Abstract: The present invention relates to a method for manufacturing an air gap-insulated exhaust collector for an exhaust system of an internal combustion engine, in particular in a motor vehicle, wherein individual gas-conducting components of an inner shell body are inserted into one another in the region of at least one slide fit, wherein a calibrating process, in which a reduction in cross section takes place at least on the respective outer component, is carried out in the region of at least one slide fit of this type when the components are inserted into one another.

Abstract: The present invention relates to a component (1) for a motor vehicle (5), particularly an exhaust system, which can be fastened to a carrier (4) of the motor vehicle (5) by means of at least one fixture (3), with a component housing (2) comprising a housing wall (6), wherein the respective fixture (3) comprises at least one holder (8) having an inner leg (9) extending parallel to the housing wall (6) and an outer leg (10) standing away from the housing wall (6) to the outside. The fatigue strength of the fixture (3) can be improved if the housing wall (6) comprises a passage opening (7), through which the outer leg (10) protrudes, while the inner leg (9) areally bears against the housing wall (6) in the interior (11) of the component housing (2).

Abstract: The present invention relates to a housing (1) with a jacket (2), enclosing a housing interior space (7) in circumferential direction (8). For reducing self-induced vibrations of the jacket (2), at least one preloading device (14) is proposed, which is arranged in the housing interior space (7), which supports itself on a first supporting region (15) of the jacket (2) on the inside of the jacket (2) subject to a first preload (16) orientated towards the outside and which supports itself on a second supporting region (17) of the jacket (2) spaced from the first supporting region (15) on the jacket (2) on the inside subject to a second preload (18) orientated towards the outside.

Abstract: The invention relates to a latent heat storage catalyst (3) for an exhaust system (1) in an internal combustion engine, in particular of a motor vehicle, comprising a member (5) that includes several parallel ducts (6). First ducts (6?) contain a phase change material (7), and second ducts (6?) have a catalytic coating (14). In order to be able to produce said latent heat storage catalyst at a low cost, the member (5) is formed by at least one layered structure (9) comprising two metal sheets (10, 11), at least one of which is corrugated and which rest against each other and are attached to one another such that the ridges of the at least one corrugated metal sheet (10) form the ducts (6).

Abstract: An exhaust gas treatment device for an exhaust system of an internal combustion engine includes a housing that is adapted to be tied into the exhaust system and at least one exhaust gas purification insert arranged in the housing. The exhaust gas purification insert includes an insert housing which is open at one end and at least one exhaust gas purification element arranged in the insert housing. The housing has at least one insert bracket which has at least one mounting opening on whose opening edge is supported an end section of the insert housing in the form of a ring. The end section forms a first spherical shell segment and the opening edge forms either a second spherical shell segment that is complementary to the first spherical shell segment or a conical jacket segment that fits the first spherical shell segment.

Abstract: The present invention relates to a muffler (8) for an exhaust system (6) of a combustion engine (1), more preferably of a motor vehicle, with a housing (14) comprising at least one exhaust gas inlet (18) and at least one exhaust gas outlet (19), with a pipe arrangement (20) for conducting exhaust gas arranged in the housing (14), which comprises at least one pipe section (21) running within the housing (14), and with a hollow space (22) formed in the housing (14), which is present in addition to the pipe arrangement (20) and is connected to said pipe arrangement at least for the airborne sound transmission.

Abstract: The invention relates to an internal combustion engine having at least one combustion chamber, wherein a surface of at least one component of the combustion chamber and/or of an internal-combustion-engine component which is close to the combustion chamber and carries the exhaust gas stream is at least partially coated with a catalytic coating, said surface coming into contact with an air-fuel mixture or with an exhaust gas stream. The invention provides that the catalytic coating has a nanostructure composed of oblong structural elements, wherein the first ends of the structural elements adhere to the coated surface and the second ends of the structural elements project into the combustion chamber or into the space which carries the exhaust gas stream. Such a coating is preferably produced according to the gas flow sputtering method or according to the magnetron sputtering method.

Abstract: The present invention relates to a method for operating a fuel cell system, wherein the fuel cell system comprises at least one reformer for generating a reformate gas and at least one fuel cell for generating an electric current. An increased lifespan for the anode is achieved when with said anode an anode state value is continuously determined which correlates to a current degree of loading with carbon of the anode of the at least one fuel cell and when depending on the anode state value an oxygen-carbon ratio is varied in the reformate gas which is fed to the anode of the respective fuel cell.

Abstract: A process is provided for manufacturing an exhaust gas treatment device (1), which contains at least one exhaust gas treatment insert (2) in a tubular housing (4), especially for an exhaust system of an internal combustion engine. A circumferential geometry of the at least one insert (2) is measured in at least one axial section of the particular insert (2). The at least one insert (2) is inserted axially into the housing (4). The measured circumferential geometry of the at least one insert (2) is taken into account during the deformation of the housing (4).

Abstract: The present invention relates to an exhaust gas cleaning device (2) of an exhaust system (1) of a combustion engine, more preferably of a motor vehicle, with a catalytic converter unit (3) having a catalytic converter support pipe (7) and at least one oxidation catalytic converter element (8) mounted in the catalytic converter support pipe (7), and with a particle filter unit (4) having a particle filter support pipe (11) and at least one particle filter element (12) mounted in the particle filter support pipe (11). A simple handling with simple construction can be achieved with a receiving pipe (5) in which one of the support pipes (7, 11) is axially inserted, and with a clamp connection (6) which sets the receiving pipe (5), the catalytic converter support pipe (7) and the particle filter support pipe (11) against one another.

