The fuel spray impingement on the piston head and/or chamber often occurs in compact IC engines. The impingement plays one of the key roles in combustion because it affects the air-fuel mixing process. In this study, the impinged combustion has been experimentally investigated to understand the mechanism and dynamics of flame-wall interaction. The experiments were performed in a constant volume combustion chamber over a wide range of ambient conditions. The ambient temperature was varied from 800 K to 1000 K and ambient gas oxygen was varied from 15% to 21%. Diesel fuel was injected with an injection pressure of 150 MPa into ambient gas at a density of 22.8 kg/m3. The natural luminosity technique was applied in the experiments to explore the impinged combustion process. High-speed images were taken using a high-speed camera from two different views (bottom and side). An in-house Matlab program was used to post-process the images. The potential region of soot formation was found on the impinging plate based on the strength of local soot luminosity. The effect of air entrainment on the flame propagation was investigated by studying the curvature of the flame outer boundary when flame impingement. Further, the apparent heat release rate (aHRR) was measured during flame impingement and the governing combustion modes (premixed and diffusion) in the impinged combustion were discussed.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Spray-Wall Dynamics of High-Pressure Impinging Combustion


    Additional title:

    Sae Technical Papers


    Contributors:
    Naber, Jeffrey (author) / Zhao, Le (author) / Lee, Seong-Young (author) / Zhu, Xiucheng (author) / Zhao, Zhihao (author)

    Conference:

    International Powertrains, Fuels & Lubricants Meeting ; 2019



    Publication date :

    2019-01-15




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Combustion Characteristics of Wall-Impinging Diesel Fuel Spray under Different Wall Temperatures

    Chen, Beiling / Geng, Chao / Liu, Haifeng et al. | SAE Technical Papers | 2017


    Steady Spray Impinging on.a Flat Wall

    Nishida, Osami / Fujita, Hirotsugu / Harano, Wataru et al. | TIBKAT | 1992


    High Pressure Impinging Spray Film Formation Characteristics

    Naber, Jeffrey / Zhao, Le / Ahuja, Nitisha et al. | SAE Technical Papers | 2018


    A study on combustion behaviour of diesel fuel spray impinging on a wall

    Tomonaga,T. / Murai,K. / Takano,T. et al. | Automotive engineering | 1996


    Spray-wall interaction: diesel fuels impinging on a tempered wall

    Magnusson,A. / Andersson,S. / Jedrzejowski,S. et al. | Automotive engineering | 2006