Field Test Experience of a Combined DPF and Urea-SCR System Achieving EPA'07 Emission Levels 2005-01-3575
On-road emission measurements of 23 VN-trucks on a randomly chosen driving cycle, consisting of 10 miles two-lane and 8 miles four-lane road, showed tailpipe NOx emissions on fleet average of 0.96 g/bhp-hr, or 1.06 g/bhp-hr when including the time the exhaust gas temperature was below 200°C. Complementary measurements in a SET-cycle (13 point OICA -cycle) on a chassis dynamometer showed a tailpipe emission of 0.008 g PM per bhp-hr. Moreover, cost analysis show that the diesel fuel consumption remains unchanged whether the truck running on ULSD is equipped with a Combined Exhaust gas AfterTreatment System (CEATS) installed or not.
Andreas Hinz, Timothy Jarvis, Miroslawa Abul-Milh, Pascal Amar, Sara Erkfeldt, Bengt Otterholm, Ronny Allansson, Philip G. Blakeman, Mats Lavenius, Andrew P. Walker, James McGeehan, John W. Geyer, Keith Narasaki, Klaus J. Wiemers
Volvo Powertrain, Volvo Trucks North America, Volvo Technology, Johnson Matthey, Environmental Catalysts and Technologies, Chevron, Bosch