| US 7,500,358 B2 | ||
| Apparatus, system, and method for enhancing soot filter protection | ||
| Nishant Singh, Columbus, Ind. (US); and Daniel D. Wilhelm, Nashville, Ind. (US) | ||
| Assigned to Fleetguard, Inc, Nashville, Tenn. (US) | ||
| Filed on Aug. 11, 2006, as Appl. No. 11/464,141. | ||
| Prior Publication US 2008/0034738 A1, Feb. 14, 2008 | ||
| Int. Cl. F01N 3/00 (2006.01) | ||
| U.S. Cl. 60—295 [60/276; 60/285; 60/286; 60/297; 60/301] | 26 Claims |
| 1. An apparatus for enhancing soot filter protection, the apparatus comprising:
an operating detection module configured to detect an operating condition of an internal combustion engine, the detected operating
condition being associated with a soot generation rate generated by the internal combustion engine, and set an engine operating
indicator if the detected operating condition is above a threshold value associated with a threshold soot generation rate;
a regeneration-start timing module configured to increment a first counter based on the engine operating indicator, and to
set a regeneration request indicator when the first counter reaches a first threshold;
a regeneration-stop timing module configured to increment a second counter based on the set regeneration request indicator,
and to reset the regeneration request indicator when the second counter reaches a second threshold; and
a regeneration request module configured to request a regeneration event based on the regeneration request indicator.
|