Method for metering a reagent into a flowing medium
AssigneeSiemens Aktiengesellschaft
InventorHelmut Schmelz
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Abstract
A method for metering a reagent into a flowing medium includes adjusting a quantity of a reagent to be metered per unit of time into a flowing medium as a function of a thickness of a reaction zone in a catalytically active material. An apparatus for metering a reagent into a flowing medium includes a control unit, a device associated with the control unit for detecting a thickness of a reaction zone, and a metering device associated with the control unit for introducing a reagent into a flowing medium upstream of a catalytic converter as seen in flow direction of the medium. The control unit adjusts a quantity of the reagent to be metered into the flowing medium per unit of time by the metering device, as a function of a thickness of the reaction zone.
Claims4
A method for metering a reagent into a flowing medium and for reacting the reagent with an agent contained in the flowing medium to produce a catalytic conversion of the agent, which comprises:
- contacting a flowing medium having an agent with a catalytically active material of a catalytic converter for reacting the agent with a reagent to produce a catalytic conversion of the agent;
- metering the reagent into the flowing medium upstream of the catalytic converter;
- detecting a thickness of a reaction zone in the catalytically active material, the thickness of reaction zone defining a depth of the reagent absorbed in the catalytically active material;
- and
- adjusting a quantity of the reagent to be metered per unit of time into the flowing medium as a function of the thickness of the reaction zone of the catalytically active material.
Dependencies are inferred from the claim text.