 fuel engine. NOx emission of four ethanol test fuels follows a similar trend for without EGR mode when load increasing from 0.5 to 3.99 kW. In-Cylinder Pressure variation concerning crank angle for CFMs of 0.0256, 0.0327 and 0.0338 g/cycle. It can be observed from the experiments that the in- Cylinder peak pressure are attained near TDC, and the in-cylinder pressure with CA with 20% EGR mode is slightly less than without EGR
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