Theoretical and practical aspects of high speed engine development are presented including influence of related parameters upon theoretical cycle efficiency; importance of good volumetric efficiency; concept of “combustion efficiency” and its use in evaluating a system; required movement of the air charge and methods for inducing it. Performance data is given for a small cylinder at speeds to 4200 rpm. The actual rate of injection, obtained from different nozzle types, is compared with that theoretically required. Valve timing is analyzed with reference to volumetric efficiency as well as to practical considerations. Some causes of engine friction and actual friction curves are shown Engine noise - its origin, measurement, and evaluation - is also discussed.


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    Title :

    Developing High Speed Direct Injection Diesel Engines


    Additional title:

    Sae Technical Papers


    Contributors:
    Wittek, H. L. (author) / List, Hans (author) / Pachernegg, S. (author)

    Conference:

    1965 International Automotive Engineering Congress and Exposition ; 1965



    Publication date :

    1965-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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