Naslov
Increase in nitrogen oxides due to exhaust gas recirculation valve manipulation

Autori
Rešetar, Marko ; Pejić, Goran ; Ilinčić, Petar ; Kozarac, Darko ; Lulić, Zoran

Izvornik
Transportation Research Part D: Transport and Environment (1361-9209) 109 (2022); 1-15

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Nitrogen oxides ; Emission factor ; Exhaust gas recirculation ; Chassis dynamometer ; Driving cycle

Sažetak
Exhaust gas recirculation (EGR) is a known method of reducing nitrogen oxides (NOX), but the impact of its deactivation on emissions has not been quantified. This paper, therefore, considers the impact of deactivating the EGR valve on NOX emissions in a diesel Euro 5 vehicle. The measurements were performed during nine driving cycles and in all cases, a significant increase in NOX emissions was found when the EGR valve was deactivated. NOX emissions increased between 176% and 407%, depending on the cycle driven. Measurement results indicate the origin of significant amounts of NOX emissions. Recommendations are to inform regulatory authorities about the effects of such manipulations in order to adopt more stringent measures and introduce them during periodic technical inspections of vehicles with the view to preventing such interventions.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo, Tehnologija prometa i transport, Temeljne tehničke znanosti, Interdisciplinarne tehničke znanosti

POVEZANOST RADA