Patent ID: 8083839

Claim:
A system comprising: a particulate matter (PM) filter that 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 louver that comprises N zones and M sub-zones corresponding to said N zones and M sub-zones of said radiant zoned heater, wherein said radiant zoned heater is located between said louver and said PM filter; and 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 and deactivates non-selected ones of said N zones, wherein selectively activating said selected one of said N zones closes a corresponding one of said N zones of said louver to i) restrict exhaust gas flow through said corresponding one of said N zones and ii) arrange a reflective surface of said corresponding one of said N zones to reflect radiant light from said radiant zoned heater toward said upstream end of said PM filter.