Topics / In-use NOx emissions

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In September, China’s Ministry of Environmental Protection issued the first national standard for portable emission measurement system (PEMS) testing of heavy-duty vehicles (HDVs). This regulation is a supplement to all existing requirements under the China V standard, and it requires additional on-road PEMS testing for new and in-use China V HDVs.

Compares official laboratory-test and on-road nitrogen oxide (NOx) emissions for 541 Euro 5 and Euro 6 diesel passenger cars, representing 145 of the most popular European models.

A report investigating the real-world emissions of four Euro 6 passenger cars—one gasoline and three diesel vehicles with different aftertreatment technologies, tested under variable conditions. The investigation was conducted by the Laboratory of Applied Thermodynamics, of the Aristotle University of Thessaloniki, and its spin-off company, Emisia.

2017.05.31
São Paulo’s Environmental Agency, CETESB, announced in February 2017 that new heavy-duty vehicle emissions
Blog Post
2017.05.22

Join us for a global webinar with the study authors to gain a deeper understanding of the motivation for this work, the approach, and the major findings.

Event
2017.05.15

Diesel vehicles in major markets produce over 50% more NOx than official certification limits indicate. Study links these excess NOx emissions to ~38,000 premature deaths worldwide in 2015—mostly in the EU, China, and India. 

Publication: Report
2017.02.10
I am completely befuddled. Once again, a European manufacturer has admitted they change emission control calibrations to increase emissions under normal driving conditions – but somehow they seem to believe this is OK.
Blog Post
2017.01.30
The news earlier this month that the U.S.
Blog Post
2017.01.05

Identifies key differences in the regulations governing certification of NOx emissions from diesel cars (Euro 6) and trucks (Euro VI) that help explain differences in their real-world emissions performance. Ultimately, an examination of the HDV regulation reveals insights that could be used to improve the LDV regulation.

Publication: Briefing
2016.11.14

Summarizes results from on-road testing of seven Euro 6-regulated gasoline and diesel vehicles carried out by Emissions Analytics between 2015 and 2016 concerning emissions of carbon monoxide (CO), carbon dioxide (CO2), nitric oxide (NO), nitrogen dioxide (NO2), and particulates.

Publication: Consultant report
2016.08.12

Legal note from Défense Terre analyzing the U.S. vehicle emissions regulation and associated guidance documentation and proposing areas where the European Union's type approval framework text could benefit from improved language.

Publication: Consultant report

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