Abstract: A metal foil connection of first and second metal foils having a thickness of less than 0.05 mm includes a connecting point in which the metal foils are brazed to one another. The connecting point forms a wedge which is filled with brazing medium. A mass of the brazing medium, and a mass of sections of the metal foils which the brazing medium contacts in the wedge, have a given ratio. A honeycomb body, a brazing medium particle fraction and a method for manufacturing metal foil connections with a thickness of less than 50 micrometers, are also provided.

Abstract: An apparatus for producing a honeycomb body from a stack having a plurality of at least partially structured sheet metal layers forming a plurality of channels through which a fluid can pass, including a mould having an internal shape substantially corresponding to an external shape of a honeycomb body to be produced, a wrapping device for holding a stack at least partially structured sheet metal layers at a central region thereof, the wrapping device being pivotally disposed about an axis for wrapping the stack, and a holding device having positioning elements at least partially insertable into channels formed in the central region of the stack for maintaining a structural configuration in the central region of the stack during a wrapping of the stack.

Abstract: A fuel cell module containing at least two fuel cells, especially low-temperature fuel cells, is described. Each fuel cell has two electrodes of different polarity as well as an electrolyte positioned between the electrodes. Each fuel cell is supplied with fuel via a fuel supply channel and with an oxidant via an oxidant supply channel. The fuel cells are substantially juxtaposed. The electrodes of different polarity are electrically connected with each other. The electrolytes of each cell are situated essentially in the same plane. Several fuel cells connected in series constitute a string or row and several strings can be connected in parallel.

Abstract: A metal foil connection of first and second metal foils having a thickness of less than 0.05 mm includes a connecting point in which the metal foils are brazed to one another. The connecting point forms a wedge which is filled with brazing medium. A mass of the brazing medium, and a mass of sections of the metal foils which the brazing medium contacts in the wedge, have a given ratio. A honeycomb body, a brazing medium particle fraction and a method for manufacturing metal foil connections with a thickness of less than 50 micrometers, are also provided.

Abstract: In order to reduce polluting components of an exhaust gas from a combustion engine, a structure with a metal sheet is proposed, which has a catalytically active surface. The surface of the metal sheet is at least partially provided with a catalytically active metal oxide layer, in particular titanium oxide.

Abstract: A catalyst carrier body for an exhaust system of an internal combustion engine, especially of a motor vehicle, includes a matrix having an inflow surface, an outflow surface, a periphery, and a multiplicity of catalytic surfaces around which exhaust gas can flow. The catalytic surfaces have front regions and form flow-through passages. The outflow surface has a shape, at least in an inner region thereof, causing the front regions to be exposed and not covered outwardly, toward the periphery, by others of the catalytic surfaces. The exposed front regions have lengths, at least in a partial region of the outflow surface, amounting to from 55% to 90% of the length of the flow-through passages, for increasing an outward dissipation of heat. As a result, outwardly open heat radiating areas are guaranteed for an improved emission of heat to the surroundings or into the exhaust system.

Abstract: A support assembly for an oblique introduction of force and an absorption of kinetic energy during an impact, especially for a motor vehicle, includes a supporting structure and a deformation element. The deformation element rests with at least one side against a support element on the support structure and has a honeycomb matrix body with a longitudinal axis and hollow chambers formed by walls. The deformation element is fixed to the support structure in such a way that at least a part of forces generated during in impact are introduced into the walls at an angle relative to the main direction in which the walls extend. A vehicle bumper system and a method of producing a deformation element are also provided.

Abstract: A process for applying glue and brazing material to a honey-comb body includes coating structured metal sheets with adhesive or binder at given positions of zones of the metal sheets to be subsequently coated with brazing material and brazed. Subsequently, the metal sheets are layered or wound into a honeycomb body having a multiplicity of channels for the passage of a fluid. A continuously adhering brazing powder is applied to all of the given positions of the layered or wound body. Excess brazing powder is shaken or blown out of the body. A corresponding device includes a transport path for structured sheets and rotatable sponge-like rollers to be saturated with adhesive or binder. The rollers are disposed laterally alongside and/or above and/or below the transport path. The rollers are rotatable by a transport motion of the sheets or drive mechanisms are provided for rotating the rollers.

Abstract: To manufacture a honeycomb body, it is proposed that at least one stack is layered up from a plurality of at least partly structured sheet metal layers. Each stack is folded over about a bending line such that a sheet metal pack is formed having a curved first end area and a second end area. The second end area has a first end section and a second end section. A first end face of the first end section forms a first angle with a central plane, and a second end face of the second end section forms a second angle with the central plane, wherein the first angle is smaller than the second angle. The sheet metal packs are held by looping devices disposed in a mold, and the sheet metal pack is looped into a honeycomb body by rotation of the looping devices.

Abstract: A system for converting at least one exhaust-gas component of an exhaust-gas stream of an internal combustion engine is disclosed. The system contains a first device that has a catalytic action and a second device that is positioned downstream of the first device in a direction of flow of the exhaust-gas stream. The second device has at least one electrically heatable first honeycomb body and a second honeycomb body that has at least one coating which at least partly absorbs hydrocarbons, and a third electrically heatable honeycomb body. Three honeycomb bodies are disposed behind each other in the direction of flow of the exhaust-gas stream.

Abstract: A method for applying a brazing medium to a configuration, which includes a honeycomb body and a jacket pipe, is described. First, the honeycomb body is formed by stacking and/or winding of sheet metal layers. At least some of which are structured sheet metal layers, such that the honeycomb body has channels for conducting a fluid flow. The honeycomb body is introduced into the jacket pipe. At least one end face of the honeycomb body is brought into contact with a roller having an adhesive medium disposed thereon, and the roller is mounted rotatably about a roller axle. The configuration and the roller are moved relative to one another such that the roller deposits the adhesive medium onto the honeycomb body. Subsequently, a brazing medium is introduced at least into the honeycomb body.

