Method of controlling NOx purification system and NOx purification system
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United States of America Patent
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Feb 7, 2012
Grant Date -
May 13, 2010
app pub date -
Apr 16, 2008
filing date -
May 16, 2007
priority date (Note) -
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Abstract
under the NOx regeneration control. Accordingly, the sulfur poisoning amount is accurately estimated and by performing the sulfur poisoning regeneration at an appropriate frequency, any excessive sulfur poisoning regeneration can be avoided, thereby preventing deterioration of mileage.
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