2-D LDV measurements were performed on two different cylinder designs in a fired two-stroke engine running with wide-open throttle at 9000 rpm. The cylinders examined were one with open transfer channels and one with cup handle transfer channels.Optical access to the cylinder was achieved by removing the silencer and thereby gain optical access through the exhaust port. No addition of seeding was made, since the fuel droplets were not entirely vaporized as they entered the cylinder and thus served as seeding.Results show that the loop-scavenging effect was poor with open transfer channels, but clearly detectable with cup handle channels. The RMS-value, “turbulence”, was low close to the transfer ports in both cylinders, but increased rapidly in the middle of the cylinder. The seeding density was used to obtain information about the fuel concentration in the cylinder during scavenging.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    The Effect of Transfer Port Geometry on Scavenge Flow Velocities at High Engine Speed


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Congress & Exposition ; 1996



    Publication date :

    1996-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    The effect of transfer port geometry on scavenge flow velocities at high engines speed

    Ekenberg,M. / Johansson,B. / Lund Inst.of Technology,US | Automotive engineering | 1996


    Scavenge streams analysis on high speed 2T gasoline engine

    Chiatti,G. / Chiavola,O. / Univ.di Roma TRE,IT | Automotive engineering | 2002


    Scavenge Streams Analysis in High Speed 2T Gasoline Engine

    Chiatti, G. / Chiavola, O. | SAE Technical Papers | 2002


    Crankcase scavenge target engine

    Ryde, J.L. | Engineering Index Backfile | 1946