Flow-through honeycomb substrate and exhaust after treatment...

Details Flow-through honeycomb substrate and exhaust after treatment... Flow-through honeycomb substrate and exhaust after treatment...

2006-11-15

2009-02-17

Vanoy, Timothy C (Department: 1793)

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Mixture is exhaust from internal-combustion engine

C423S213700, C423S215500, C060S274000, C060S282000, C060S295000, C060S299000, C060S302000, C502S001000, C502S100000, C502S300000, C502S518000, C502S527190, C055SDIG030, C095S273000, C095S285000, C422S168000, C422S180000, C428S116000, C428S117000

Reexamination Certificate

active

07491373

ABSTRACT:
A system and method including a radially non-uniformly plugged flow-through honeycomb substrate positioned upstream of a wall-flow particulate filter for controlled thermal regeneration of the wall-flow particulate filter, the flow-through honeycomb substrate having a flow-through region including a first portion of parallel channels and a flow-control region including a second portion of parallel channels, the first portion of the parallel channels including unplugged channels and the second portion of the parallel channels including plugged channels, with the flow-control region adjusting flow distribution through the flow-through honeycomb substrate.

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