Abstract: A catalytic converter for cleaning the exhaust gas of an internal combustion engine with a supercharger. The catalytic converter has a catalyst carrier body and is adapted to being fitted into a connecting joint in an exhaust pipe upstream of supercharger in a direction of exhaust gas flow. A retaining element fastens the catalyst carrier body in the connecting joint.

Abstract: A catalytic converter for cleaning exhaust gas, particularly from a small engine, includes a converter housing and at least one honeycomb body disposed therein and containing layers of sheet metal having catalytically active material. The converter is disposed on a dividing wall of a muffler housing for a small engine. The dividing wall has at least one opening. The housing has an upper housing component and a lower housing component. The converter housing is shaped in such a way that exhaust gas can flow successively through the honeycomb body and the opening and the converter housing is spaced apart from the muffler housing. Such a converter can be manufactured cost-effectively, can easily be integrated into existing structures and does not lead to unacceptable temperatures of the outer wall of the muffler housing during operation.

Abstract: A process for applying glue and brazing material to a honeycomb body includes coating structured metal sheets with adhesive or binder at given positions of zones of the metal sheets to be subsequently coated with brazing material and brazed. Subsequently, the metal sheets are layered or wound into a honeycomb body having a multiplicity of channels for the passage of a fluid. A continuously adhering brazing powder is applied to all of the given positions of the layered or wound body. Excess brazing powder is shaken or blown out of the body. A corresponding device includes a transport path for structured sheets and rotatable sponge-like rollers to be saturated with adhesive or binder. The rollers are disposed laterally alongside and/or above and/or below the transport path. The rollers are rotatable by a transport motion of the sheets or drive mechanisms are provided for rotating the rollers.

Abstract: An apparatus for producing a honeycomb body from a stack having a plurality of at least partially structured sheet metal layers forming a plurality of channels through which a fluid can pass, including a mould having an internal shape substantially corresponding to an external shape of a honeycomb body to be produced, a wrapping device for holding a stack at least partially structured sheet metal layers at a central region thereof, the wrapping device being pivotally disposed about an axis for wrapping the stack, and a holding device having positioning elements at least partially insertable into channels formed in the central region of the stack for maintaining a structural configuration in the central region of the stack during a wrapping of the stack.

Abstract: A method of making a hollow shaft having multiple functional elements arranged along the axis of an inner shaft tube is provided. Several multiple shafts equipped with functional elements may be joined by expansion using probes inserted into the shafts and connected to a high pressure generator. In addition, a method of providing functional elements to an inner tube wherein the individual non-round functional elements have annular projections concentric to the base circle is provided, where the internal diameter of the functional elements is slightly larger than the external diameter of the shaft tube. The functional elements have an annular region on their lateral edges of approximately half the wall thickness that complements the adjacent non-round functional element to achieve a full wall thickness and the annular projections are produced by re-formation of the profile tube.

Abstract: A hollow body and a method for producing a hollow body having at least two oval sleeves and an annular connecting journal between each of the sleeves. Each of the sleeves has uniform circumferential wall thickness and an outer peripheral region having a smaller radius and forming a crown. The annular connecting journals have a uniform circumferential wall thickness, a circular inner surface and are disposed between each of the oval sleeves. Each oval sleeve projects over the annular connecting journal in the region of the smaller radius with the projection being greatest at the crown. The wall thickness of the annular connecting journal is partly greater than the wall thickness of the oval sleeve. The annular connecting journal and the oval sleeve have equal cross-sectional areas. Material remaining between the annular connecting journal and the oval sleeves after forming is removed from the small radius region of the oval sleeve.

Abstract: The invention relates to a design element having an aperture. To connect the design element to a hollow shaft it is slid onto the hollow shaft which is hydraulically expanded and thereby plastically deformed. The plastic deformation of the hollow shaft causes permanent elastic pretension in a surface layer of the aperture of the design element. The surface layer of the aperture has a thickness of several Angstrom units and is connectable to the hollow shaft in a material-locking manner.

Abstract: A device for the simultaneous hydraulic expansion of a plurality of longitudinal portions of a hollow shaft for the production of force-locking and/or positive-locking connections between the latter and elements slid thereon, (such as cams, toothed wheels or bearing seats), in the form of a pressure medium probe. This comprises at least one longitudinally extending feed channel and radial feed bore holes to every longitudinal portion of the hollow shaft to be expanded, which is characterized by a sealing arrangement which seals longitudinal portions of the hollow shaft remaining undeformed against the action of the pressure medium from longitudinal portions of the hollow shaft to be expanded.

Abstract: A honeycomb body includes leading and trailing end surfaces being mutually spaced apart in a given flow direction. Subsections are disposed in succession in the given flow direction between the end surfaces. At least some sheet-metal layers have structures forming channels therebetween extending approximately in the given flow direction through which a fluid can flow. The channels have dimensions determined by the structures of the sheet-metal layers. Each of the subsections has a different number of channels per unit of cross-sectional area and the channels have cross-sectional areas differing in each of the subsections. The sheet-metal layers include some layers being smooth or slightly structured in proportion to the dimensions of the channels, having spacings therebetween and extending from the leading to the trailing end surfaces giving the honeycomb body a monolithic form, and the sheet-metal layers include different numbers of other sheet-metal layers filling the spacings in each of the subsections.