Abstract: A thermoelectric device contains at least one module having a first carrier layer and a second carrier layer, an interspace disposed between the first carrier layer and the second carrier layer, and an electrical insulation layer disposed on each of the first carrier layer and on the second carrier layer toward the interspace. The thermoelectric device further has a plurality of p and n-doped semiconductor elements, which are arranged alternately in the interspace between the insulation layers and are alternately electrically connected to one another.

Abstract: A configuration for treating exhaust gases of an internal combustion engine having a predetermined displacement volume, includes an exhaust gas recirculation line. Exhaust gas flowing through the exhaust gas recirculation line interacts with a turbocharger. A screening layer is provided in the exhaust gas recirculation line upstream of the turbocharger. The screening layer is larger than an average cross section of the exhaust gas recirculation line. A motor vehicle having at least one such configuration is also provided.

Abstract: An apparatus for determining a tank fill level includes at least one cap, an extraction pipe which extends through the cap and at least partially has an electrically conductive material, a jacket pipe disposed around the extraction pipe and at least partially has an electrically conductive material, and a measuring unit forming a first electrode with the extraction pipe and a second electrode with the jacket pipe. A tank for a urea/water solution is also provided, in which the apparatus is used as a quality sensor and/or a fill level sensor. A motor vehicle having a tank is also provided.

Abstract: A honeycomb body, in particular for use in the exhaust system of a motor vehicle, includes an at least partially ceramic honeycomb structure through which a fluid can flow. The honeycomb structure is disposed in a tubular casing and has cavities. The honeycomb body has at least two axial subregions in a longitudinal direction. The honeycomb structure is connected to the tubular casing in an axial securing region and an axial measurement sensor region has a recess for accommodating a measurement sensor in the honeycomb structure. The honeycomb body has a permanent connection between the tubular casing and the ceramic honeycomb structure due to its preferably force-locking and/or form-locking connection between the tubular casing and the honeycomb structure in the securing region. Despite the recess, further damage to the honeycomb structure in the measurement sensor region is avoided. A process for producing such a honeycomb body is also provided.

Abstract: A method for producing a honeycomb body includes providing an annular radial partial region with channels through which a fluid can flow. The honeycomb body is formed from at least one metallic layer fastened at least at one fastening point to an outer casing tube. Each metallic layer has alternating substantially smooth and structured sections folded onto one another. A honeycomb body is also provided. The method and the honeycomb body advantageously permit an annular honeycomb body with low material expenditure and good durability to be produced.

Abstract: A method for removing soot particles from an exhaust gas of an internal combustion engine, especially of a diesel engine, includes feeding the exhaust gas through a collecting element through which the exhaust gas can pass freely but which is provided with a plurality of deflections and/or zones of swirl and calming or stabilization. At least a proportion of the particles are held or swirled around in the collecting element until there is a sufficient probability of reaction with nitrogen dioxide and a majority of the collected particles have been removed. A collecting element has flow channels through which the exhaust gas can pass freely. However, the flow channels are configured in such a way as to form deflections or zones of swirl and calming or stabilization. A system having the collecting element is also provided.

Abstract: A method for removing soot particles from an exhaust gas of an internal combustion engine, especially of a diesel engine, includes feeding the exhaust gas through a collecting element through which the exhaust gas can pass freely but which is provided with a plurality of deflections and/or zones of swirl and calming or stabilization. At least a proportion of the particles are held or swirled around in the collecting element until there is a sufficient probability of reaction with nitrogen dioxide and a majority of the collected particles have been removed. A collecting element has flow channels through which the exhaust gas can pass freely. However, the flow channels are configured in such a way as to form deflections or zones of swirl and calming or stabilization. A system having the collecting element is also provided.

Abstract: A foil for producing a metal honeycomb or catalyst carrier body, has an average surface roughness of more than 0.3 ?m (micrometers) on both surfaces in at least one measurement direction. Preferably, the foil is rolled and has an average surface roughness of more than 0.3 or 0.5 ?m, especially approximately 0.6 ?m, in the rolling direction and/or transverse thereto. The foil can have an oxide coating with a thickness between 60 and 80 or between 70 and 75 nm (nanometers) on both surfaces. Despite the roughness, an even thickness of the oxide coating with a tolerance of less than 10% or 5% is advantageous on both surfaces. The foil allows production of durable honeycomb bodies, especially for exhaust systems of internal combustion engines, requiring an exactly defined distribution and quality of compounds in the interior thereof. A honeycomb body and method of production using a foil, are also provided.

Abstract: A module for a thermoelectric generator includes first and second ends, at least one inner tube and one outer tube disposed around the outside of the inner tube and at least one thermoelectric element disposed between the inner and outer tubes. The inner and outer tubes are each electrically insulated from the at least one thermoelectric element. At least one electrically conductive first contact is provided on each of the first and second ends, for electrically conductively connecting the at least one thermoelectric element to an electrical conductor. The module can conduct a fluid or coolant flow through the module from the first end to the second end. An electrical conductor, a thermoelectric generator, a motor vehicle and a method for producing a module, are also provided.

