Analysis of the high instantaneous NOx emissions from Euro 6 diesel passenger cars under real driving conditions

Zamir Mera, Natalia Fonseca, José-María López and Jesús Casanova

Applied Energy, 2019, vol. 242, issue C, 1074-1089

Abstract: In real-world driving, most Euro 5 and 6 diesel passenger cars exceed the nitrogen oxides (NOx) emission limits of type approval procedure. The emission factors of the fleet of Euro 6 vehicles show high variability, irrespective of the NOx control technology. This comprehensive study focused on the events of high instantaneous NOx emissions produced under real driving, to assess their impact on emission factors. Additionally, the relationships of these events with different parameters measured using portable emissions measurement system (PEMS) were determined. Three Euro 6b diesel passenger cars with exhaust gas recirculation (EGR), lean-burn NOx trap (LNT) and selective catalytic reduction (SCR) were tested based on the real driving emissions (RDE) regulation.

Keywords: NOx; Real driving emissions (RDE) test; Portable emissions measurement system (PEMS); Diesel exhaust after-treatment; Passenger cars (search for similar items in EconPapers)
Date: 2019
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Citations: View citations in EconPapers (24)

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DOI: 10.1016/j.apenergy.2019.03.120

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