When exhaust emissions from a vehicle are measured, a flow rate is needed in addition to pollutant concentrations in order to calculate the mass emitted. The highly unsteady flow from an internal combustion engine presents measurement challenges to exhaust flowmeters, especially at idle. Mass measurement methods used in the past have gotten around this problem by a variable dilution scheme (CVS) that measures a different, more favorable flow, but reduces and can contaminate exhaust gas concentration levels. The flow measurement system described here makes possible a more accurate measure of the vehicle exhaust flow by means of a number of design features. This improves considerably the cost effectiveness and accuracy of emissions measurement techniques such as the Bag-Minidiluter sampling system and raw modal analysis.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    DVE - Direct Vehicle Exhaust Flow Measurement using Head-type Flowmeters


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE 2003 World Congress & Exhibition ; 2003



    Publication date :

    2003-03-03




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    DVE - Direct vehicle exhaust flow measurements using head-type flowmeters

    Silvis,W. / Williamson,J. / Kreft,N. et al. | Automotive engineering | 2003


    2003-01-0782 DVE - Direct Vehicle Exhaust Flow Measurement using Head-type Flowmeters

    Silvis, W. / Williamson, J. / Kreft, N. et al. | British Library Conference Proceedings | 2003


    Improving direct vehicle exhaust flow measurement

    Yassine,M.K. / Kirchhoff,C.C. / Laymac,T.D. et al. | Automotive engineering | 2005


    Improving Direct Vehicle Exhaust Flow Measurement

    Kirchoff, C. C. / Coffell, J. H. / Yassine, M. K. et al. | SAE Technical Papers | 2005


    Parameters Affecting Direct Vehicle Exhaust Flow Measurement

    Yassine, M. K. / Marji, M. S. / Berndt, R. W. et al. | SAE Technical Papers | 2003