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Title: Elevated exhaust temperature, zoned, electrically-heated particulate matter filter

Patent ·
OSTI ID:1040872

A system includes an electrical heater and a particulate matter (PM) filter that is arranged one of adjacent to and in contact with the electrical heater. A control module selectively increases an exhaust gas temperature of an engine to a first temperature and that initiates regeneration of the PM filter using the electrical heater while the exhaust gas temperature is above the first temperature. The first temperature is greater than a maximum exhaust gas temperature at the PM filter during non-regeneration operation and is less than an oxidation temperature of the PM.

Research Organization:
GM Global Technology Operations LLC
Sponsoring Organization:
USDOE
DOE Contract Number:
FC04-03AL67635
Assignee:
GM Global Technology Operations LLC
Patent Number(s):
8,156,737
Application Number:
US patent applicaiton 11/941,545
OSTI ID:
1040872
Country of Publication:
United States
Language:
English