AS an engine under development is not a tool which can be used for the testing and rejection of questionable spark-plugs, some test is necessary to parallel the engine development so that suitable spark-plugs are available for it when it enters service. This paper describes a preliminary single-cylinder engine test method for spark-plugs which evaluates the quality not only most essential but the most difficult to secure, namely, resistance to preignition.Tests were made on two types of engine-a liquid-cooled, single-cylinder test engine and an air-cooled, single-cylinder test engine. Operating conditions were selected with regard for satisfactory performance plus the ability to heat the spark-plug.A large number of plugs were tested, some of identical design, and many of them were re-run several times as a check on the reproducibility of the test method.In addition to the preignition test, a full-scale engine type test, a ground fouling test, a flight fouling test, and a starting-ability test are recommended, with bench tests at intervals and measurement of electrode erosion and wear as a check on the probable useful life and ability of the spark-plug to measure up to the requirements of flight service.


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    Titel :

    Hi-Duty Spark-Plug Testing


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Beall, A. L. (Autor:in) / Townsend, L. M. (Autor:in)

    Kongress:

    Pre-1964 SAE Technical Papers ; 1906



    Erscheinungsdatum :

    01.01.1938




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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