Effect of injection parameters on the reduction of NOx emission in neat bio-diesel fuelled diesel engine.

This work investigates the effect of urea injection parameters on the reduction of NOxemissions from a 4-stroke twin-cylinder diesel engine fueled with neat biodiesel. The test plan was designed by employing L9(34) Taguchi orthogonal array. It has been experimentally found that the concentration of urea, the flow rate of urea and increase in spray angle has a significant effect on reducing in NOxemissions of the diesel engine when fuelled with neat biodiesel. Further, ANOVA results reveal that the concentration and flow rate of urea are the major parameters in reducing NOxemissions whereas, mixing length and spray angle have minimal effect on reduction in NOxemissions. Since the predicted value derived from Taguchi technique is in accordance with the test results from the confirmation test, the predictive capability of this technique in the study shall be inferred. [ABSTRACT FROM PUBLISHER]