The influence of swirl on combustion in diesel and spark ignition engines is reviewed briefly, and this leads to a resumé of the swirl measuring techniques. The numerous ways of analysing swirl data are summarised and the relations between the different swirl parameters are presented.Experimental results are presented from a diesel engine in which the flow has been measured by a hot wire anemometer, a paddle wheel and a swirl torquemeter. The performance of the different measurement techniques is compared. Further results are presented (from a spark ignition engine) which illustrate the influence of the inlet port, manifold and entry conditions on the swirl measurements. Integration techniques are reviewed for producing a single swirl parameter to characterise the combined performance of the inlet port, valve and camshaft. Finally, the difficulty in standardising measurements of barrel swirl are discussed.


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    Title :

    The Measurement and Analysis of Swirl in Steady Flow


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Off-Highway & Powerplant Congress & Exposition ; 1992



    Publication date :

    1992-09-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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