Search Results

New study quantifies global health, environmental impacts of excess nitrogen oxide emissions from diesel vehicles

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...
Published 2017.05.15: News

Defeat device testing in the EU: So far, not so good

Conclusively determining whether or not a vehicle has a defeat device to circumvent emissions tests is difficult. Really difficult. That is because a defeat device, as defined in EU regulation, is:...The post-VW vehicle testing by Germany, the UK, and France suggest that defeat devices are being employed in Europe that have yet to be detected. But further testing is needed if the goal is to...
Published 2016.04.28: Blog Post

First look: Results of post-VW diesel vehicle testing in France, UK

On April 7, the French government released initial results of the diesel emissions screening campaign it conducted in the wake of the revelations about VW's use of defeat devices. The UK and Germany...Further summary of initial results of diesel emissions screening tests being conducted in Europe in the wake of last year's revelations about VW's use of defeat devices.
Published 2016.04.28: Blog Post

The future of vehicle emissions testing and compliance

A growing body of evidence indicates that one of the reasons for a rapidly growing discrepancy between official and real-world fuel consumption and emission values of new passenger cars is...
Published 2015.11.23: Publication

The miseducation of the diesel car

I recently read an open letter in the Corriere della Sera by a VW engineer working on engine development and emissions (that’s what I call a hot seat!). The letter contains some pretty remarkable...The preliminary agreement on the EU's Real-Driving Emissions regulation is a missed opportunity to address the air-quality problem by forcing the technological adjustments required to bring real...
Published 2015.11.04: Blog Post

Brazil is not ready for diesel cars

The Portuguese version of this blog was developed by Instituto de Energia e Meio Ambiente (IEMA). Sales of diesel passenger cars and commercial vehicles with capacity inferior to 1,000 kg have been...Brazil should hold the line and continue to ban sales of diesel passenger cars.
Published 2015.09.28: Blog Post

[Press release] Vehicle tests show dramatic variation in NOx emissions from modern diesel cars on new EU test cycle, with exceedances up to 15 times the current regulatory limit

Some automakers meeting diesel NOx emissions standards under more realistic driving conditions, while others lag badly. The technologies to control emissions of nitrogen oxides (NOx) from modern...
Published 2015.09.03: News

NOx control technologies for Euro 6 diesel passenger cars

Controlling nitrogen oxide (NOx) emissions from Euro 6 diesel passenger cars is one of the biggest technical challenges facing automakers. Euro 6 limits NOx emissions from diesel passenger cars to 80...
Published 2015.09.03: Publication

Review and comparative analysis of in-use vehicle emission control programs in Guangdong Province

Controlling emissions from the in-use fleet, particularly from high emitters and older vehicles, can immediately alleviate urban air pollution. As pressure to address China's air quality issues...
Published 2015.06.29: Publication

Want to help China's smog problem? Some lessons learned from the U.S. Clean Air Act

Over the past two weeks, former CCTV reporter Chai Jing’s documentary “Under the Dome – Investigating China’s Smog” caused a sensation in China and the rest of the world. We were (naturally)...China is in the process of amending its Clean Air Law. Experience with the CAA highlights some key principles that can help give environmental agencies the teeth they need.
Published 2015.03.13: Blog Post

Laboratory versus real world: Discrepancies in NOx emissions in the EU

Last week we published the new edition of our pocketbook of European Vehicle Market Statistics. For those interested in road vehicles and their impact on our climate and air quality, the pocketbook...NOx emissions from gasoline cars in the EU have decreased significantly since 2000. Not so for diesel cars, and the increasing numbers of diesel vehicles is intensifying the resulting health problems...
Published 2012.11.07: Blog Post

Reducing pollutant emissions and fuel consumption in 2- and 3-wheelers in India: A technical assessment

Motorcycle sales in India have been growing at double-digit rates, and recently passed the million-vehicle-per-month mark. With annual sales five times those of passenger cars, motorcycles dominate...
Published 2012.10.15: Event

Reducing Vehicular Emissions in India (webinar notes)

The initial ICCT India team webinar on India's vehicle emissions and fuels policies, broadcast April 26, was well received. We had a little trouble with recording the webinar, so we can't make the...Presentation and some follow-up from a webinar broadcast by the India team 26 April 2012.
Published 2012.05.02: Blog Post