The present invention relates to a method and system for reducing emission of nitrogen oxides (NOx) and particular matter being present in the exhaust from a lean burning internal compression ignition engine. In particular, the method and system of the invention provides an improved reduction of NOx during cold start of the engine. The invention presents a process configuration with two SCR catalyst units in series and two reductant injection points, one upstream of the first and another upstream of the second SCR unit, wherein reductant is injected through the first injection point at cold start of the engine and through the second injection point at an exhaust gas temperature above 220 deg

Method and System for the Removal of Noxious Compounds from Engine Exhaust Gas

FORZATTI, PIO;NOVA, ISABELLA;TRONCONI, ENRICO;
2012-01-01

Abstract

The present invention relates to a method and system for reducing emission of nitrogen oxides (NOx) and particular matter being present in the exhaust from a lean burning internal compression ignition engine. In particular, the method and system of the invention provides an improved reduction of NOx during cold start of the engine. The invention presents a process configuration with two SCR catalyst units in series and two reductant injection points, one upstream of the first and another upstream of the second SCR unit, wherein reductant is injected through the first injection point at cold start of the engine and through the second injection point at an exhaust gas temperature above 220 deg
2012
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/691101
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