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umwelt-plakette.de Aktuelles 2018-08-16

News on environmental zones and air pollution

Deutsche Umwelthilfe and Retrofitting

The environmental association has investigated how the retrofits and/or software updates are effective in reducing nitrogen oxide emissions. Despite an average reduction of 30%, allowed limits values remain exceeded. Hardware retrofitting is therefore preferable: SCR catalytic converters reduce for instance NOx emissions by up to 80 %.