Variable power distribution for zoned regeneration of an electrically heated particulate filter

Patent · Tue Apr 03 00:00:00 EDT 2012

OSTI ID:1041189

Bhatia, Garima ^[1]; Gonze, Eugene V ^[2]

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1. Bangalore, IN
2. Pinckney, MI

A system includes a particulate matter (PM) filter with multiple zones, an electric heater and a control module. The electrical heater includes heater segments, which each correspond with a respective one of the zones. The electrical heater is arranged upstream from and is proximate with the PM filter. The control module selectively applies a first energy level to a first one of the zones via a first one of the heater segments to initiate regeneration in the first zone. The control module also selectively applies a second energy level that is less than the first energy level to a second one of the zones via a second one of the heater segments to initiate regeneration in the second zone.

• Research Organization: GM Global Technology Operations LLC
• Sponsoring Organization: USDOE
• DOE Contract Number: FC04-03AL67635
• Assignee: GM Global Technology Operations LLC
• Patent Number(s): 8,146,350
• Application Number: 12/146,827
• OSTI ID: 1041189
• Country of Publication: United States
• Language: English

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