EXHAUST AFTERTREATMENT DEVICE FOR AFTERTREATMENT OF EXHAUST OF AN INTERNAL COMBUSTION ENGINE

摘要

An exhaust aftertreatment device for aftertreatment of exhaust gas of an internal combustion engine includes an SCR catalyst for selective catalytic reduction, a feeding apparatus for adding a reductant at an entry point upstream of the SCR catalyst to the exhaust gas, and a mixing apparatus arranged in a flow direction of the exhaust gas between the entry point and the SCR catalyst. The mixing apparatus includes a mixing element and a catalyst element, with the catalyst element having in the flow direction of the exhaust gas a cross sectional area which is smaller than a cross sectional area of the mixing element.

主权项

1. An exhaust aftertreatment device for aftertreatment of exhaust gas of an internal combustion engine, comprising
an SCR catalyst for selective catalytic reduction; a feeding apparatus for adding a reductant at an entry point upstream of the SCR catalyst to the exhaust gas; and a mixing apparatus arranged in a flow direction of the exhaust gas between the entry point and the SCR catalyst, said mixing apparatus including a mixing element and a catalyst element, with the catalyst element having in the flow direction of the exhaust gas a cross sectional area which is smaller than a cross sectional area of the mixing element.