Method for modifying trigger level for adsorber regeneration
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United States of America Patent
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May 25, 2010
Grant Date -
Oct 18, 2007
app pub date -
Dec 8, 2006
filing date -
Jun 8, 2004
priority date (Note) -
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Abstract
adsorber regeneration triggering variable. Engine operating conditions are monitored until the regeneration triggering variable is met. The adsorber is regenerated and the adsorbtion efficiency of the adsorber is subsequently determined. The regeneration triggering variable is modified to correspond with the decline in adsorber efficiency. The adsorber efficiency may be determined using an empirically predetermined set of values or by using a pair of oxygen sensors to determine the oxygen response delay across the sensors.
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