Method for regenerating an NOx storage catalyst
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United States of America Patent
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May 14, 2002
Issued Date -
N/A
app pub date -
Jan 9, 2001
filing date -
Jul 9, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The time profile of the output signal of an NOx measurement transducer arranged downstream of the NOx storage catalyst is used, during and after the regeneration phase, to derive a criterion as to whether the quantity of regeneration agent to be supplied to the NOx storage catalyst in a regeneration phase must be changed in order to achieve an optimum action of the exhaust-gas purification system. The output signal is picked off at the amperometric NOx measurement transducer at two electrodes. The measurement transducer exhibits the two-position behavior necessary for the method.
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