Accuracy of exhaust emission factor measurements on chassis dynamometer

R. Joumard (Corresponding Author), Juhani Laurikko, T.L. Han, S. Geivanidis, Z. Samaras, T. Merétei, P. Devaux, J.-M. André, E. Cornelis, S. Lacour, M.V. Prati, R. Vermeulen, M. Zallinger

    Research output: Contribution to journalArticleScientificpeer-review

    15 Citations (Scopus)


    To improve the accuracy, reliability, and representativeness of emission factors, 10 European laboratories worked together to study the influence of 20 parameters on the measurement of light-vehicle emission factors on chassis dynamometer of 4 main categories: driving patterns, vehicle-related parameters, vehicle sampling, and laboratory-related parameters. The results are based on (1) literature synthesis, (2) approximately 2700 specific tests with 183 vehicles, and (3) the reprocessing of more than 900 tests. These tests concern the regulated atmospheric pollutants and pre-Euro to Euro 4 vehicles. Of the 20 parameters analyzed, 7 seemed to have no effect, 7 were qualitatively influential, and 6 were highly influential (gearshift strategy, vehicle mileage, ambient temperature, humidity, dilution ratio, and driving cycle). The first four of the six were able to have correction factors developed for them. The results allow for the design of recommendations or guidelines for the emission factor measurement method.
    Original languageEnglish
    Pages (from-to)695-703
    Number of pages9
    JournalJournal of the Air and Waste Management Association
    Issue number6
    Publication statusPublished - 2009
    MoE publication typeA1 Journal article-refereed


    • diesel exhaust
    • exhaust emissions
    • exhaust gases
    • petrol exhaust
    • emission measurements
    • measurements


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