Automotive exhaust emissions at low ambient temperature

Juhani Laurikko

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    4 Citations (Scopus)


    Experiments with gasoline and diesel engines has been carried out in a cold chamber at constant ambient temperature ranging from +20°C to −30°C. The test results showed that in gasoline engines the use of the enrichment devices necessary during cold-start and warm-up period has a major impact on the total emissions of the engines. The carburetted test engines were also found to be quite sensitive to intake air temperature. In case of a diesel engine cold start and ambient temperature has less effect on emissions because of the differences in mixture formation and combustion process. However, CO and HC emissions increased along with the smoke emission, when test temperature was lowered.
    Original languageEnglish
    Title of host publicationSubzero Engineering Conditions Conference Proceedings
    Place of PublicationWarrendale
    PublisherSociety of Automotive Engineers SAE
    ISBN (Print)978-0-8988-3484-0
    Publication statusPublished - 1989
    MoE publication typeA4 Article in a conference publication
    EventSubzero Engineering Conditions Conference 1989 - Rovaniemi, Finland
    Duration: 9 Jan 198911 Jan 1989

    Publication series

    SeriesSAE Technical Paper Series


    ConferenceSubzero Engineering Conditions Conference 1989


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