New emission deterioration rates for gasoline cars - Results from long-term measurements
Publikation: Beitrag in Fachzeitschrift › Forschungsartikel › Beigetragen › Begutachtung
Beitragende
Abstract
Vehicle emission control systems have been found to degrade with use resulting in increasing emission rates with vehicle age. Standard European data for deterioration factors have only been based on a sample of vehicles with limited high mileage ranges, with only few Euro 3 and Euro 4 vehicles, and on laboratory tests only. Here we present deterioration rates derived from more than 110'000 records collected over the past thirteen years from on-road emission remote sensing in Zurich/Switzerland. Deterioration rates for hot NOx and CO emissions of older gasoline vehicles are much lower than assumed so far, but significantly higher for Euro 3 and Euro 4 cars. There is no evidence of high emitters but equipment gradually degrades across the fleet. Deterioration rates do not seem to depend on engine load. Routine idle emission tests have not resulted in measurable emission reductions of the inspected vehicles. National emission inventories should be updated in the light of this new data.
Details
Originalsprache | Englisch |
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Seiten (von - bis) | 58-64 |
Seitenumfang | 7 |
Fachzeitschrift | Atmospheric Environment |
Jahrgang | 101 |
Publikationsstatus | Veröffentlicht - 1 Jan. 2015 |
Peer-Review-Status | Ja |
Extern publiziert | Ja |
Externe IDs
ORCID | /0000-0002-5465-8559/work/150883957 |
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Schlagworte
ASJC Scopus Sachgebiete
Schlagwörter
- COPERT, Degradation, Emission controls, High emitter, Light duty vehicles, Remote sensing