Electrically regenerated exhaust particulate filter having non-axial regeneration flame propagation
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United States of America Patent
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May 21, 2013
Grant Date -
Nov 5, 2009
app pub date -
Jul 15, 2009
filing date -
Nov 26, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
An exhaust particulate filter for an engine system includes an array of filter cartridges positioned within a shell, each of the cartridges having an electrically powered heating element coupled therewith. Exhaust gases may be distributed among the cartridges according to a single distribution pattern, and the filter can be regenerated without diverting, dividing or bypassing exhaust gases from the filter. The filter cartridges may be cylindrical or wedge-shaped, or of a variety of other configurations. Regeneration may take place according to a non-axial regeneration propagation profile. Other aspects include feedback control and feedforward control of regeneration based on sensing an electrical resistance property of each of the electrically powered heating elements.
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