Abstract: A method for manufacturing an exhaust gas treatment device for an internal combustion engine comprises axially inserting an exhaust gas treatment cartridge into a casing, wherein the casing has an initial inside cross-section that is larger than an outside cross-section of the exhaust gas treatment cartridge. A funnel is axially inserted into an end region of the casing, wherein an outside cross-section of the funnel is smaller than the initial inside cross-section of the casing. The cross-section of the casing is subsequently reduced such that the casing ultimately has a first ultimate inside cross-section that is equal to the outside cross-section of the exhaust gas treatment cartridge in a region, in which the at least one exhaust gas treatment cartridge is arranged, and a second ultimate inside cross-section that is equal to the outside cross-section of the funnel in the respective end region, in which the respective funnel is arranged.

Abstract: The present invention relates to a method for installing a probe (6) on an exhaust gas treatment device (1), which has at least one ceramic insert (3) secured in a metallic housing (2) by means of a bearing mat, with which a receptacle opening (7) for receiving the probe (6), penetrating through the housing (2) and the bearing mat (5) and into the insert is created when the insert (3) has already been inserted into the housing (2) and secured there with the bearing mat (5).

Abstract: A process is provided for manufacturing an exhaust gas treatment device (2), which has an exhaust gas treatment insert (4), which is clamped in a housing (8) by at least one mounting mat (6) enveloping the insert (4). An individual geometry of the housing (8), which geometry is individually adapted to the particular insert (4) and to the particular mounting mat (6), is determined as a function of the weight of the particular insert (4) and of the particular mounting mat (6). The housing (8), the particular insert (4) and the particular mounting mat (6) are mounted as a function of the individual geometry determined. The quality of manufacture can be improved if the geometry is determined such that a predetermined clamping force is present in the mounted state and if the weight of the particular mounting mat (6) is determined separately and is taken into account separately in the determination of the geometry.

Abstract: A method for manufacturing an exhaust gas treatment device for an internal combustion engine comprises axially inserting an exhaust gas treatment cartridge into a casing, wherein the casing has an initial inside cross-section that is larger than an outside cross-section of the exhaust gas treatment cartridge. A funnel is axially inserted into an end region of the casing, wherein an outside cross-section of the funnel is smaller than the initial inside cross-section of the casing. The cross-section of the casing is subsequently reduced such that the casing ultimately has a first ultimate inside cross-section that is equal to the outside cross-section of the exhaust gas treatment cartridge in a region, in which the at least one exhaust gas treatment cartridge is arranged, and a second ultimate inside cross-section that is equal to the outside cross-section of the funnel in the respective end region, in which the respective funnel is arranged.