Method for operating an exhaust system of an internal combustion engine
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United States of America Patent
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Sep 23, 2014
Grant Date -
Sep 6, 2012
app pub date -
Feb 23, 2012
filing date -
Feb 23, 2011
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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.
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