Metallic base material for exhaust purging, and exhaust purging device using same
AssigneeCataler Corporation
InventorsNaoki Yokoyama, Akio Kubota, Nobuaki Bando, Chihiro Kasuya
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Abstract
A perforated metallic base material for purging exhaust is obtained by laminating a wavy foil having pores and a flat foil having pores and forming the same into a cylindrical shape, wherein the wavy foil and/or the flat foil has axially perforated portions having pores throughout the axial direction of the cylindrical shape and axially non-perforated portions not having pores overall in the axial direction of the cylindrical form.
Claims15
A perforated metal substrate for exhaust gas purification in which a corrugated foil having holes and a flat foil having holes are laminated and made into a cylindrical form, wherein
- the corrugated foil and/or the flat foil comprises an axially perforated portion having holes throughout the axial direction of the cylindrical form and an axially non-perforated portion having no holes throughout the axial direction of the cylindrical form,
- a width of the axially non-perforated portion is 2 times or greater than an average diameter of the holes in the substrate, and
- end portions without holes are present at both ends in a circumferential direction of the corrugated foil and/or the flat foil and the end portions do not correspond to the axially non-perforated portion.
Dependencies are inferred from the claim text.