Abstract: A tube for an exhaust system includes an add-on part that is firmly connected with the tube by a brazing seam.

Abstract: A machine tool for manufacturing exhaust gas cleaning devices, in particular diesel particulate filters and catalysts that have a housing and a gas-traversed insert clamped in the housing, comprises at least one tool, in which the insert is clamped in the housing. A heating device that heats the housing is integrated in the tool. In a method for manufacturing exhaust gas cleaning devices, the heated housing is plastically deformed in a machine tool, and the insert is inserted into the housing.

Abstract: An exhaust gas carrying of an exhaust gas system of a combustion engine fulfills a sound-absorbing function and has an outer shell that comprises at least one sound-absorbing portion. The sound-absorbing portion is provided with micro perforations which have a sound-absorbing effect and through which exhaust gas is directly discharged to an external environment.

Abstract: A static mixing element, in particular for arrangement in an exhaust system of an internal combustion engine, has a grid-like component having a flow therethrough. The grid-like component is formed in one piece from an elongated metal strip. In the production of the static mixing element, the metal strip is bent to form the grid-like component.

Abstract: A housing for a component of an exhaust system, in particular for an exhaust gas purification device, has an envelope that comprises a shrunk clamping portion for the component, a transition portion that adjoins the clamping portion in an axial direction, and a connecting portion that adjoins the transition portion in the axial direction. The diameter of the connecting portion is larger than that of the clamping portion. A method of producing the housing for the component includes providing a tubular envelope, and inserting the component into the envelope. A shrinking step is then carried out in the clamping portion which terminates spaced apart from ends of the envelope as viewed in the axial direction, whereas the axial ends of the envelope are not acted upon.

Abstract: In a method of fabricating an exhaust gas handling device, particularly an automotive emission control device, an insert, for example comprising a substrate and a support matting, is sensed as to its specific elasticity before it is clamped in place in an outer housing. For sensing, the insert is pressurized from without in a sensing station. Via the applied pressure and the displacement of the sensing tool the displacement of the insert at which it is to be clamped in place in the outer housing is determined. Then, the insert is fitted in an outer housing the inner dimensions of which correspond to the previously sensed wanted outer dimensions of the insert in the wanted compression.

Abstract: A static mixing element, in particular for arrangement in an exhaust system of an internal combustion engine, has a grid-like component having a flow therethrough. The grid-like component is formed in one piece from an elongated metal strip. In the production of the static mixing element, the metal strip is bent to form the grid-like component.

Abstract: A housing for a component of an exhaust system has an opening which is provided in the housing, and a pipe which is arranged in the opening and connected with the housing. The pipe projects out of the housing and is connected with a connecting pipe shortly behind the opening. The invention further relates to such a component.

Abstract: A bracket for a component of an exhaust-gas system includes a fastening portion which serves for being fastened to a motor, and at least one connection portion which serves for a connection with the component, is characterized in that a reinforcing element is arranged on the fastening portion.

Abstract: An assembly for mixing a medium with an exhaust gas flow of a motor vehicle exhaust system has a first exhaust pipe and a second exhaust pipe. The first exhaust pipe comprises a device for introducing the medium and opens axially into a connecting member that is widened with respect to the first exhaust pipe. The second exhaust pipe opens laterally into the connecting member. The connecting member is configured to impart an angular momentum to the exhaust gas flow.

Abstract: An air-gap insulated vehicle exhaust duct has an outer pipe and an inner pipe, between which an air gap is formed. One of the two pipes has a flange fitted thereto, a seal being arranged between the flange and the other pipe, the seal largely sealing the air gap against the outside and, in addition, allowing relative axial and radial movement between the flange and the other pipe when thermal expansion occurs while driving.

Abstract: A vehicle muffler, which is structured in a coiled fashion, has a tube extending through the circumferential wall. This tube is welded to the circumferential wall and fastened by mechanical deformation to a support wall of an inner insert piece.