An experimental investigation was conducted on a production 4-cylinder, MPI small S.I. engine, 1.2 dm3 displacement, which was operated at 4000 rpm full load, then brought to idle for a short period and finally switched off. As the coolant flow stops while the metal temperature is quite high, a fraction of coolant vaporizes, pressure and temperature increase and part of the coolant is lost through the radiator pressure relief valve. This phenomenon is often known as after-boiling.Tests were carried out for different values of the idle operation time, while coolant conditions and metal temperature at 26 points of the engine head and liner were monitored for 2 mins before and 15 mins after engine switch-off. The volume of leaked coolant as well as the start and finish of the expulsion process were also recorded.


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    Title :

    Experimental Analysis of the After-Boiling Phenomenon in a Small I.C.E


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    Small Engine Technology Conference & Exposition ; 2004



    Publication date :

    2004-09-27




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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