Extrem niedrige NOx-Emissionen durch motornahe Abgasnachbehandlung in einer Heavy Duty Truck-Anwendung

Autoren

P. Mendoza, J. Demuynck, D. Bosteels, AECC aisbl; T. Wilkes, L. Robb, P. Recker, FEV Europe GmbH

Zusammenfassung

Heavy-duty vehicles represent a significant portion of road transport and they need to operate in a clean and efficient manner. Further improvement of their emission control systems to achieve high conversion efficiency under wide operating conditions is needed.

The European Commission is developing legislative proposals for Euro 7 and VII emissions regulations for light- and heavy-duty vehicles. The new Euro VII regulation will likely focus on ensuring that the emissions from heavy-duty vehicles are minimized over extensive on-road operating conditions and in particular for urban driving and cold-start operation. These challenges are increased by the need to ensure low emissions of NH3 and N2O as well as low impact on CO2 emissions.

This paper outlines the low pollutant emissions achieved by a heavy-duty diesel demonstrator vehicle. The vehicle is equipped with an innovative layout of state-of-the-art emission control technologies, combined with an advanced engine strategy on an existing Euro VI long-haul truck. The new emissions control system integrates a close-coupled DOC, a catalyzed DPF, dual-SCR system -one in a close-coupled position-, with twin AdBlue® dosing controlled by FEV developed software. Both SCR catalysts contain an ammonia slip catalyst...

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