ESTIMATING REAL WORLD EMISSIONS FROM PASSENGER CARS - USE AND LIMITATIONS OF INSTANTANEOUS EMISSION DATA

In recent years, many measurements of emissions on chassis-dynamometers have already incorporated the online measurement of emission concentrations at the exhaust as standard, alongside the usual average values. These data collected with a high time resolution (eg 1 second) can be combined with the likewise modal-recorded operating condition of the vehicle (engine load) and serve as a basis for methods of calculating emission. Compared to the widely used characterizatoin of a driving pattern by its average speed only, the explicit dependence of the emission behaviour on the engine load allows to take into account the level of dynamics of each driving situation individually. A reliable emission data set gives the possibility of calculating emission for different real world driving conditions. For many applications, it is thereby no longer necessary to carry out costly and time-consuming chassis-dynamometer tests. Generation of emission data sets takes place on chassis-dynamometers using different driving patterns. Systematic investigations should show the requirements necessary for generation of instantaneous emission matrices, and how important a reliable consideration of driving kinematics is in estimating emissions for real world driving accurately. (A)

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  • Corporate Authors:

    Inderscience Enterprises Limited

    World Trade Center Building, 110 Avenue Louis Casai
    Geneva,   Switzerland 
  • Authors:
    • STURM, P J
    • HAUSBERGER, S
    • KELLER, M
    • DE HAAN, P
  • Publication Date: 2000

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00793675
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, ATRI
  • Created Date: Jun 15 2000 12:00AM