| US 7,461,504 B2 | ||
| Method and system for controlling temperatures of exhaust gases emitted from internal combustion engine to facilitate regeneration of a particulate filter | ||
| Oliver A. Warner, Brighton, Mich. (US); Admir Kreso, Canton, Mich. (US); and Michael A. Balnaves, Canton, Mich. (US) | ||
| Assigned to Detroit Diesel Corporation, Detroit, Mich. (US) | ||
| Filed on Dec. 21, 2004, as Appl. No. 11/18,314. | ||
| Prior Publication US 2006/0130459 A1, Jun. 22, 2006 | ||
| Int. Cl. F01N 3/00 (2006.01) | ||
| U.S. Cl. 60—286 [60/274; 60/295; 60/300; 60/311; 123/90.15] | 1 Claim |
| 1. A method for controlling temperatures of exhaust gases emitted from an internal combustion engine to facilitate regeneration
of particulates captured with a particulate filter, the method comprising:
controlling exhaust gas temperatures by controlling at least one cylinder of the internal combust engine according to the
following four-stroke cycle:
opening and closing the intake valve to induct air during an intake stroke;
opening and closing the exhaust valve near the end of the compression stroke;
opening and closing the intake valve to induct additional air during an expansion stroke; and
delaying opening of the exhaust valve in an exhaust stroke.
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