This report presents the results of a project to identify the emission control components and parameters which adversely affect in-use vehicle emissions. Eighteen vehicles which had previously failed the California Air Resources Board's in-use vehicle surveillance test program due to unidentified or uncertain causes were examined in greater detail by the contractor. Following initial examination, the baseline emissions of all 18 vehicles exceeded one or more emission standard by over 15 percent. The emission control component parts were inspected for functional operation and calibrated. All components found to be out-of-specification were replaced and a final emissions test was performed to determine the effect upon emissions.


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    Title :

    Study of Components Influencing the Deterioration of Vehicle Emission Control Systems


    Publication date :

    1982


    Size :

    240 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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