In marine propulsion systems there may occur operating conditions in which speed is severely reduced while the mean effective pressure remains constant. Tests were carried out on a medium-speed four-stroke engine with a high mean effective pressure and using both constant-pressure and impulse turbocharging in which speed was reduced by up to 35 % at constant mep. The thermal load of the components surrounding the combustion chamber proved to be the major problem not to mention the known difficulty of compressor surging. The outlet valve is in particular danger. The trapped air/fuel ratio gives a primary indication, of the temperature changes to be expected.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    The thermal load of highly supercharged four-stroke engines at reduced speed


    Additional title:

    Die thermische Belastung von hochaufgeladenen Viertakt-Dieselmotoren bei reduzierter Drehzahl


    Contributors:


    Publication date :

    1975


    Size :

    33 Seiten, 11 Bilder


    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English





    First ship with highly supercharged engines

    Engineering Index Backfile | 1954


    First ship with highly supercharged engines

    Engineering Index Backfile | 1954


    Supercharged racing engines

    Borracci, P. | Engineering Index Backfile | 1947


    Supercharged Aero-Engines

    Brooks, C. | Emerald Group Publishing | 1932