Particle image velocimetry (PIV) was used to study the velocity field characteristics in motored two-stroke ported engines. Measurements of the two-dimensional velocity field were made at the midplane of the clearance volume for bowl-in-head and disk combustion chamber geometries. Measurements were also obtained for two scavenging port geometries, i.e. a loop-scavenged engine and a loop-scavenged engine with a boost port. Results from this study show that in-cylinder geometry had a dominant effect on the flow structure observed at TDC. For example, with the boost-port scavenging crankcase, the disk-shaped chamber showed a turbulent flow-field at TDC with little large scale motion. In contrast, addition of a squish flow from the bowl-in-head geometry produced an organized cross-chamber flow.


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    Title :

    Velocity Field Characteristics in Motored Two-Stroke Ported Engines. (Reannouncement with New Availability Information)


    Contributors:
    J. B. Ghandi (author) / J. K. Martin (author)

    Publication date :

    1992


    Size :

    14 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English





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