Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7498537 | Transportation Research Part D: Transport and Environment | 2018 | 16 Pages |
Abstract
COPERT emissions are very sensitive to mean speed definition. Using a degraded speed definition leads to an underestimation ranging from â13% to â25% for fuel consumption during congested periods (from â17% to â36% respectively for NOx emissions). Including speed distribution with COPERT leads to higher emissions, especially under congested conditions (+13% for FC and +16% for NOx). Finally, both these implementations are compared to the instantaneous modeling chain results. Performance indicators are introduced to quantify the sensitivity of the coupling to traffic dynamics. Using speed distributions, performance indicators are more or less doubled compared to traditional implementation, but remain lower than when relying on trajectories paired with the PHEM emission model.
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Authors
Delphine Lejri, Arnaud Can, Nicole Schiper, Ludovic Leclercq,