The science behind the Volkswagen emissions scandal

  title={The science behind the Volkswagen emissions scandal},
  author={Quirin Schiermeier},
Debacle has wide-ranging implications, but many already knew that diesel emissions tests were problematic. 
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On-road operations of Volkswagen light-duty diesel vehicles equipped with defeat devices cause emissions of NOx up to 40 times above emission standards. Higher on-road NOx emissions are a widespreadExpand
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Owing to Europe’s climate, a predicted average of 38% more NOx emissions have burdened Europe when compared to temperatures encountered in laboratory test cycles, however, owing to the progressive elimination of vehicles demonstrating the most severe low temperature NOx penalty, light-duty diesel Nox emissions are likely to decrease more rapidly throughout Europe than currently thought. Expand
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On-road emissions of light-duty vehicles in europe.
The first comprehensive on-road emissions test of light-duty vehicles with state-of-the-art Portable Emission Measurement Systems finds that nitrogen oxides emissions of gasoline vehicles as well as carbon monoxide and total hydrocarbon emissions of both diesel and gasoline vehicles generally remain below the respective emission limits. Expand
Will Euro 6 reduce the NOx emissions of new diesel cars? – Insights from on-road tests with Portable Emissions Measurement Systems (PEMS)
Abstract The nitrogen dioxide (NO 2 ) pollution in urban areas of Europe can be partially attributed to the increasing market penetration of diesel cars that show higher distance-specific nitrogenExpand