TY - JOUR T1 - Experimental and Theoretical Study of the Effects of Operating Parameters on Nitric Oxide Emissions from Spark-Ignition Engines AU - , Tayeb Ouksel AU - , Mahfoud Kadja AU - , Pascal Higelin AU - , Abdelaziz Chelghoum JO - Asian Journal of Information Technology VL - 5 IS - 12 SP - 1394 EP - 1409 PY - 2006 DA - 2001/08/19 SN - 1682-3915 DO - ajit.2006.1394.1409 UR - https://makhillpublications.co/view-article.php?doi=ajit.2006.1394.1409 KW - Combustion KW -spark-ignition engines KW -nox KW -multizone model KW -dissociation AB - The article reports the experimental and theoretical results for an engine working with petrol 95 as a fuel. The theoretical part of this work uses a multi-zone model in order to predict engine performance and NO emissions in a spark-ignition engine. The gas exchange process is calculated by one dimensional isentropic flow through a nozzle. During combustion, 11 products are obtained by chemical equilibrium and Nitric Oxide (NO) formation is calculated by the extended Zeldovich mechanism. The results of the computer multi-zone model are compared with the experimental data. The calculated values for pressure and NO emissions show good agreement with the experimental data. The multizone formulation developed here indicates that the use of 10 burned zones are likely to be sufficient for the accurate prediction of NO emission from SI engines. ER -