Abstract: A method and a device for the addition in droplet form of a liquid reducing agent to an exhaust gas line of an internal combustion engine, particularly to a rear end side of an exhaust gas treatment component, includes at least identifying at least one exhaust gas parameter during operation of the internal combustion engine, determining a size of a droplet of the reducing agent to be added as a function of an exhaust gas parameter, adjusting a first delivery pressure of the reducing agent toward the exhaust line as a function of the determined size of the droplet, and adding the reducing agent to the exhaust line with an adding unit. In this way, it can be achieved, in particular, that the end side of the exhaust gas treatment component is evenly wetted during operation of the internal combustion engine by using the droplets of the reducing agent.

Abstract: According to a current operating state (BZ) of an internal combustion engine and/or a specified particle number emission limit (PE), a minimum hydrocarbon concentration (HCMK) of a combustion chamber exhaust gas of the internal combustion engine that is required to comply with the specified particle number emission limit is determined. An operation (B) of the internal combustion engine is specified to achieve a hydrocarbon concentration (HCK) of the combustion chamber exhaust gas that is at least as large as the determined minimum hydrocarbon concentration (HCMK).

Abstract: A configuration for purification of an exhaust gas flow of an internal combustion engine includes at least one exhaust gas line having an element for exhaust gas purification with a first end face and a second end face. The exhaust gas flows through the element from the first end face to the second end face. An adding device is provided downstream of the element for adding a reactant to the exhaust gas flow. The adding device is positioned at a distance of no more than 30 mm from the second end face of the element in such a way that at least part of the added reactant strikes the second end face of the element. A method for adding a reactant into an exhaust line during the operation of an internal combustion engine is also provided.

Abstract: A tank for a reducing agent includes at least one side wall and a bottom. At least one heating unit is provided at least in the side wall or in the bottom. A motor vehicle having a tank is also provided.

Abstract: A method for regenerating an open particle separator includes at least determining at least one parameter, as a characteristic variable of a regeneration capability of the open particle separator. The at least one parameter is compared with a first threshold value. At least one portion of a comparison period during which the parameter has reached the first threshold value is determined. The portion is compared with a first minimum portion corresponding to a minimum regeneration time in the comparison time period. Measures are initiated to influence the parameter so that the parameter lies at least according to the first minimum portion and the first threshold value is reached and/or the open particle separator is regenerated. A motor vehicle having at least one open particle separator is also provided.

Abstract: A method for operating an evaporation unit for converting a volume flow to an ammonia-containing gas flow includes providing the evaporator unit with at least one first section and a second section downstream of the first section. The volume flow flows through the sections for evaporation. The volume flow is heated to not more than 180° C. in the first section by supplying a first amount of heat energy and the volume flow is heated to more than 350° C. and completely evaporated in the second section. A motor vehicle having an evaporation unit is also provided.

Abstract: A configuration for purifying or cleaning an exhaust-gas flow of an internal combustion engine includes at least an ionization device, an agglomeration device, and a (catalytically active) radial honeycomb body around a duct. The exhaust-gas is diverted from the duct into the radial honeycomb body, while the agglomerated particles are caught in a particle separator of the duct. A method for purifying or cleaning an exhaust-gas flow of an internal combustion engine and a motor vehicle including an exhaust system having the configuration, are also provided.

Abstract: A modular tank system for a liquid reducing agent includes three modules. A first module has a tank with a first opening and an opposite second opening. A second module has a cap element for holding at least one discharge tube. A third module has a sump element. The cap element is disposed in the first opening and the sump element is disposed in the second opening. A motor vehicle having the modular tank system is also provided.

Abstract: A method is provided for operating a device having at least one electrically heatable honeycomb body through which an exhaust gas can flow. The electrically heatable honeycomb body has at least one current distribution structure to which a plurality of short, successive voltage pulses are initially applied during activation, before a constant heating voltage is applied to the current distribution structure to heat the honeycomb body. A suitable device for the catalytic conversion of exhaust gases in an exhaust system is also provided.

Abstract: A method for removing particulates from a gas stream includes providing a gas-permeable filter layer having subregions with a parameter of differing magnitudes in the direction of the layer thickness. This parameter relates at least to the porosity, the fiber diameter of fibers or the fiber type content of the filter layer. The gas stream is divided into partial gas streams which are each passed through different subregions of the filter layer. Fiber layers, particulate filters, exhaust systems and vehicles based on this method are also provided.

Abstract: A component of an exhaust gas system for an internal combustion engine includes at least one housing with an inlet and an outlet for an exhaust gas and at least one inflow and one outflow for a medium. The component has a heat exchanger around which the exhaust gas can flow. The heat exchanger has a first thermal mass and a catalytic converter body through which the exhaust gas can flow. The catalytic converter body has a second thermal mass. A motor vehicle having a component and a method for operating a component, are also provided.