Radiant Zone Heated Particulate Filter
AssigneeGM Global Technology Operations LLC
InventorsEugene V. Gonze, Michael J. Paratore, JR.
Life of this patent
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Abstract
A system includes a particulate matter (PM) filter including an upstream end for receiving exhaust gas and a downstream end. A radiant zoned heater includes N zones, where N is an integer greater than one, wherein each of the N zones includes M sub-zones, where M is an integer greater than or equal to one. A control module selectively activates at least a selected one of the N zones to initiate regeneration in downstream portions of the PM filter from the one of the N zones, restricts exhaust gas flow in a portion of the PM filter that corresponds to the selected one of the N zones, and deactivates non-selected ones of the N zones.
Claims24
A system comprising:
- a particulate matter (PM) filter comprises an upstream end for receiving exhaust gas and a downstream end;
- a radiant zoned heater that comprises N zones, where N is an integer greater than one, wherein each of said N zones comprises M sub-zones, where M is an integer greater than or equal to one;
- a control module that selectively activates at least a selected one of said N zones to initiate regeneration in downstream portions of said PM filter from said one of said N zones, restricts exhaust gas flow in a portion of said PM filter that corresponds to said selected one of said N zones, and deactivates non-selected ones of said N zones.
A method comprising:
- providing a particulate matter (PM) filter comprises an upstream end for receiving exhaust gas and a downstream end;
- arranging a radiant zoned heater that comprises N zones, where N is an integer greater than one, wherein each of said N zones comprises M sub-zones, and where M is an integer greater than or equal to one;
- selectively activating at least a selected one of said N zones to initiate regeneration in downstream portions of said PM filter from said one of said N zones;
- restricting exhaust gas flow in a portion of said PM filter that corresponds to said selected one of said N zones;
- and
- deactivating non-selected ones of said N zones.
Dependencies are inferred from the claim text.