A vehicle-mounted emissions measurement system that continuously measures CO, CO2, HC, NOx, and A/F as concentrations and also measures exhaust gas flow rate, mass emissions and fuel consumption is presented. The limitations of the accuracy and precision of the on-board emissions system are characterized using a vehicle exhaust emissions simulator. The simulator provides accurate simulated exhaust flows in the range of 10-120 SCFM. The simulator has demonstrated in tests of injected versus recovered CVS mass emissions an overall accuracy of approximately 0.5% of the requested values. The simulated exhaust tests include both fixed and transient concentrations, as well as simulations of an EPA-75 test for a typical vehicle..


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    Titel :

    Investigation into the Performance of an On-Board Emissions Measurement System using a Vehicle Exhaust Emissions Simulator


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Oestergaard, Karl (Autor:in) / Porter, Scott (Autor:in) / Nevius, Tim (Autor:in)

    Kongress:

    SAE Brasil 2003 Congress and Exhibit ; 2003



    Erscheinungsdatum :

    18.11.2003




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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