NO2 emissions from passenger cars
conference paper
Although emission of total oxides of nitrogen (NOX) have dropped considerably, they remain problematic in relation to road transport, with ambient concentrations of nitrogen dioxide (NO2) near main roads close to or in exceedance of the limit values set for the European Union for 2010. At the Transport and Air Pollution conference in 2003 the state of knowledge on the topic was reported. A small number of measurements with non-standardized measurement methods lead to a diffuse picture of the topic. Particular attention has been drawn to the relatively high primary NO2 emissions associated with oxidation catalysts fitted to diesel passenger cars and certain types of regenerative particulate traps, fitted to HGVs and buses. This paper is based on new insights from dedicated measurement emission programs in the Netherlands and Switzerland, input from the automotive industry (ACEA) and emission tests and ambient air quality measurements in the UK. As such this paper presents a state-of-the-art overview of the current knowledge about the measurement of tail-pipe NO2 and the causes and impacts of the direct NO2 emission from modern road vehicles and discusses sensitive technologies.
TNO Identifier
800266
Source title
2nd conference Environment & Transport, incl. 15th conference Transport and Air Pollution, Reims, Frankrijk
Place of publication
Delft
Pages
175-182
Files
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