Data on vehicle operating conditions have been recorded by a specially equipped car, while circulating through Naples on several typical routes, during rush hours. Traffic has been described in terms of parts of movements between two consecutive stops ('kinematic sequences'), characterized by a number of kinematic variables, such as mean velocity, driving and idling time, gear ratio, number of velocity peaks, etc. Cluster analysis was applied first to identify characteristic sequences, and second to detect the characteristic series of sequences. These series were denoted as driving cycles, and were used for characterizing different traffic intensity levels. The cycle groups were described in terms of the variables measured, and the typical representatives of each group were identified and presented. It is described how the cycles can be used for predicting the exhaust emissions and consumption, by simulating the realistic traffic conditions in the laboratory.


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    Title :

    Urban driving cycles for emission testing


    Additional title:

    Die Aufzeichnung von Stadtverkehr-Betriebszyklen zur Untersuchung der Schadstoffemission


    Contributors:
    Della Ragione, L. (author) / Giglio, V. (author) / Luzar, V. (author) / Rapone, M. (author)


    Publication date :

    1994


    Size :

    8 Seiten, 5 Bilder, 2 Tabellen, 7 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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