Regenerable filter with localized and efficient heating
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United States of America Patent
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-
Apr 1, 2003
Grant Date -
Feb 27, 2003
app pub date -
Aug 23, 2001
filing date -
Aug 23, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An exhaust aftertreatment filter is provided with localized and efficient heating for regeneration. Electrical and/or thermal conductors are wound with filter media sheets into a filter roll and/or conductors are provided at axial ends of the filter roll and/or microwave radiation is used for localized hot zone heating. Regeneration is provided at lateral slices of the filter roll lying in a plane extending transversely and radially relative to the filter roll axis.
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