A nonwoven article comprising a two-dimensional nonwoven structure or a three-dimensional nonwoven structure comprising a plurality of discontinuous polycrystalline, aluminosilicate ceramic fibers that are cohesively bonded together by a fired precursor inorganic binder, wherein each cohesively bonded discontinuous fiber is bonded to one or a plurality of other said discontinuous fibers at one or more locations along its length.

A nonwoven article comprising a two-dimensional nonwoven structure having a longest major surface dimension and a shortest major surface dimension, said two-dimensional nonwoven structure comprising a plurality of discontinuous polycrystalline, aluminosilicate ceramic fibers having a length equal to the longest or shortest major surface dimension of the two-dimensional nonwoven structure or a length in between those dimensions.

A pillar shaped honeycomb structure includes: a porous partition wall that defines a plurality of cells, the cells forming flow paths for a fluid, the cells extending from an inflow end face to an outflow end face; and an outer peripheral wall located at the outermost circumference. At least a part of surfaces of the partition walls has a surface layer, and the surface layer includes magnetic particles and has permeability.

A clamping assembly configured for an exhaust system of a vehicle may include a gasket engaged to be prevented from deviating using a method in which a pin is inserted into and engaged with a pin hole at an inlet pipe flange of a catalytic converter, wherein an outlet pipe flange of a turbocharger and an inlet pipe flange of the catalytic converter are clamped by a clamp by interposing the gasket between the outlet pipe flange of the turbocharger and the inlet pipe flange of the catalytic converter.

A sheathing arrangement for an exhaust system of an internal combustion engine includes at least one sheathing element (18) with a sheathing element shell (19). On an inner side (30) of the sheathing element shell (19) insulation material (38) overlaps the inner side (30) in at least some areas. The inner side is to be positioned facing toward a component of an exhaust system (10), which component is to be sheathed. The insulation material (38) is fixed to the sheathing element shell (19) by means of at least one fastening element (40) passing through the sheathing element shell (19) and the insulation material (38).

An exhaust gas control apparatus includes: a honeycomb substrate including an inflow cell and an outflow cell adjacent to each other with a partition wall sandwiched between the inflow cell and the outflow cell; a first sealing part provided at an outflow side end of the inflow cell, and a second sealing part provided at an inflow side end of the outflow cell; and a catalyst layer provided on the partition wall, and at least one of the first sealing part and the second sealing part is an OSC material-containing sealing part containing an OSC material and a sealant, and a concentration of the OSC material in the OSC material-containing sealing part is uniform in an extending direction.

A purification component comprises at least one block for purifying exhaust gases, and a casing that defines a circulation channel for the exhaust gases extending along a longitudinal axis, and in which the purification block is housed. The casing comprises an inlet portion, an outlet portion, and a central portion arranged between the inlet portion and the outlet portion, and with the central portion surrounding the purification block. A thermal insulator covers the whole of the casing. The thermal insulator comprise a first part, having a first temperature resistance, arranged radially facing the purification block, and a second part, having a second temperature resistance greater than the first temperature resistance, covering at least the inlet portion of the casing.

A method of manufacturing an insulator is provided. The insulator includes a lower member and an upper member. The lower member is placed as a second flange of the lower member is fixed in position. The upper member is then disposed on the lower member as the second flange of the upper member is fixed in position. Accordingly, the first flange of the upper member and the first flange of the lower member abut each other, and the second flange of the upper member and the second flange of the lower member abut each other. Then, the first flange of the upper member and the first flange of the lower member are swaged, and then the second flange of the upper member and the second flange of the lower member are swaged.

An apparatus includes a housing and at least one substrate enclosed within the housing and extending along an axis. The substrate includes at least one internal open area that is of a predetermined size and at a predetermined location within the substrate. At least one heater is configured to heat the at least one substrate by directing heat into the at least one internal open area.

A molded three-dimensional insulator that is suitable for use in an end cone region of a pollution control device and a method of making the insulator are described. The insulator includes ceramic fibers that have a bulk shrinkage no greater than 10 weight percent. The ceramic fibers can contain alumina and silica and can be microcrystalline, crystalline, or a combination thereof.