The overall objective of the research project was to develop and verify a modal emissions model that accurately reflects Light-Duty Vehicle (LDV, i.e., cars and small trucks) emissions produced as a function of the vehicle.s operating mode. The model is comprehensive in the sense that it is able to predict emissions for a wide variety of LDVs in various states of condition (e.g., properly functioning, deteriorated, malfunctioning). The model is now complete and capable of predicting second-by-second tailpipe emissions and fuel consumption for a wide range of vehicle/technology categories. In creating CMEM, over 350 vehicles were extensively tested on a chassis dynamometer, where second-by-second measurements were made of both engine-out and tailpipe emissions of carbon monoxide, hydrocarbons, oxides of nitrogen, and carbon dioxide. CMEM itself runs on a personal computer or on a UNIX workstation. The model and the emissions database are both available on a CD.


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    Title :

    Development of a Comprehensive Modal Emissions Model


    Contributors:
    M. Barth (author) / F. An (author) / T. Younglove (author) / C. Levine (author) / G. Scora (author)

    Publication date :

    2000


    Size :

    435 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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    An, Feng / Barth, Matthew / Norbeck, Joseph et al. | Transportation Research Record | 1997



    NCHRP Project 25-11: The Development of a Comprehensive Modal Emissions Model

    Barth, M. / Norbeck, J. / Coordinating Research Council | British Library Conference Proceedings | 1997


    Recent Validation Efforts for a Comprehensive Modal Emissions Model

    Barth, Matthew / Malcolm, Carrie / Younglove, Theodore et al. | Transportation Research Record | 2001