At present time, soot deposit role in the process of transient heat transfer in the diesel engine combustion chamber is studied deficiency. In the paper, a new calculation experimental method of investigation and a new mathematical model are suggested. The new method and model allow evaluating the heat insulation effect of soot deposit. The experimental research of local heat transfer was carried out using a new type of sensors for transient heat flux. Calculated local values of soot deposit show close fit (deviation was about 3 - 9%) to the experimental data. It was specified that soot deposit temperature in normal direction from the heat-loaded surface to the limit depth (detail surface) decreases about 7K per micrometer and heat flux density about 0.5%. Phase delay fluctuations of temperature and heat flux density throughout the soot deposit depth was about Δᵩ = 0.50 of crankshaft angle rotation on each micrometer. The necessity of accounting of soot deposit heat insulation is obvious, because the processes of soot generation and its conversion into the soot deposit are the essential parts of heterogeneous combustion in the diesel engines. The same process but with much less intensity, takes place in the engines with the direct injection of gas.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Heat Insulating Effect of Soot Deposit on Local Transient Heat Transfer in Diesel Engine Combustion Chamber


    Additional title:

    Sae Technical Papers



    Conference:

    SAE 2012 World Congress & Exhibition ; 2012



    Publication date :

    2012-04-16




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





    Modelling the transient heat transfer in the ceramic combustion chamber walls of a low heat rejection diesel engine

    Rakopoulos,C.D. / Mavropoulos,G.C. / National Tech.Univ.of Athens,GR | Automotive engineering | 1999


    Deposit Formation and Heat Transfer for Bioethanol-Fueled Rocket Engine Combustion Chamber Liners

    Azuma, Nobuyuki / Hiraiwa, Tetsuo / Ogawa, Daisuke et al. | AIAA | 2019


    Heat transfer on the ceramic combustion chamber wall of diesel engine

    Enomoto,Y. / Furuhama / Takai et al. | Automotive engineering | 1987


    Heat transfer to ceramic wall in combustion chamber of diesel engine

    Shen,S. / Zhang,Z. / Zhu,T. et al. | Automotive engineering | 1987