Patent ID: 7448201

Claim:
A method for the treatment of a fluid in an exhaust gas treatment system having an exhaust gas flow direction, which comprises the following steps: producing the exhaust gas with an engine; introducing a regenerating substance with an injection device; controlling the engine and the injection device with an engine control; providing a honeycomb body disposed last in the exhaust gas flow direction through the system, the honeycomb body having an inlet surface, an outlet surface and a honeycomb structure through which the fluid can flow, the honeycomb structure disposed between the inlet surface and the outlet surface, and the honeycomb structure having a storage device in the form of an adsorbent coating for storing at least one component of the fluid; regenerating the storage device with the injection device; and determining a concentration of at least nitrogen oxides in the component to be stored in the fluid in the honeycomb structure at a given minimum distance from the outlet surface to prevent a breakthrough of at least nitrogen oxides in the component.