The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 20, 2004
Filed:
Feb. 27, 2002
Applicant:
Inventors:
Z. Gerald Liu, Madison, WI (US);
Michael T. Zuroski, Sun Prairie, WI (US);
Cary D. Bremigan, Madison, WI (US);
Kenneth J. Kicinski, Sun Prairie, WI (US);
C. Raymond Cheng, Madison, WI (US);
Assignee:
Fleetguard, Inc., Nashville, TN (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01N 3/00 ;
U.S. Cl.
CPC ...
F01N 3/00 ;
Abstract
An exhaust aftertreatment device ( ) includes an aftertreatment element ( ) for treating internal combustion engine exhaust, an injector ( ) for injecting chemical species mixing with the exhaust prior to reaching the aftertreatment element, and a turbulator ( ) turbulating the exhaust to enhance the noted mixing. In a desired combination, a two-stage integrated perforated tube combination structure includes a turbulent mixing tube ( ) disposed in an acoustic tube ( ) and concentrically surrounded thereby.