THUD—a noise due to high rates of pressure rise in the absence of surface ignition—is the subject of the investigations described in this paper. The tests were performed on 12/1 compression ratio engines.The authors found that thud could be obtained both in engines with clean combustion chambers and those with deposits. Thud is most likely to occur in 12/1 compression ratio engines at least — at wide-open throttle, high speed, and high spark advance.


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    Title :

    THUDDING in High Compression Ratio Engines


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    Pre-1964 SAE Technical Papers ; 1906



    Publication date :

    1959-01-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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