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    On the Transient Three-Dimensional Tribodynamics of Internal Combustion Engine Top Compression Ring

    Source: Journal of Engineering for Gas Turbines and Power:;2017:;volume( 139 ):;issue: 006::page 62801
    Author:
    Baker, C.
    ,
    Theodossiades, S.
    ,
    Rahmani, R.
    ,
    Rahnejat, H.
    ,
    Fitzsimons, B.
    DOI: 10.1115/1.4035282
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: There are increasing pressures upon the automotive industry to reduce harmful emissions as well as meeting the key objective of enhanced fuel efficiency, while improving or retaining the engine output power. The losses in an internal combustion (IC) engine can be divided into thermal and parasitic as well as due to gas leakage because of untoward compression ring motions. Frictional losses are particularly of concern at low engine speeds, assuming a greater share of the overall losses. Piston–cylinder system accounts for nearly half of all the frictional losses. Loss of sealing functionality of the ring pack can also contribute significantly to power losses as well as exacerbating harmful emissions. The dynamics of compression ring is inexorably linked to its tribological performance, a link which has not been made in many reported analyses. A fundamental understanding of the interplay between the top compression ring three-dimensional elastodynamic behavior, its sealing function and contribution to the overall frictional losses is long overdue. This paper provides a comprehensive integrated transient elastotribodynamic analysis of the compression ring to cylinder liner and its retaining piston groove lands' conjunctions, an approach not hitherto reported in the literature. The methodology presented aims to aid the piston ring design evaluation processes. Realistic engine running conditions are used which constitute international drive cycle testing conditions.
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      On the Transient Three-Dimensional Tribodynamics of Internal Combustion Engine Top Compression Ring

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    contributor authorBaker, C.
    contributor authorTheodossiades, S.
    contributor authorRahmani, R.
    contributor authorRahnejat, H.
    contributor authorFitzsimons, B.
    date accessioned2017-11-25T07:15:54Z
    date available2017-11-25T07:15:54Z
    date copyright2017/24/1
    date issued2017
    identifier issn0742-4795
    identifier othergtp_139_06_062801.pdf
    identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4233728
    description abstractThere are increasing pressures upon the automotive industry to reduce harmful emissions as well as meeting the key objective of enhanced fuel efficiency, while improving or retaining the engine output power. The losses in an internal combustion (IC) engine can be divided into thermal and parasitic as well as due to gas leakage because of untoward compression ring motions. Frictional losses are particularly of concern at low engine speeds, assuming a greater share of the overall losses. Piston–cylinder system accounts for nearly half of all the frictional losses. Loss of sealing functionality of the ring pack can also contribute significantly to power losses as well as exacerbating harmful emissions. The dynamics of compression ring is inexorably linked to its tribological performance, a link which has not been made in many reported analyses. A fundamental understanding of the interplay between the top compression ring three-dimensional elastodynamic behavior, its sealing function and contribution to the overall frictional losses is long overdue. This paper provides a comprehensive integrated transient elastotribodynamic analysis of the compression ring to cylinder liner and its retaining piston groove lands' conjunctions, an approach not hitherto reported in the literature. The methodology presented aims to aid the piston ring design evaluation processes. Realistic engine running conditions are used which constitute international drive cycle testing conditions.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleOn the Transient Three-Dimensional Tribodynamics of Internal Combustion Engine Top Compression Ring
    typeJournal Paper
    journal volume139
    journal issue6
    journal titleJournal of Engineering for Gas Turbines and Power
    identifier doi10.1115/1.4035282
    journal fristpage62801
    journal lastpage062801-12
    treeJournal of Engineering for Gas Turbines and Power:;2017:;volume( 139 ):;issue: 006
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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