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  • Consideration of the Relati...
    Shiina, Ryosuke; Shintani, Yusuke; Ando, Hirokazu; Kimura, Noritaka

    Transactions of Society of Automotive Engineers of Japan, 2024, Letnik: 55, Številka: 2
    Journal Article

    The complex phenomena of pre-chamber jet combustion and their mechanisms were discussed using the CFD Converge. The second half of the combustion period (MFB50-90) was more dominant for knocking than MFB10-50 due to the higher in-cylinder temperature. Pre-chamber jet combustion shortened MFB50-90 by forming a complex flame front due to jet penetration rather than strong turbulence caused by jet streams. The larger the pre-chamber volume, the faster the combustion in the pre-chamber, and the higher the pressure ratio between the main and prechamber. Even if the jet intensity was increased, there was a limit to the complexity of the flame front.