Abstract
The present work has carried out to enhance the engine performance with use of supercharger and exhaust gas recirculation (EGR). Experiments were conducted on a single cylinder DI diesel engine. Effects of EGR and supercharger on combustion and emissions of a diesel engine were investigated. Tests were performed on diesel engine under different load conditions. Results show that cooled EGR is an effective to reduce NOX, because it lowers the flame temperature and oxygen concentration in the combustion chamber. Increase the inlet mass flow rate of air with aid of supercharger increases the NOX formation and reduces the CO emission considerably. Increase of inlet air temperature with use of EGR has contrary effects on combustion and emission. Diesel engine with EGR at constant pressure is a way to drastically reduce the NOX. Meanwhile increase in CO and hydrocarbon emissions.
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