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U.S. Department of Energy
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Electrically heated particulate filter with zoned exhaust flow control

Patent ·
OSTI ID:1055451

A system includes a particulate matter (PM) filter that includes X zones. An electrical heater includes Y heater segments that are associated with respective ones of the X zones. The electrical heater is arranged upstream from and proximate with the PM filter. A valve assembly includes Z sections that are associated with respective ones of the X zones. A control module adjusts flow through each of the Z sections during regeneration of the PM filter via control of the valve assembly. X, Y and Z are integers.

Research Organization:
GM Global Technology Operations LLC
Sponsoring Organization:
USDOE
DOE Contract Number:
FC04-03AL67635
Assignee:
GM Global Technology Operations LLC
Patent Number(s):
8,205,439
Application Number:
12/358,709
OSTI ID:
1055451
Country of Publication:
United States
Language:
English