THE PREDICTION OF NOX EMISSIONS FROM DIESEL ENGINES BASED ON TWOZONE THERMODYNAMIC MODEL

In this study a two-zone thermodynamic model is used for the prediction of NOx emissions from marine diesel engines, the calculation of two-zone model will be based on one-zone thermodynamic model and on the use of Zeldovich mechanism. The calculated NOx emissions validated by comparing them with measured values at different engine operating regimes. The effect of cylinder wall temperature, air temperature coefficient, and residual gases coefficient on the model sensitivity will be illustrated and explained as well.