| US 7,610,752 B2 | ||
| Devices and methods for reduction of NOx emissions from lean burn engines | ||
| Ralph Albert Dalla Betta, Mountainview, Calif. (US); Joel M. Cizeron, Sunnyvale, Calif. (US); and David R. Sheridan, Menlo Park, Calif. (US) | ||
| Assigned to Eaton Corporation, Cleveland, Ohio (US) | ||
| Filed on Mar. 08, 2007, as Appl. No. 11/715,854. | ||
| Application 11/715854 is a division of application No. 10/715722, filed on Nov. 17, 2003, granted, now 7,181,906. | ||
| Claims priority of provisional application 60/426604, filed on Nov. 15, 2002. | ||
| Prior Publication US 2007/0151232 A1, Jul. 05, 2007 | ||
| Int. Cl. F01N 3/00 (2006.01) | ||
| U.S. Cl. 60—286 [60/274; 60/287; 60/295; 60/301; 60/303; 48/197 R; 48/198.7] | 19 Claims |
| 1. A method of forming reformate from diesel engine fuel in a diesel engine exhaust stream, comprising:
channeling a lean exhaust flow from the engine through a fuel processor, the fuel processor comprising a main chamber and
a fuel reforming catalyst within the main chamber;
dividing the lean exhaust flow within the main chamber between a first flow path through the catalyst, or a portion thereof,
and a second flow within the main chamber that bypasses the first flow path, with the split ratio of the division between
the two flow paths being unregulated or regulated only by fixed means;
injecting the diesel fuel into the first flow path to form an overall rich composition within the first flow path while maintaining
a lean composition in the bypass flow;
reforming a portion of the injected fuel to form H2 and CO within the first flow path; and
causing the the divided exhaust flow to recombine.
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