Abstract: The invention relates to an exhaust gas after-treatment device for an internal combustion engine, including a housing into which an exhaust pipe that opens into a mixing chamber penetrates. The mixing chamber is shaped as a pot and reverses a direction of flow of the incoming exhaust gas whereby it returns the exhaust gas radially outside of the exhaust pipe. An open end of the pot-shaped mixing chamber opens into a collecting space which is designed so that it supplies the exhaust gas to at least one downstream SCR catalytic converter.

Abstract: The present invention relates to an exhaust system for an internal combustion engine, in particular in a motor vehicle, having an SCR module containing at least one SCR catalyst element in an SCR housing connected to an exhaust line and having a PF module containing at least one particulate filter element in a PF housing connected to the exhaust line upstream from the SCR housing.

Abstract: The invention relates to an exhaust gas after-treatment device for an internal combustion engine, including a housing into which an exhaust pipe that opens into a mixing chamber penetrates. The mixing chamber is shaped as a pot and reverses a direction of flow of the incoming exhaust gas whereby it returns the exhaust gas radially outside of the exhaust pipe. An open end of the pot-shaped mixing chamber opens into a collecting space which is designed so that it supplies the exhaust gas to at least one downstream SCR catalytic converter.

Abstract: A multibed catalyzer (1) is for an exhaust system of a combustion engine, of a motor vehicle. In a housing (2), at least two catalytic monoliths (3, 4) are arranged axially adjacent to be flowed-through in succession. The two monoliths (3, 4) are encased on the circumferential side by a common heat-resistance bearing mat (5) and supported by means of this bearing mat (5) in the housing (2). In order to enable a predetermined axial minimal distance between the two monoliths (3, 4), at least two heat-resistant distancing elements (9) are distributed circumferentially and axially between the two monoliths (3, 4), so that the monoliths are axially supported on one another by means of the distancing elements (9).

Abstract: The present invention relates to an exhaust system for an internal combustion engine, in particular in a motor vehicle, having an SCR module containing at least one SCR catalyst element in an SCR housing connected to an exhaust line and having a PF module containing at least one particulate filter element in a PF housing connected to the exhaust line upstream from the SCR housing.

Abstract: A muffler has an integrated SCR catalytic converter for an exhaust line of an internal combustion engine, in particular in a motor vehicle The muffler includes a housing which has an intake trumpet on the intake end and an exhaust pipe on the output end. Catalytic converter elements are arranged in the housing with one inlet end in an inlet chamber and with an outlet end in an outlet chamber. An outlet end of the intake trumpet communicates with the inlet chamber. To improve the efficiency of the SCR catalytic converter the inlet chamber is sealed off from the outside and with respect to the intake trumpet and the catalytic converter elements to the extent that in operation of the internal combustion engine with exhaust gas loaded with urea, passing through the intake trumpet into the inlet chamber, the exhaust gas leaves the inlet chamber only through the catalytic converter elements.

Abstract: An exhaust gas muffler of multi-chamber construction includes an outer housing having an upper and lower half shell, an inner shell, and an inner exhaust gas duct through the exhaust gas muffler. The inner exhaust gas duct has at lease one curved outlet pipe that has a first curved section and a straight outlet end runs flush with the outer housing. The invention also covers a method for the production of the multi-chamber exhaust gas muffler.

Abstract: A special bearing mat (4) is used for mounting and insulating ceramic monoliths (1, 2) in a preferably oval housing (3) of an automobile exhaust system (20), especially for non-round housing cross sections. The bearing mat (4) and/or said housing is/are specially structured and/or chemically treated, especially impregnated at the points which are at risk of eroding (A) in order to increase resistance to erosion. The bearing mat (4) is adapted to suit the functioning of the exhaust system (20) during operation and is especially configured with several layers.

Abstract: An exhaust gas system for an internal combustion engine, in particular, of a motor vehicle has two mufflers through which the exhaust gas is able to flow in a parallel fashion. A switching unit makes it possible to selectively convey the exhaust gas flow of the internal combustion engine only or almost exclusively through the first muffler, or only or almost exclusively through the second muffler, or through both mufflers in a parallel fashion. The two mufflers are realized differently with respect to their muffling effect and/or flow resistance.

