NO x reduction in the exhaust of mobile heavy-duty diesel engines by urea-SCR
Koebel, M. ; Elsener, M. ; Kröcher, O. ; Schär, Ch ; Röthlisberger, R. ; Jaussi, F. ; Mangold, M.
In: Topics in Catalysis, 2004, vol. 30-31, no. 1-4, p. 43-48
Zum persönliche Liste hinzufügen- Summary
- A DeNO x demonstration system for a diesel engine used in construction machineries and mobile cranes was setup. In preliminary experiments various extruded and coated SCR catalysts were evaluated with and without oxidizing pre-catalyst. The data from stationary tests with two selected catalysts were used to establish various model-based control algorithms for the optimum dosage of urea in the ESC and ETC. A NO x conversion of >93% at <10ppm average ammonia slip could be achieved at a converter-to-swept volume ratio of <2.0