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Title: Low exhaust temperature electrically heated particulate matter filter system

Patent ·
OSTI ID:1037007

A system includes a particulate matter (PM) filter, a sensor, a heating element, and a control module. The PM filter includes with an upstream end that receives exhaust gas, a downstream end and multiple zones. The sensor detects a temperature of the exhaust gas. The control module controls current to the heating element to convection heat one of the zones and initiate a regeneration process. The control module selectively increases current to the heating element relative to a reference regeneration current level when the temperature is less than a predetermined temperature.

Research Organization:
GM Global Technology Operations LLC (Detroit, MI)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC04-03AL67635
Assignee:
GM Global Technology Operations LLC (Detroit, MI)
Patent Number(s):
8,112,990
Application Number:
12/174,069
OSTI ID:
1037007
Country of Publication:
United States
Language:
English

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