A Mercedes Vito being tested at the Empa chassis dynamometer. Image: Empa
Diesel vans are dirtier in winter than many know: Where there are still gaps in emissions legislation, soot particles and nitrogen oxides (NOx) continue to be produced. This and more was discussed by130 international exhaust gas cleaning experts at the 10th VERT Forum at the Empa Academy. Approximately 100 million vehicles with combustion engines roll off the assembly line every year, and around one billion such vehicles are in use worldwide. Fortunately, interest in exhaust purification technologies is also growing, as was evident at the 10th VERT Forum at the Empa Academy on 14 March. With 130 participants, the conference set a new visitor record - the guests came from China, South Korea, South Africa, Mexico, Israel and many other European countries. Two presentations by Empa exhaust gas experts opened the conference: Norbert Heeb, a specialist in the analysis of soot particles, spoke about measurements on petrol-powered cars whose emissions have not yet been regulated by law. Thomas Bütler, specialist for exhaust gas measurements, found considerable NOx emissions in delivery vans.
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