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Predicting chemical species in spark-ignition engines

Author

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  • Selamet, Emel Evren
  • Selamet, Ahmet
  • Novak, James M.

Abstract

The unsteady motion of chemical species in the intake and exhaust ducts of spark-ignition internal combustion (I.C.) engines is studied numerically by employing a finite-difference-based engine simulation code. The time-dependent mass fractions of six dominant products (CO2, H2O, CO, H2, O2, N2) combined with five additional minor species (H, NO, O, OH, N) are computed in the combustion chamber and tracked throughout the breathing system for wide-open-throttle as well as part-load operating conditions. The property calculations employ the NASA database to determine the composition. The effect of the number of product species on the engine performance and dynamic quantities, including pressure and temperature in the breathing system, is also investigated.

Suggested Citation

  • Selamet, Emel Evren & Selamet, Ahmet & Novak, James M., 2004. "Predicting chemical species in spark-ignition engines," Energy, Elsevier, vol. 29(3), pages 449-465.
    • Handle: RePEc:eee:energy:v:29:y:2004:i:3:p:449-465
    DOI: 10.1016/j.energy.2003.10.006
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    Cited by:

    1. Najjar, Yousef S.H., 2011. "Comparison of performance of a Greener direct-injection stratified-charge (DISC) engine with a spark-ignition engine using a simplified model," Energy, Elsevier, vol. 36(7), pages 4136-4143.

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