By applying large top land gaps bore polishing can be reduced significantly or avoided entirely. Lube oil consumption is also reduced and remains constant over a long period of time. By means of a suitable lay out of the piston and a minimizing of the air volume in the top land gap, the fuel consumption can even be reduced somewhat versus the standard piston version. With a minor correction of the fuel injection timing the same U.S. 13-mode-cycle emission values of HC and NO\dx as with the standard piston can be obtained without any deterioration of the fuel consumption versus the standard version.


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    Title :

    Pistons With Cut-Back Top Land as a Measure Against Bore-Polishing? Influence on Engine Characteristics, Exhaust Emissions and Engine Durability


    Additional title:

    Sae Technical Papers


    Contributors:
    Nefischer, A. (author) / Moser, F. X. (author) / Grabner, H. (author)

    Conference:

    20th FISITA Congress (1984), Vienna, Austria ; 1984



    Publication date :

    1984-01-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    German




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