Emissions from Euro 3 to Euro 6 light-duty vehicles equipped with a range of emissions control technologies

ABSTRACT From 2008 to 2012, AECC, the Association for Emissions Control by Catalyst, conducted a ‘rolling programme’ of emissions tests on light-duty vehicles at an independent laboratory. In addition to assessment of regulated gaseous and particulate emissions over the legislative driving cycle (NEDC; New European Driving Cycle), the work included testing over the set of Common Artemis Driving Cycles (CADC) that incorporate more transient operating modes derived from real-world driving and that are widely used as the basis of emissions factors for modelling of emissions. All tests included particulate mass and particle number emissions using the PMP (Particle Measurement Programme) procedures developed under the UNECE – GRPE. The vehicle range covered stoichiometric port fuel injection (PFI) and direct injection (DI) petrol vehicles, lean-burn DI petrol vehicles, and diesels with and without particulate filters. The most recent examples include diesel vehicles fitted with both NOx and particulates control systems. The vehicles chosen covered a wide selection of the European market, with engine capacities ranging from 1.2 to 3.5 litres and power outputs of between 60 and 220 kW. The results show the variations between technologies as well as the potential effectiveness of emissions control technologies over different test cycles.