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| Titel |
Determination of car on-road black carbon and particle number emission factors and comparison between mobile and stationary measurements |
| VerfasserIn |
I. Ježek, L. Drinovec, L. Ferrero, M. Carriero, G. Mocnik |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 8, no. 1 ; Nr. 8, no. 1 (2015-01-06), S.43-55 |
| Datensatznummer |
250116037
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| Publikation (Nr.) |
 copernicus.org/amt-8-43-2015.pdf |
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| Zusammenfassung |
| We have used two methods for measuring emission factors (EFs) in real driving
conditions on five cars in a controlled environment: the stationary method,
where the investigated vehicle drives by the stationary measurement platform
and the composition of the plume is measured, and the chasing method, where
a mobile measurement platform drives behind the investigated vehicle. We
measured EFs of black carbon and particle number concentration. The
stationary method was tested for repeatability at different speeds and on a
slope. The chasing method was tested on a test track and compared to the
portable emission measurement system. We further developed the data
processing algorithm for both methods, trying to improve consistency,
determine the plume duration, limit the background influence and facilitate
automatic processing of measurements. The comparison of emission factors
determined by the two methods showed good agreement. EFs of a single car
measured with either method have a specific distribution with a
characteristic value and a long tail of super emissions. Measuring EFs at
different speeds or slopes did not significantly influence the EFs of
different cars; hence, we propose a new description of vehicle emissions that
is not related to kinematic or engine parameters, and we rather describe the
vehicle EF with a characteristic value and a super emission tail. |
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