Approaches for detecting high NOx emissions of aged petrol cars during the periodic technical inspection

Emission tests in earlier TNO studies show that a small group (6%) of petrol passenger cars, with a malfunctioning three-way catalytic converter, account for a large proportion (36%) of the total NOx emissions of passenger cars. NOx emissions in vehicles with a defective three-way catalytic converter can increase by a factor of 10 or more...

New EU and UN/ECE Vehicle noise emission limits and associated measurement methods

In 2013 or early 2014 the European Union will decide upon a new “Regulation on the sound level of motor vehicles”. It will specify a new type approval test method for noise emission and will give revised limit values for the permissible noise emission per vehicle (sub- category. The new regulation may be seen as a final stage of a long series of...

A decision framework for placement of applications in clouds that minimizes their carbon footprint

Cloud computing gives users much freedom on where they host their computation and storage. However the CO2 emission of a job depends on the location and the energy efficiency of the data centers where it is run. We developed a decision framework that determines to move computation with accompanying data from a local to a greener remote data...

Verkennende metingen van schadelijke uitlaatgasemissies van personenvoertuigen met Euro-6 dieseltechnologie