Effect of combined system (EGR and WI)‎ on diesel engine brake power and NOx emissions

Abstract EN

An experimental investigation was carried out at the laboratories of Sudan University of Science and Technology, to show the effect of Combined System (Exhaust Gas Recirculation (EGR) and Water Injection (WI)) on diesel engine brake power and the emissions of Nitrogen Oxides.

The results of tests show that the Water Injection increases the power output of the engine particularly at mid and high engine speed.

Combined system (EGR + WI) reduce the engine power, when compared to that obtained by turbocharged engine, and it is still greater than the power generated from an engine running with EGR system only.

EGR will reduce the emissions of NOx from diesel engine considerably.

At the presence of (WI) system, NOx emissions decrease as the injected water increases.

A great reduction in NOx emissions will occur at the combined system (EGR + WI).