Abstract: The invention relates to a system component of an exhaust system for a combustion engine, more preferably of a motor vehicle, with at least one component portion having a closed hollow space structure (2), wherein walls of the closed hollow space structure (2) enclose a reaction chamber (5), in which at least one stationary system component (6) of a reactive heating system is arranged. By using a reactive heating system a rapid heating-up of at least one system component of the exhaust system is advantageously possible.

Abstract: The present invention relates to a flange plate for connecting exhaust pipes to a combustion engine, with at least two connecting sockets integrally moulded on the flange plate, on each of which an exhaust pipe can be fastened, and with a plurality of through openings for fixing the flange plate to the combustion engine. Thermal expansion effects can be better compensated if at least one of the connecting sockets is formed in a connecting region, which is surrounded by a slit penetrating the flange plate, wherein the respective slit comprises at least one interruption and the respective connecting region in the region of the respective interruption is connected to the remaining flange plate.

Abstract: An exhaust gas treatment device for an exhaust system of an internal combustion engine, has a housing in which is arranged at least one ceramic body for exhaust gas treatment. To reduce the risk of damage for the ceramic body and/or the housing in the case of an inexpensive design, the ceramic body has a machined contact zone at least on its outlet end, and the housing has a bearing zone facing the ceramic body on its outlet end. The contact zone and the bearing zone cooperate with one another so that in the case of axial contact on the outlet end between the ceramic body and the housing, the ceramic body is in direct and axial contact with the housing in a line or over an area via the contact zone and the bearing zone, so that the contact is distributed in the circumferential direction or is continuous.

Abstract: The present invention relates to a method for operating a piston engine, more preferably of a motor vehicle, with a fresh air system for feeding fresh air to cylinders of the piston engine and with an exhaust system for discharging exhaust gas from the cylinders, wherein during a gas exchange by means of a positive pressure wave on the fresh air side the charging of the respective cylinder with fresh air and/or by means of a negative pressure wave on the exhaust gas side the discharging of exhaust gas from the respective cylinder is supported. An increased variability is obtained if the respective pressure wave is generated by means of at least one electroacoustic converter.

Abstract: The present invention relates to an arrangement for the heat transfer between a tubular body suitable for conducting a fluid and a contact body that is in contact with said tubular body, wherein the contact body comprises a contact side facing the tubular body, with which the contact body is in contact with an outside of the tubular body facing the contact body, wherein in a tensioned state of the arrangement a preload force presses the contact body against the tubular body in a preload direction.

Abstract: The present invention relates to an exhaust gas treatment device for an exhaust system of a combustion engine, more preferably of a motor vehicle with a housing comprising a jacket and an outlet funnel, with at least one exhaust gas treatment element which is arranged in the jacket and which via a support ring is axially supported on the housing, wherein the outlet funnel comprises an outer funnel and an inner funnel. A simplified design is obtained if the outer funnel at an inner end facing the jacket is connected to the jacket in a fixed manner and at an outer end facing away from the jacket is connected in a fixed manner to the inner funnel, and if between the inner funnel and the outer funnel an insulation space circumferentially running in circumferential direction is formed and the inner funnel at an inner end facing the jacket carries the support ring and relative to the outer funnel is at least axially loose.

Abstract: The present invention relates to an exhaust gas treatment device for an exhaust system of a combustion engine, more preferably of a motor vehicle, with a housing comprising a jacket and an outlet funnel, and with at least one exhaust gas treatment element which is arranged in the jacket and is axially supported on the housing via a support ring. A simplified construction is obtained if the outlet funnel comprises an outer funnel connected to the jacket in a fixed manner and an inner funnel, which at an inner end facing the jacket carries the support ring, between inner funnel and outer funnel an insulation space is formed, which envelopes the inner funnel in circumferential direction, and if the inner end of the inner funnel contacts an inner end of the outer funnel facing the jacket.

Abstract: The present invention relates to a heat transfer device, more preferably for an exhaust system of a combustion engine, preferentially of a motor vehicle, with at least one warm tube for conducting a fluid emitting heat, with at least one cold tube for conducting a fluid absorbing heat and with at least one thermoelectric generator for generating electric energy from a temperature difference, wherein a thermoelectric generator each is arranged between a warm tube and a cold tube. The efficiency of the heat transfer device is improved if the respective thermoelectric generator is in contact with the respective tube via a heat conducting material and if the respective heat conducting material is configured as shaped body.

Abstract: The present invention relates to an exhaust system for an internal combustion engine, in particular in a motor vehicle, comprising an exhaust line in which an exhaust treatment device, in particular an oxidation catalyst or a particulate filter is arranged for treating the exhaust gases coming from the internal combustion engine. It is essential to this invention that a device for heating the exhaust gases in the exhaust line is arranged upstream from the exhaust treatment device and is connected to a fuel supply and an air supply, the latter producing primary air and secondary air, and the device has a pre-oxidation zone a downstream post-oxidation zone, such that the pre-oxidation zone is connected to the fuel supply for its supply of liquid fuel and is connected to the air supply for its supply of primary air, while the post-oxidation zone is connected to the air supply for its supply of secondary air.

Abstract: The present invention relates to an exhaust gas treatment device for an exhaust system of an internal combustion engine, more preferably of a road vehicle with a housing, in which at least one exhaust gas treatment element is arranged and mounted by means of a bearing mat and with an outlet pipe which is fluidically connected to an outlet chamber formed in the housing. The risk of a contamination of the bearing mat with water can be reduced with a separating bottom which is arranged in the housing and separates the outlet chamber from a collecting chamber. The separating bottom includes several passage openings through which the outlet chamber is fluidically connected to the collecting chamber and which are each enclosed by a collar protruding into the outlet chamber.