This study focused on a lean-burn regime using a pre-chamber for improving the efficiency of internal combustion engines. Combustion images were visualized using a two-stroke, single-cylinder, optically accessible engine fitted with a cylindrical pre-chamber. The L/D ratio of the pre-chamber length (L) to its diameter (D) and the diameter of the pre-chamber orifice were varied as parameters. Combustion characteristics were analyzed based on the visualized jet flow configuration and combustion chamber pressure measurements. The results revealed that the combustion duration tended to be longer with a smaller L/D ratio and that the coefficient of variation (COV) of the indicated mean effective pressure (IMEP) was smaller and more stable. With a smaller orifice diameter, the jet velocity was faster, and the flame development duration was shorter, but the combustion duration was longer; IMEP tended to be lower, but the COV of IMEP was smaller.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Investigation of the Effect of Pre-Chamber Specifications on Pre-Chamber Jet Combustion Characteristics Using an Optically Accessible Engine


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    Small Powertrains and Energy Systems Technology Conference ; 2023



    Publication date :

    2023-10-24




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Study of Pre-chamber Jet Combustion Behavior using a Small Two-stroke Optically Accessible Engine

    IIJIMA, Akira / ETO, Kuniyoshi / KUROIWA, Minoru et al. | SAE Technical Papers | 2022


    Study of Pre-chamber Jet Combustion Behavior using a Small Two-stroke Optically Accessible Engine

    DEUSHI, Takato / NAKA, Takuma / TSUJIGUCHI, Tatsuya et al. | British Library Conference Proceedings | 2022


    Numerical Simulations of Pre-Chamber Combustion in an Optically Accessible RCEM

    Shapiro, Evgeniy / Boulouchos, Konstantinos / Kotzagianni, Maria et al. | SAE Technical Papers | 2019


    Numerical Simulations of Pre-Chamber Combustion in an Optically Accessible RCEM

    Bolla, Michele / Shapiro, Evgeniy / Tiney, Nick et al. | British Library Conference Proceedings | 2019