On-road emissions of passenger cars beyond the boundary conditions of the real-driving emissions test

Environmental Research
Ricardo Suarez-BertoaCovadonga Astorga

Abstract

Passenger cars are an important source of air pollution, especially in urban areas. Recently, real-driving emissions (RDE) test procedures have been introduced in the EU aiming to evaluate nitrogen oxides (NOx) and particulate number (PN) emissions from passenger cars during on-road operation. Although RDE accounts for a large variety of real-world driving, it excludes certain driving situations by setting boundary conditions (e.g., in relation to altitude, temperature or dynamic driving). The present work investigates the on-road emissions of NOx, NO2, CO, particle number (PN) and CO2 from a fleet of 19 Euro 6b, 6c and 6d-TEMP vehicles, including diesel, gasoline (GDI and PFI) and compressed natural gas (CNG) vehicles. The vehicles were tested under different on-road driving conditions outside boundaries. These included 'baseline' tests, but also testing conditions beyond the RDE boundary conditions to investigate the performance of the emissions control devices in demanding situations. Consistently low average emission rates of PN and CO were measured from all diesel vehicles tested under most conditions. Moreover, the tested Euro 6d-TEMP and Euro 6c diesel vehicles met the NOx emission limits applicable to Euro 6d-TEMP diese...Continue Reading

Citations

Nov 23, 2020·The Science of the Total Environment·Ran TuMarianne Hatzopoulou
May 5, 2021·The Science of the Total Environment·Xianbao ShenZhiliang Yao
Jul 1, 2020·Environmental Science & Technology·Raimund WalterOlaf Hinrichsen

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