Exhaust gas processing device

摘要

An exhaust gas processing device includes a honeycomb structure in a pillar shape including a honeycomb unit, a catalytic agent, an inorganic mat member, a cylindrical metallic member and an insulating layer. The honeycomb unit includes cell walls to define a plurality of cells which extend from a first end of the honeycomb unit to a second end of the honeycomb unit along a longitudinal direction. The catalytic agent is provided on the cell walls. The inorganic mat member is wound around an outer peripheral surface of the honeycomb structure. The cylindrical metallic member accommodates the honeycomb structure around which the inorganic mat member is wound. The insulating layer has a thickness of about 20 μm to about 400 μm and is densely formed. The insulating layer is provided between an inner surface of the cylindrical metallic member and the inorganic mat member.

主权项

1. An exhaust gas processing device comprising:
a honeycomb structure in a pillar shape including a honeycomb unit, the honeycomb unit including cell walls extending along a longitudinal direction of the honeycomb unit to define a plurality of cells which extend from a first end of the honeycomb unit to a second end of the honeycomb unit along the longitudinal direction; a catalytic agent provided on the cell walls; an inorganic mat member wound around an outer peripheral surface of the honeycomb structure; a cylindrical metallic member accommodating the honeycomb structure around which the inorganic mat member is wound; and an insulating layer having a thickness of about 20 μm to about 400 μm and densely formed such that no through pores exist in a thickness direction of the insulating layer, the insulating layer being provided between an inner surface of the cylindrical metallic member and the inorganic mat member, and electrically insulating between the honeycomb structure and the cylindrical metallic member.