Patent ID: 6540816
Filing Date: 2003-04-01
Classification: F01N,Y10S,Y10T

Abstract:
An exhaust aftertreatment filter for filtering engine exhaust flowing along an axial direction, said filter being composed of filter media regenerable by heat to burn-off contaminant particulate collected from said engine exhaust, comprising a filter roll extending axially along an axis and having a plurality of concentric layers with pleats therebetween defined by wall segments extending in zig-zag manner between pleat tips at axially extending bend lines, a conductor, selected from the group consisting of electrical conductors and thermal conductors, at a given axial location along said filter roll and providing localized heating at said location, wherein said filter media comprises a first sheet and a second sheet, said second sheet having a plurality of said pleats, said conductor extending laterally along one of said sheets, wherein said sheets and said conductor are wound in a spiral to provide said filter roll, said sheets are wound from a starting side to a terminating side, and wherein said conductor extends from said starting side, and said conductor extends to said terminating side.