Patent ID: 6722124
Filing Date: 2004-04-20
Classification: B01D,B01F,F01N,Y02A,Y02T

Abstract:
A catalytic converter assembly comprising:a housing having an exhaust gas inlet and an exhaust gas outlet, an exhaust gas low path being defined through the housing from said inlet to said outlet; a first chamber enclosed by the housing receiving incoming exhaust gas; a second chamber enclosed by the housing downstream of and immediately adjacent said first chamber and containing a catalyst bed; an exhaust gas passage from said first chamber to said second chamber; a perforated tubular enclosure surrounding said passage within said first chamber to induce a region of turbulence in the exhaust gas flow within said enclosure immediately upstream of said passage; said tubular enclosure having a further portion extending through said passage and into said second chamber; an injector extending into said enclosure for injecting a reducing agent into said region of turbulence; whereby the reducing agent is rapidly dispersed and mixed within the exhaust gas flow before reaching the catalyst bed.