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NOx control for IC engines

  • US 20090004083A1
  • Filed: 06/17/2005
  • Published: 01/01/2009
  • Est. Priority Date: 12/17/2003
  • Status: Abandoned Application
First Claim
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1. A method for reducing the NOx content of combustion exhaust comprising:

  • passing combustion gases through a multi-zone NOx reduction catalytic treatment system, wherein reagent for NOx reduction is introduced by means provided at least one point upstream of each catalyst zone.

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