Strong Temperature Dependence for Light-Duty Diesel Vehicle NO _x Emissions.

ABSTRACT: Diesel-powered road vehicles are important sources for nitrogen oxide (NO _x) emissions, and the European passenger fleet is highly dieselised, which has resulted in many European roadside environments being noncompliant with legal air quality standards for nitrogen dioxide (NO₂). On the basis of vehicle emission remote sensing data for 300000 light-duty vehicles across the United Kingdom, light-duty diesel NO _x emissions were found to be highly dependent on ambient temperature with low temperatures resulting in higher NO _x emissions, i.e., a "low temperature NO _x emission penalty" was identified. This feature was not observed for gasoline-powered vehicles. Older Euro 3 to 5 diesel vehicles emitted NO _x similarly, but vehicle

SUBMITTER: Grange SK 

PROVIDER: S-EPMC7007213 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature