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Will the future RDE regulation be enough to restore trust in diesel technology?

The Volkswagen Group (including Audi and Porsche), Opel, Fiat, Renault, and now Daimler are recalling millions of diesel vehicles for a software update. All of these manufacturers claim their... The success of the RDE regulation will depend on the will of manufacturers to prove that they have learned a lesson from Dieselgate by beginning to focus on reducing real-world emissions, not just...
Published 2017.08.30: Blog Post

Real-world emissions testing on four vehicles

We commissioned the Laboratory of Applied Thermodynamics, of the Aristotle University of Thessaloniki, and its spin-off company, Emisia, to investigate real-world emissions of four Euro 6 passenger...
Published 2017.08.29: Publication

Too low to be true? How to measure fuel consumption and CO2 emissions of plug-in hybrid vehicles, today and in the future

The global market for electric vehicles is growing rapidly and plug-in hybrid electric vehicles (PHEVs) play a particularly important role given their relatively high market share – accounting for...
Published 2017.07.28: Publication

Market surveillance of vehicle emissions: Best-practice examples with respect to the European Commission's proposed type-approval framework regulation

On January 27, 2016, the European Commission (EC) proposed a new motor vehicle type-approval framework that will, if adopted, make fundamental and far-reaching changes to the existing Framework...
Published 2017.07.13: Publication

Fiat-Chrysler, Renault-Nissan . . . who might be next?

The news earlier this month that the U.S. EPA had issued a Notice of Violation to Fiat-Chrysler for failing to inform the agency of several software "devices" that alter the behavior of the emissions... The current investigations might not prove that Fiat-Chrysler or Renault-Nissan used defeat devices per se, but these recalls confirm that automakers can do more than just the minimum necessary to...
Published 2017.01.30: Blog Post

Real-Driving Emissions test procedure for exhaust gas pollutant emissions of cars and light commercial vehicles in Europe

Two legislative packages are currently under development to complete implementation of the new real-driving emissions (RDE) test procedure for measuring vehicle emissions in Europe. The goal is to...
Published 2017.01.12: Publication

Impact of improved regulation of real-world NOx emissions from diesel passenger cars in the EU, 2015−2030

NOx emissions from diesel cars in the EU have remained high, largely due to a growing gap between emission certification limits of Euro 4 and Euro 5 standards (measured in laboratory testing) and “...
Published 2017.01.12: Publication

Adding to the pile of evidence: Recent on-road testing results for CO2 and exhaust emissions from Euro 6 light-duty vehicles in the EU

In late 2015, in the immediate aftermath of the revelations about Volkwagen's cheating on vehicle certification tests in the United States, we commissioned Emissions Analytics, a commercial testing... Summarizes the Emissions Analytics testing on nitrogen oxides (NOx) and particulates, both of which pose significant health problems, and CO2 which is vehicles' main contribution to climate...
Published 2016.11.14: Blog Post

Reducing vehicle emissions in Turkey

Turkey is one of the largest vehicle manufacturing countries in the world, and the auto industry plays a key role in the Turkish economy. For Turkey, it is of particular importance to ensure that...
Published 2016.08.17: Publication

Assessing real-world CO2 emissions using simulation and PEMS data

The Real Driving Emissions (RDE) testing procedure will introduce on-road testing as well as not-to-exceed emission limits for new passenger cars in Europe. However, for the time being, these on-...
Published 2016.06.21: Publication

Briefing on the EU Vehicle Emissions Testing Scheme

ICCT organized this briefing in collaboration with Daniel Dalton, MEP, in view of the ongoing discussions over the type-approval framework regulation, to provide Members of the European Parliament...
Published 2016.06.04: Event

The emissions test defeat device problem in Europe is not about VW

Ever since the VW defeat device scandal broke last September, the big question has been: Are other manufacturers also using defeat devices? Immediately following the first VW revelations, the French... The methods used by other manufacturers to tell when a vehicle is not on a test cycle may differ from VW's, but they are still improperly reducing the effectiveness of emission controls in the real...
Published 2016.05.12: Blog Post

Official vs. real-world road-load parameters in EU vehicle efficiency testing

On average, real-world fuel consumption and CO2 emissions of new European passenger cars exceeded official vehicle type-approval values by approximately 40 percent in 2014. This paper shows that...
Published 2016.05.09: Publication

Review of LDV OBD requirements under the European, Korean and Californian emission programs

On-board diagnostic (OBD) systems monitor the performance of engine and aftertreatment components, especially those responsible for controlling harmful pollutant emissions. The OBD system does not...
Published 2016.03.31: Publication

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 European Real-Driving Emissions Regulation

Beginning in 2017, the European Union’s emissions type-approval procedure for passenger cars will include a new Real-Driving Emissions (RDE) test conducted using on-board portable emissions...
Published 2015.12.28: Publication

Constant-speed fuel consumption testing of heavy-duty vehicles in India

As policymakers in India deliberate on how best to design a regulation to improve the efficiency of new heavy-duty vehicles (HDVs), one of the most critical issues is what test methods and duty...
Published 2015.11.09: Publication

Dispelling some myths about the gap between test-lab and real-world vehicle CO2 emissions

We've just released the annual update to our From Laboratory to Road series, which documents the growing gap between official, or type-approval, CO2 emissions from passenger cars in Europe and their... An explanation of what has and has not caused the gap between test-lab and real-world vehicle CO2 emissions to increase by over 30 percentage points in just over a decade.
Published 2015.09.30: Blog Post

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

Vehicle emissions testing in the EU: Why we are still struggling with the dead hand of the past—and what the future is likely to bring

The Committee on Climate Change (CCC) was established in 2008 to advise the British government on emissions targets and report to Parliament on progress made in reducing greenhouse gas emissions and... Manufacturers effectively exploit loopholes in the vehicle CO2 emissions test procedure. The WLTP will help, but can't solve the problem entirely; we need in-use conformity and on-road testing in...
Published 2015.09.09: Blog Post

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