Mean Value Modelling of a Turbocharged SI Engine

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    Abstract

    An important paradigm for the modelling of naturallly aspirated (NA) spark ignition (SI) engines for control purposes is the Mean Value Engine Model (MVEM). Such models have a time resolution which is just sufficient to capture the main details of the dynamic performance of NA SI engines but not the cycle-by-cycle behavior. In principle such models are also physically based,are very compact in a mathematical sense but nevertheless can have reasonable prediction accuracy. Presently no MVEMs have been constructed for intercooled turbocharged SI engines because their complexity confounds the simple physical understanding and description of such engines. This paper presents a newly constructed MVEM for a turbocharged SI engine which contains the details of the compressor and turbine characteristics in a compact way. The model has been tested against the responses of an experimental engine and has reasonable accuracy for realistic operating scenarios.
    Original languageEnglish
    Title of host publicationSAE Technical Papers
    Place of PublicationWarrendale PA
    PublisherSAE
    Publication date1998
    Publication statusPublished - 1998
    EventSAE Annual International Congress & Exposition 1998 - Detroit, United States
    Duration: 1 Feb 19981 Feb 1998

    Conference

    ConferenceSAE Annual International Congress & Exposition 1998
    Country/TerritoryUnited States
    CityDetroit
    Period01/02/199801/02/1998

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