Uppdatering EVA-kalkylen: nya emissionsfaktorer beräknade med PHEM


The current European emission model, HBEFA, specifies emission factors for different driving patterns and vehicle types. This model does not study the example of individual intersections. This study utilizes the same microscopic model, PHEM (www.tugraz.at), as HBEFA to calculate also intersection emissions and emissions of links without intersections. With PHEM the release of four vehicle types (cars fueled by diesel or petrol and trucks with and without trailers) calculated for several different road classes according to the division still used in the models EVA and CAPCAL. To illustrate the emissions of intersections calculations for emissions for a quick stop to rest and then the withdrawal of the original speed is also presented.

In addition to a description of the method of how the new emissions have been calculated in the new tables also include suggestions of future updating of the model. In addition, reported the conclusion of tests and comparisons to facilitate the transition from the current basic model VETO to PHEM. The calculations show that previous assumptions about the significantly lower emissions of vehicles have not been met, and that the vehicle speed impact on emissions has changed., We suggest that more vehicle types will be included in the model at the next update.

The model simulates the CO2, SO2, fuel consumption, HC / VOC, CO, NOx, NO2 and exhaust particles, but the report only presents fuel consumption. However, all other parameters can be obtained directly from the authors. The report first provides a brief description of the different emission models, how the calculations are done up to now and then how adaptations and updates led to the resulting emission factors.



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