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An advanced real-time capable mixture controlled combustion model

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  • Katrašnik, Tomaž

Abstract

The paper presents an innovative and advanced MCC (mixture controlled combustion). The MCC model is coupled to the innovative mechanistically based 0D spray model presented in a companion paper [1] that provides inputs on fuel mass distribution. Advanced MCC model is embedded into a 2-zone combustion modeling framework. Advanced MCC predicts ROHR (Rate-Of-Heat-Release) as the combination of the premixed and two diffusion parts, which correspond to rich and lean spray region. It also calculates the amount of fuel available for premixed combustion based on the duration of the ignition delay period. In addition, it reduces the reaction rate based on the oxygen availability using mechanistic basis, based on evaporation rate and based on mechanistically determined fuel amount that has reached the walls. High level of model predictability was confirmed by good agreement between the simulated and the measured ROHR traces over very broad operating range of the engine by using fixed parameters of the advanced MCC model and the spray model. Moreover, the applied modeling framework with embedded innovative spray and advanced MCC model features HiL (Hardware-in-the-Loop) compatible computational times.

Suggested Citation

  • Katrašnik, Tomaž, 2016. "An advanced real-time capable mixture controlled combustion model," Energy, Elsevier, vol. 95(C), pages 393-403.
    • Handle: RePEc:eee:energy:v:95:y:2016:i:c:p:393-403
    DOI: 10.1016/j.energy.2015.11.066
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    References listed on IDEAS

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    1. Maroteaux, Fadila & Saad, Charbel, 2015. "Combined mean value engine model and crank angle resolved in-cylinder modeling with NOx emissions model for real-time Diesel engine simulations at high engine speed," Energy, Elsevier, vol. 88(C), pages 515-527.
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