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:
Nov. 01, 2011
Filed:
Nov. 21, 2008
Scott M. Martin, Albion, MI (US);
Stephen M. Thomas, Laingsburg, MI (US);
Alison A. Chambers, Garden City, MI (US);
Theodore J. Tarabulski, Chillicothe, IL (US);
P. Robert Santangeli, Woodbridge, CT (US);
R. Gifford Broderick, Ridgefield, CT (US);
Scott M. Martin, Albion, MI (US);
Stephen M. Thomas, Laingsburg, MI (US);
Alison A. Chambers, Garden City, MI (US);
Theodore J. Tarabulski, Chillicothe, IL (US);
P. Robert Santangeli, Woodbridge, CT (US);
R. Gifford Broderick, Ridgefield, CT (US);
Tenneco Automotive Operating Company Inc., Lake Forest, IL (US);
Abstract
Methods and apparatus for injecting reagent, such as an aqueous urea solution, into an exhaust stream in order to reduce emissions from an engine exhaust. The present teachings can use a whirl plate having a plurality of whirl slots surrounding an exit orifice of an injector, which produce a high velocity rotating flow in the whirl chamber. When the rotating flow of reagent is passed through the exit orifice into an exhaust stream, atomization occurs from a combination of centrifugal force and shearing of the reagent by air as it jets into the exhaust stream.