Exhaust emissions from motor vehicles in low ambient temperature conditions

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    3 Citations (Scopus)

    Abstract

    This paper presents cold–start emissions results for cars representing typical present–day emission control technology for the former European ERA countries (i.e. Sweden, Finland, Norway, Austria and Switzerland). For most of the cars, this means a three–way catalytic converter with closed–loop air–fuel ratio control and multi–point fuel injection system. The ambient temperature during the test was 0°C, and the first phase (505 seconds) of the FTP75 driving cycle was used to assess the performance. Our test results indicate, that, even if any TWC vehicle with state–of–the–art technology has quite low emissions levels, when its performance is evaluated using the standardized certification and type approval procedures, it produces substantially higher emissions levels, especially carbon monoxide and unburned hydrocarbons when the ambient temperature falls below the temperature range determined in the emission regulations. The technology available to lower the adverse effects of cold–starts to emissions is also discussed.

    Original languageEnglish
    Pages (from-to)280 - 292
    Number of pages13
    JournalInternational Journal of Vehicle Design
    Volume18
    Issue number3 - 4
    DOIs
    Publication statusPublished - 1997
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Railroad cars
    Catalytic converters
    Emission control
    Fuel injection
    Carbon monoxide
    Temperature
    Hydrocarbons

    Cite this

    @article{a5227aa38a234e9dadb39985a25d0335,
    title = "Exhaust emissions from motor vehicles in low ambient temperature conditions",
    abstract = "This paper presents cold–start emissions results for cars representing typical present–day emission control technology for the former European ERA countries (i.e. Sweden, Finland, Norway, Austria and Switzerland). For most of the cars, this means a three–way catalytic converter with closed–loop air–fuel ratio control and multi–point fuel injection system. The ambient temperature during the test was 0°C, and the first phase (505 seconds) of the FTP75 driving cycle was used to assess the performance. Our test results indicate, that, even if any TWC vehicle with state–of–the–art technology has quite low emissions levels, when its performance is evaluated using the standardized certification and type approval procedures, it produces substantially higher emissions levels, especially carbon monoxide and unburned hydrocarbons when the ambient temperature falls below the temperature range determined in the emission regulations. The technology available to lower the adverse effects of cold–starts to emissions is also discussed.",
    author = "Juhani Laurikko",
    year = "1997",
    doi = "10.1504/IJVD.1997.062054",
    language = "English",
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    pages = "280 -- 292",
    journal = "International Journal of Vehicle Design",
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    }

    Exhaust emissions from motor vehicles in low ambient temperature conditions. / Laurikko, Juhani.

    In: International Journal of Vehicle Design, Vol. 18, No. 3 - 4, 1997, p. 280 - 292.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Exhaust emissions from motor vehicles in low ambient temperature conditions

    AU - Laurikko, Juhani

    PY - 1997

    Y1 - 1997

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    AB - This paper presents cold–start emissions results for cars representing typical present–day emission control technology for the former European ERA countries (i.e. Sweden, Finland, Norway, Austria and Switzerland). For most of the cars, this means a three–way catalytic converter with closed–loop air–fuel ratio control and multi–point fuel injection system. The ambient temperature during the test was 0°C, and the first phase (505 seconds) of the FTP75 driving cycle was used to assess the performance. Our test results indicate, that, even if any TWC vehicle with state–of–the–art technology has quite low emissions levels, when its performance is evaluated using the standardized certification and type approval procedures, it produces substantially higher emissions levels, especially carbon monoxide and unburned hydrocarbons when the ambient temperature falls below the temperature range determined in the emission regulations. The technology available to lower the adverse effects of cold–starts to emissions is also discussed.

    U2 - 10.1504/IJVD.1997.062054

    DO - 10.1504/IJVD.1997.062054

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