Tuning to low emissions: a study of the effect of service and maintenance on emissions from in-use vehicles

Juhani Laurikko, Markku Ikonen

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

    Abstract

    To demonstrate the importance of periodic tune-up, the effect of service and maintenance on exhaust emissions of in-use passenger cars was studied with 19 vehicles of various age between model years 1982-1989. Apart from the 16 non-catalyst cars, the batch comprised 3 catalyst equipped vehicles. Of these, one was retrofitted with an open-loop system, and the two others were closed-loop TWC systems. Among all the cars, the odometer reading ranged from 15000 to 226000 km. The service and tune up was found to reduce CO emissions by some 25%. Even HC output was lowered, but to a lesser extent (about 5%). On the other hand, the emissions of nitrogen oxides (NOx) were somewhat increased (13%). These effects were most accentuated in the case of the non-catalyst and carburetted vehicles, and somewhat less in cars with fuel injection. The catalyst-equipped vehicles were least affected.
    Original languageEnglish
    Title of host publicationXXIV FISITA Congress Technical papers
    Subtitle of host publicationThe vehicle and the environment
    Pages127-134
    Volume2
    Publication statusPublished - 1992
    MoE publication typeA4 Article in a conference publication
    EventXXIV FISITA Congress: Engineering for the customer - London, United Kingdom
    Duration: 7 Jun 199211 Jun 1992

    Conference

    ConferenceXXIV FISITA Congress
    CountryUnited Kingdom
    CityLondon
    Period7/06/9211/06/92

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  • Cite this

    Laurikko, J., & Ikonen, M. (1992). Tuning to low emissions: a study of the effect of service and maintenance on emissions from in-use vehicles. In XXIV FISITA Congress Technical papers: The vehicle and the environment (Vol. 2, pp. 127-134)