Method for operating an exhaust system of an internal combustion engine
AssigneeRobert Bosch GmbH
InventorsStefan Scherer, Markus Gloeckle, Tobias Pfister
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Abstract
A method for operating an exhaust system of an internal combustion engine, wherein nitrogen oxide (NOx) is reduced by use of a SCR catalytic converter and wherein the ageing state of the SCR catalytic converter is monitored, characterized in that during a temporally limited phase having a high proportion of nitrogen oxide (NOx) in the exhaust gas, a conversion of said SCR catalytic converter is acquired and evaluated and the ageing state of said SCR catalytic converter is suggested therefrom.
Claims12
A method for operating an exhaust system (10) of an internal combustion engine (12), the method comprising reducing nitrogen oxide (NOx) by the use of a SCR catalytic converter (32), and monitoring an ageing state of the SCR catalytic converter (32), wherein, during a temporally limited phase having a high proportion of nitrogen oxide (NOx) in an exhaust gas, a conversion of the SCR catalytic converter (32) is acquired and evaluated and the ageing state of said SCR catalytic converter (32) is suggested therefrom.
Dependencies are inferred from the claim text.