Engine Dynamometer and Vehicle Performance of a Urea SCR-System for Heavy-Duty Truck Engines 2002-01-0286
The application of SCR deNOx aftertreatment was studied on two about 12 liter class heavy-duty diesel engines within a consortium project. Basically, the system consists of a dosage system for aqueous urea injection and a vanadia based SCR catalyst, without an upstream or downstream oxidation catalyst.
The urea injection system for a DAF and a Renault V.I. (Véhicules Industriels) diesel engine was calibrated on the engine test bench taking into account dynamic effects of the catalyst. For both engine applications NOx reduction was 81% to 84% over the ESC and 72% over the ETC. CO emission increased up to 27%. PM emission is reduced by 4 to 23% and HC emission is reduced by more than 80%. These results are achieved with standard diesel fuel with about 350 ppm sulfur.
The test engines and SCR deNOx systems were built into a DAF FT95 truck and a Renault V.I. Magnum truck. Tests on the vehicle dynamometer with the DAF truck have shown that after 60,000 km in operation NOx conversion and ammonia slip are still the same.
Citation: van Helden, R., van Genderen, M., van Aken, M., Verbeek, R. et al., "Engine Dynamometer and Vehicle Performance of a Urea SCR-System for Heavy-Duty Truck Engines," SAE Technical Paper 2002-01-0286, 2002, https://doi.org/10.4271/2002-01-0286. Download Citation
Rinie van Helden, Marcel van Genderen, Marc van Aken, Ruud Verbeek, Joseph A. Patchett, Jan Kruithof, Ted Straten, Claire Gérentet de Saluneaux
TNO Automotive, Engelhard Corporation, DAF Trucks, Renault V.I.
SAE 2002 World Congress & Exhibition
Diesel Exhaust Emissions Control 2002: SCR, HC De-NOx, and Measurement-SP-1674, SAE 2002 Transactions Journal of Engines-V111-3