Abstract: A honeycomb body for an exhaust-gas purification system may be used, for example, as a carrier body for catalytically acting coatings or as a filter, absorber or mixer in the exhaust system of an internal combustion engine. The honeycomb body has channels, an axial main direction, a planar front surface, a planar end surface and a circumferential surface disposed parallel to the axial main direction. The front surface and/or the end surface are disposed obliquely with respect to the axial main direction. Such a honeycomb body is advantageous, in particular, for applying reducing agent to the oblique end or front surface. A method for producing a honeycomb body, an exhaust line section and a motor vehicle are also provided.

Abstract: A hollow body for capturing particles includes at least one at least partially permeable wall extending between two at least partially oppositely disposed openings and along a first longitudinal direction. The hollow body has a primary cross-sectional shape defining a first cross-sectional area. At least one of the openings defines a second cross-sectional area. The second cross-sectional area is greater than the first cross-sectional area. An exhaust-gas treatment device having an exhaust line and a motor vehicle having an exhaust-gas treatment device are also provided.

Abstract: A nonwoven fabric for exhaust-gas treatment includes a multiplicity of metallic filaments having at least two types of different contours of the metallic filaments. An exhaust-gas purification device includes a channel structure through which exhaust gas can at least partially flow. The channel structure is made at least partially with such a nonwoven fabric. A method for producing a nonwoven fabric for exhaust-gas treatment is also provided.

Abstract: A method for brazing a metallic honeycomb body (1) for exhaust gas treatment, includes at least: a) pretreatment of a honeycomb body (1) at a temperature above 400° C.; b) cooling the honeycomb body (1); c) brazing the honeycomb body (1) at a temperature in a range of from 1050° C. to 1100° C. under atmospheric pressure; and d) cooling the honeycomb body (1). A suitable apparatus for carrying out the method is also provided.

Abstract: A hollow body for capturing particles includes at least one at least partially permeable wall extending between two at least partially oppositely disposed openings and along a first longitudinal direction. The hollow body has a primary cross-sectional shape defining a first cross-sectional area. At least one of the openings defines a second cross-sectional area. The second cross-sectional area is greater than the first cross-sectional area. An exhaust-gas treatment device having an exhaust line and a motor vehicle having an exhaust-gas treatment device are also provided.

Abstract: A honeycomb body for an exhaust-gas purification system may be used, for example, as a carrier body for catalytically acting coatings or as a filter, absorber or mixer in the exhaust system of an internal combustion engine. The honeycomb body has channels, an axial main direction, a planar front surface, a planar end surface and a circumferential surface disposed parallel to the axial main direction. The front surface and/or the end surface are disposed obliquely with respect to the axial main direction. Such a honeycomb body is advantageous, in particular, for applying reducing agent to the oblique end or front surface. A method for producing a honeycomb body, an exhaust line section and a motor vehicle are also provided.

Abstract: A method for brazing a metallic honeycomb body (1) for exhaust gas treatment, includes at least: a) pretreatment of a honeycomb body (1) at a temperature above 400° C.; b) cooling the honeycomb body (1); c) brazing the honeycomb body (1) at a temperature in a range of from 1050° C. to 1100° C. under atmospheric pressure; and d) cooling the honeycomb body (1). A suitable apparatus for carrying out the method is also provided.

Abstract: A nonwoven fabric for exhaust-gas treatment includes a multiplicity of metallic filaments having at least two types of different contours of the metallic filaments. An exhaust-gas purification device includes a channel structure through which exhaust gas can at least partially flow. The channel structure is made at least partially with such a nonwoven fabric. A method for producing a nonwoven fabric for exhaust-gas treatment is also provided.

Abstract: A particle trap disposed between an exhaust gas line and an exhaust gas recirculation line includes at least one partially permeable hollow body separating the exhaust gas recirculation line from the exhaust gas line. The at least one partially permeable hollow body has a wall defining a primary shape with an inner space having at least one open side. The wall is gas-permeable and has a secondary structure with elevations and depressions. An automobile having a particle trap is also provided.

Abstract: An exhaust-gas treatment unit includes at least one housing and a honeycomb structure having channels running between end faces of the honeycomb structure and being formed by at least partially structured metal foils having a material thickness of at most 50 ?m. At least part of the metal foils is constructed with a fold of a predefined width at least in the region of an end face, and the metal foil is welded to itself at a weld seam in the region of this fold. A method for producing such an exhaust-gas treatment unit using a suitable welding process is also provided.

Abstract: A device for cleaning exhaust gas from an internal combustion engine, especially a diesel engine, includes at least one catalyst carrier body through which an exhaust gas can flow. The catalyst carrier body is disposed in a casing tube and has a honeycomb-shaped structure. An electrical heating element has a supply terminal at each end and a twisted current path over an electrically insulating gap in the heating element. The heating element is a honeycomb body which is fixed to the catalyst carrier body by electrically insulating support elements and which is located downstream of the catalyst carrier body in exhaust gas flow direction. A honeycomb body, especially a particle filter, situated downstream, may be heated particularly effectively and a temperature required there may be reached and/or maintained, especially for igniting soot that has collected.

Abstract: A device for cleaning exhaust gas from an internal combustion engine, especially a diesel engine, includes at least one catalyst carrier body through which an exhaust gas can flow. The catalyst carrier body is disposed in a casing tube and has a honeycomb-shaped structure. An electrical heating element has a supply terminal at each end and a twisted current path over an electrically insulating gap in the heating element. The heating element is a honeycomb body which is fixed to the catalyst carrier body by electrically insulating support elements and which is located downstream of the catalyst carrier body in exhaust gas flow direction. A honeycomb body, especially a particle filter, situated downstream, may be heated particularly effectively and a temperature required there may be reached and/or maintained, especially for igniting soot that has collected.