Effect of Boost Temperature on the Performance and Emissions of a Common Rail Diesel Engine Operating with Rapeseed Methyl Ester (RME)

Consequently, an experimental research program has been conducted on many aspect and parameters to evaluate the performance and emissions characteristic of unmodified common-rail diesel engine operating with biodiesel. Conventional twin turbo V6 diesel engine has been used on this research where the modern technologies equipped to the engine including exhaust gas recirculation (EGR), variable geometry turbine (VGT) and common rail fuel injection systems. In this research report, the effect of boost air temperature has been investigated at low and part load as a key parameter that possibly affect the combustion of RME due to EGR operations, VGT as well as the change of charge air density. The results have been carefully revise and the analysis are includes in-cylinder pressure, rate of heat release, fuel injection parameters as well as emissions level. The overall results have shown that boost air temperature has significantly affected the performance as well as emissions of the engine especially at high load. The in-cylinder peak pressure is increase as boost air temperature increase resulted to increase NOx emissions.