| US 7,467,749 B2 | ||
| Methods and apparatus for injecting atomized reagent | ||
| Theodore J. Tarabulski, Brewster, N.Y. (US); P. Robert Santangeli, Trumbull, Conn. (US); and R. Gifford Broderick, Ridgefield, Conn. (US) | ||
| Assigned to Tenneco Automotive Operating Company Inc., Lake Forest, Ill. (US) | ||
| Filed on Apr. 22, 2005, as Appl. No. 11/112,039. | ||
| Application 11/112039 is a substitute for application No. 60/565356, filed on Apr. 26, 2004. | ||
| Prior Publication US 2005/0235632 A1, Oct. 27, 2005 | ||
| Int. Cl. F02D 1/06 (2006.01) | ||
| U.S. Cl. 239—5 [239/132.3; 239/132; 239/585.1; 239/533.2] | 39 Claims |
| 38. A method for injecting atomized reagent at low pressure, comprising:
introducing a reagent into a lower section of an injector body;
imparting a rotational velocity to said reagent by circulating said reagent through a conical whirl chamber having a plurality
of whirl slots, said whirl chamber arranged on said lower section of said injector body;
controlling movement of a metering plug arranged within the injector body between closed and open positions;
providing a flow path through the injector body, said flow path comprising a reagent inlet arranged in said lower section
of said injector body, said whirl slots, said whirl chamber, a hollow portion extending through said metering plug, and a
reagent outlet arranged in an upper section of said injector body;
continuously circulating said reagent through said flow path, thereby enabling continuous cooling of said injector in both
the open and closed position of said metering plug;
metering atomized reagent from an exit orifice of the whirl chamber when said metering plug is in said open position.
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