Search Results

Impacts and mitigation of excess diesel NOx emissions in 11 major vehicle markets

A new study published online May 15 in the journal Nature quantifies the global health and environmental burden of real-world diesel NOx emissions in 11 major vehicle markets. The study found that...
Published 2017.05.22: Event

Impacts and mitigation of excess diesel NOx emissions in 11 major vehicle markets

Access publication here: Nature, 25 May 2017, doi:10.1038/nature22086 Nitrogen oxide (NOx) emissions from diesel cars, trucks, and buses are a major contributor to air pollution-related deaths...
Published 2017.05.15: Publication

Taking stock of the VW settlement agreement

On June 28, more than 9 months after the "Dieselgate" story broke, Volkswagen agreed to a $14.7 billion partial settlement designed to do three things: compensate consumers for advertising fraud;...Considering how much the likelihood of discovery and the magnitude of the consequences have increased in just nine months, it’s safe to say that the odds in favor of a genuinely cleaner...
Published 2016.07.15: Blog Post

Opel's admissions of defeat device calibrations

A little while ago I blogged about the widespread practice by automakers in the EU of reducing nitrogen oxide (NOx) emission controls at ambient temperatures below 10 °C–17 °C and after a hot restart...Opel admits to reducing vehicle emission controls based on conditions other than ambient temperature or restart. Opel says its “engines are in compliance” in Europe. But, once again, they would not...
Published 2016.06.15: 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

Defeat devices under the U.S. and EU passenger vehicle emissions testing regulations

The paper aims to illuminate a paradox: Volkswagen and other automakers have asserted that software managing the emissions control systems on some of their vehicles, which they acknowledge either is...
Published 2016.03.22: Publication

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

Policy solutions to reduce vehicle exhaust emissions under real-world driving conditions

Policymakers worldwide are looking for ways to address the challenge of controlling real-world emissions brought to forefront by the Volkswagen case. In this position brief, we propose a rapid and...
Published 2015.10.01: Publication

FAQ: In-use NOx emissions from diesel passenger cars

As the story concerning in-use NOx emissions from diesel passenger vehicles continues to unfold, a number of questions concerning the ICCT's past and on-going research into discrepancies between...
Published 2015.09.25: News

EPA's notice of violation of the Clean Air Act to Volkswagen [press statement]

Investigation into "defeat device" allegedly used to circumvent emissions tests began with ICCT-sponsored research on in-use emissions from diesel passenger cars Highlights the global need for...
Published 2015.09.18: News

Real-world exhaust emissions from modern diesel cars

This study, a meta-analysis of PEMS data from EU (Euro 6) and US (Tier 2 Bin 5/ULEV II) diesel passenger cars, documents the wide discrepancy that exists between official certification or type-...
Published 2014.10.11: Publication

In-use emissions testing of light-duty diesel vehicles in the U.S.

The ICCT contracted with the Center for Alternative Fuels, Engines and Emissions at West Virginia University to conduct in-use testing of three light-duty diesel vehicles, using a portable emissions...
Published 2014.05.30: Publication