This report adresses the relationship between short test emission results and emissions as measured on the 'complete' or certification test (hydrocarbons and carbon monoxide) for 1981 and later model year light duty vehicles and light duty trucks. As provided in section 207(b) of the Clean air Act, EPA must establish an Emissions Performance Warranty if a short test can be developed which is (1) available (2) in accordance with good engineering practice and (3) reasonably capable of being correlated with the Federal Test Procedure (FTP). The purpose of this report is to evaluate the correlation of idle and loaded short test emissions to results which will be obtained on the certification test for 1981 model year and later passenger cars and light trucks. This report addresses the issue of correlation for 1981 and later model year vehicles, Data from 1975-77 model federal cars was examined. Three short tests are recommended: idle, two speed idle and two mode loaded. These short tests are associated standards give approximately the same error of commission rate as the FTP (comparing single test results to average emission levels) while identifying a substantial part of the excess emissions.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Light Duty Vehicle and Light Duty Truck Emission Performance Warranty; Short Tests and Standards


    Erscheinungsdatum :

    1979


    Format / Umfang :

    27 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    General motors light-duty truck

    Engineering Index Backfile | 1930


    General motors light-duty truck

    Engineering Index Backfile | 1930


    New light-duty truck roundup

    Kraftfahrwesen | 2000


    Economic Value of Haevy Duty Truck Manufacturers Published Warranty to the Truck user

    Manwiller,P.C. / Air Products and Chemicals,US | Kraftfahrwesen | 1986