TY - JOUR ID - 8126 TI - Ion Current Simulation During the Post Flame Period in SI Engines JO - Iranian Journal of Chemistry and Chemical Engineering JA - IJCCE LA - en SN - 1021-9986 AU - Shamekhi, Amir Hossein AU - Ghaffari, Ali AD - Faculty of Mechanical Engineering, K. N. Toosi University of Technology, P.O.Box 16765-3381, Tehran, I. R. IRAN Y1 - 2005 PY - 2005 VL - 24 IS - 2 SP - 51 EP - 58 KW - Combustion species KW - Ion current KW - Modeling KW - Peak pressure position KW - SI engines DO - 10.30492/ijcce.2005.8126 N2 - The application of ion current signals is one of the most recent approaches in engine management systems. By applying a small constant DC voltage across the electrodes of the spark plug and measuring the current through the electrode gap, the state of gas may be measured and investigated. In this paper a computer code is developed in order to analyze the state of gas during the combustion period. It is shown that there is a strong correlation between the peak pressure and the maximum current position. It is also shown that among all combustion products, the NO has the most contribution in generating electrical current. The two zones model is used for calculating the cylinder pressure and temperature.    UR - https://ijcce.ac.ir/article_8126.html L1 - https://ijcce.ac.ir/article_8126_be4b292dc793296faa89c15eed8bed5f.pdf ER -