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The WLTP: How a new test procedure for cars will affect fuel consumption values in the EU

The current European type-approval procedure for fuel consumption and CO2 emissions of cars (the New European Driving Cycle, or NEDC) includes a number of tolerances and flexibilities and no longer...
Published 2014.10.29: Publication

Discrepancies between type-approval and real-world fuel consumption and CO2 values in 2001-2011 European passenger cars

In order to limit the negative effects of climate change and to reduce dependency on oil imports, the European Union (EU) needs to reduce its GHG emissions by 80-95% below 1990 levels by 2050. A...
Published 2012.04.04: Publication

Focus on inertia classes

For historic reasons we make use of inertia classes and upper limits for inertia mass during the vehicle testing procedures today. Historically, the weight of a vehicle was represented by hanging...
Published 2011.10.19: Publication

Inertia classes proposal

Historically the weight of a vehicle was represented by hanging rotating inertia mass on a dynamometer. This approach required the use of discrete inertia classes and an upper limit for inertia mass...
Published 2011.06.17: Publication

Inertia classes in worldwide harmonized light vehicle test procedure (WLTP) development

The definition of vehicle weight used for testing procedures is an important decision when drafting the regulation on determining emission values under the WLTP. Currently, different inertia class...
Published 2011.05.18: Publication