Abstract: An exhaust gas cooler for an internal combustion engine, preferably in a motor vehicle, includes a housing through which exhaust gas can flow in the longitudinal direction and in which a partition extends in the longitudinal direction and separates a first chamber from a second chamber. An inlet communicates in the housing with a first chamber and through which the exhaust gas flows into the housing. An outlet communicates in the housing at least with the second chamber and via which the exhaust gas flows out of the housing. The partition has at least one overflow opening through which the first chamber communicates with the second chamber.

Abstract: An exhaust cleaning system for motor vehicles, especially a diesel exhaust cleaning system for medium to heavy utility vehicles. The exhaust cleaning system has an exhaust muffler (1), a catalytic converter (2) and an exhaust particle filter element (3). The exhaust muffler (1), the catalytic converter (2) with a U-shaped tubular urea injection element (4) arranged upstream and an exhaust particle filter element (3) are integrated in a common housing and designed as a structural, functional unit.

Abstract: A fiber mat is configured such that the fibers 2 of an intermediate layer arranged between two adjacent layers touch the fibers of one of the layers at positions situated at a distance from the contact points with the fibers of the other layer. The positioning and the material of the fibers is designed to have a high elasticity with regard to pressing.

Abstract: An exhaust cleaning system for motor vehicles, especially a diesel exhaust cleaning system for medium to heavy utility vehicles. The exhaust cleaning system has an exhaust muffler (1), a catalytic converter (2) and an exhaust particle filter element (3). The exhaust muffler (1), the catalytic converter (2) with a U-shaped tubular urea injection element (4) arranged upstream and an exhaust particle filter element (3) are integrated in a common housing and designed as a structural, functional unit.

Abstract: An exhaust cleaning system for motor vehicles, especially a diesel exhaust cleaning system for medium to heavy utility vehicles. The exhaust cleaning system has an exhaust muffler (1), a catalytic converter (2) and an exhaust particle filter element (3). The exhaust muffler (1), the catalytic converter (2) with a U-shaped tubular urea injection element (4) arranged upstream and an exhaust particle filter element (3) are integrated in a common housing and designed as a structural, functional unit.

Abstract: An exhaust gas cleaning device for diesel engines has an exhaust gas soot filter (2) with a filter body (6) that is supported in a housing (4) and is regenerated by combustion of the soot when its temperature rises above the middle operating exhaust gas temperature range. A burner (26) is provided, having a combustion air fan (28) whose hot gas side is in flow communication with the exhaust gas soot filter (2), and the filter body (6) is supported in its housing in such a manner that at least a large part of its outer surface is heated externally during operation of the burner (26).

Abstract: To prevent the formation of scratches, surface discontinuities, slide tracks or striations, for example due to sliding of electrodes (20) over the metal layer (12) of a metalized recording medium, a protective surface coating (13) of low-friction sliding protective material is applied in the form of discontinuous islands over the metal layer (12). The discontinuities permit electrical contact between the electrode (20) and the metal layer (12) although the protective surface coating (13) has insulating properties. The coating (13) may be polymerized hexamethyl-disiloxane, hexafluoropropylene, or Teflon, polymerized, preferably in a hot cathode glow discharge; or a metallic soap. The protective layer is hydrophobic in the form of islands of a thickness of between 10.sup.-9 m to 10.sup.-7 m, preferably about 1 to 2.times.10.sup.-8 m, thus protecting the underlying metal layer (12) against damage by the electrode (20), and attack by moisture or dampness from the ambient atmosphere.

Abstract: To prevent the formation of scratches, surface discontinuities, slide tracks or striations, for example due to sliding of electrodes (20) over the metal layer (12) of a metalized recording medium, a protective surface coating (13) of low-friction sliding protective material is applied in the form of discontinuous islands over the metal layer (12). The discontinuities permit electrical contact between the electrode (20) and the metal layer (12) although the protective surface coating (13) has insulating properties. The coating (13) may be polymerized hexamethyl-disiloxane, hexafluoropropylene, or Teflon, polymerized, preferably in hot cathode glow discharge; or a metallic soap. The protective layer is hydrophobic in the form of islands of a thickness of between 10.sup.-9 m to 10.sup.-7 m, preferably about 1 to 2.times.10.sup.-8 m, thus protecting the underlying metal layer (12) against damage by the electrode (20), and attack by moisture or dampness from the ambient atmosphere.