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Numerical Evaluation of the Effect of Fuel Blending with CO 2 and H 2 on the Very Early Corona-Discharge Behavior in Spark Ignited Engines

Author

Listed:
  • Valerio Mariani

    (Department of Industrial Engineering DIN, Alma Mater Studiorum, University of Bologna, Viale del Risorgimento 2, 40136 Bologna, Italy)

  • Giorgio La Civita

    (Department of Industrial Engineering DIN, Alma Mater Studiorum, University of Bologna, Viale del Risorgimento 2, 40136 Bologna, Italy)

  • Leonardo Pulga

    (NAIS S.r.l., Via Maria Callas 4, 40131 Bologna, Italy)

  • Edoardo Ugolini

    (Department of Industrial Engineering DIN, Alma Mater Studiorum, University of Bologna, Viale del Risorgimento 2, 40136 Bologna, Italy)

  • Emanuele Ghedini

    (Department of Industrial Engineering DIN, Alma Mater Studiorum, University of Bologna, Viale del Risorgimento 2, 40136 Bologna, Italy)

  • Stefania Falfari

    (Department of Industrial Engineering DIN, Alma Mater Studiorum, University of Bologna, Viale del Risorgimento 2, 40136 Bologna, Italy)

  • Giulio Cazzoli

    (Department of Industrial Engineering DIN, Alma Mater Studiorum, University of Bologna, Viale del Risorgimento 2, 40136 Bologna, Italy)

  • Gian Marco Bianchi

    (Department of Industrial Engineering DIN, Alma Mater Studiorum, University of Bologna, Viale del Risorgimento 2, 40136 Bologna, Italy)

  • Claudio Forte

    (NAIS S.r.l., Via Maria Callas 4, 40131 Bologna, Italy)

Abstract

Reducing green-house gases emission from light-duty vehicles is compulsory in order to slow down the climate change. The application of High Frequency Ignition systems based on the Corona discharge effect has shown the potential to extend the dilution limit of engine operating conditions promoting lower temperatures and faster combustion events, thus, higher thermal and indicating efficiency. Furthermore, predicting the behavior of Corona ignition devices against new sustainable fuel blends, including renewable hydrogen and biogas, is crucial in order to deal with the short-intermediate term fleet electric transition. The numerical evaluation of Corona-induced discharge radius and radical species under those conditions can be helpful in order to capture local effects that could be reached only with complex and expensive optical investigations. Using an extended version of the Corona one-dimensional code previously published by the present authors, the simulation of pure methane and different methane–hydrogen blends, and biogas–hydrogen blends mixed with air was performed. Each mixture was simulated both for 10% recirculated exhaust gas dilution and for its corresponding dilute upper limit, which was estimated by means of chemical kinetics simulations integrated with a custom misfire detection criterion.

Suggested Citation

  • Valerio Mariani & Giorgio La Civita & Leonardo Pulga & Edoardo Ugolini & Emanuele Ghedini & Stefania Falfari & Giulio Cazzoli & Gian Marco Bianchi & Claudio Forte, 2022. "Numerical Evaluation of the Effect of Fuel Blending with CO 2 and H 2 on the Very Early Corona-Discharge Behavior in Spark Ignited Engines," Energies, MDPI, vol. 15(4), pages 1-19, February.
  • Handle: RePEc:gam:jeners:v:15:y:2022:i:4:p:1426-:d:750303
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    References listed on IDEAS

    as
    1. Bermúdez, Vicente & Luján, José Manuel & Climent, Héctor & Campos, Daniel, 2015. "Assessment of pollutants emission and aftertreatment efficiency in a GTDi engine including cooled LP-EGR system under different steady-state operating conditions," Applied Energy, Elsevier, vol. 158(C), pages 459-473.
    2. Giorgio La Civita & Francesco Orlandi & Valerio Mariani & Giulio Cazzoli & Emanuele Ghedini, 2021. "Numerical Characterization of Corona Spark Plugs and Its Effects on Radicals Production," Energies, MDPI, vol. 14(2), pages 1-22, January.
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