Topics / In-use NOx emissions

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The modifications required by US regulators to VW diesel engines designed to cheat emissions tests are more stringent and more effective than in Europe.

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.

2017.06.29

The DO Lectures are "an inexplicable cross section between a festival and a conference." ICCT Senior Fellow John German was invited to participate in DO Wales 2016. His presentation was titled "Seeing through the Hype."

Event
2017.06.26

Results of a project by the International Centre of Automotive Technology (ICAT), in India, to conduct laboratory and on-road testing of three in-use vehicles, using a portable emissions measurement system, over a variety of drive cycles and routes.

Publication: Consultant report
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

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