Browse Publications Technical Papers 2007-01-1845
2007-07-23

A Study on Effect of Heterogeneity of Oxygen Concentration of Mixture in a Combustion Chamber on Combustion and Emissions of Diesel Engine 2007-01-1845

In this study, the combustion characteristics of diesel flame achieved in a rapid compression and expansion machine (RCEM) at various patterns of oxygen distribution in the chamber are investigated in order to clarify the effect of heterogeneity of oxygen distribution in diesel engines induced by EGR on the soot and NOx emissions. To make the heterogeneous distribution of oxygen in a combustion chamber, the mixtures with different oxygen concentrations are injected through the each different port located on the cylinder wall. Results indicate that the amount of oxygen entrained into the spray upstream the luminous flame region affects the NO emission from diesel flame strongly.

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