Abstract: A thermoelectric material contains fibers and a method for producing a thermoelectric material uses fibers. The fibers, in this case, in particular, perform the function of influencing thermal conductivity, electrical conductivity, tensile strength and/or extensibility of the thermoelectric material. The thermoelectric material is used, in particular, in thermoelectric generators which are used, for example, in motor vehicles for converting thermal energy from the exhaust gas into electrical energy.

Abstract: A thermoelectric device includes at least one first flow duct, at least one second flow duct, at least one first carrier layer associated with the at least one first flow duct and at least one second carrier layer associated with the at least one second flow duct, at least one intermediate space between the first carrier layer and the second carrier layer and a plurality of p and n-doped semiconductor elements disposed in the at least one intermediate space and electrically interconnected. A relative first thermal expansion of the first carrier layer and a relative second expansion of the second carrier layer are equal under operating conditions. Suitable materials are provided for the first and second carrier layers that promote the use of such thermoelectric devices in exhaust systems of a motor vehicle. A motor vehicle having thermoelectric devices and a method for manufacturing a thermoelectric device are also provided.

Abstract: A thermoelectric device or thermoelectric generator (TEG) includes at least one exhaust line having an inlet and an outlet. At least one first tube bundle is a thermoelectric generator module and has tubes with outer surfaces forming the exhaust line in the thermoelectric generator module. At least one further tube bundle is a heat exchanger and has tubes with inner surfaces forming the exhaust line in the heat exchanger. A method for operating a thermoelectric device and a motor vehicle having a thermoelectric device are also provided.

Abstract: An injection nozzle for supplying reducing agent to an exhaust gas system includes a plurality of outlet openings, each of which can generate different droplets of the reducing agent. A device for the treatment of exhaust gases includes an exhaust gas treatment unit and at least one corresponding injection nozzle, in which at least two groups of outlet openings form different impingement regions on the exhaust gas treatment unit.

Abstract: A carrier body includes an overall surface having at least one coating portion with a catalytically active coating including at least one type of catalyst elements disposed in dispersed form at a surface of the carrier body. The catalyst elements have a mean spacing along the surface of at least 3 micrometers. The surface has a mean roughness depth Rz of 2 to 10 micrometers. The carrier body has a maximum increase in pressure loss compared to a carrier body with a smooth and uncoated surface of 25%. A process for producing a carrier body and an exhaust gas treatment unit and a vehicle having a carrier body, are also provided.

Abstract: An installation component for a tank includes, at least in parts, an electrically conductive material which forms a first electrode, and a second electrode which is electrically insulated with respect to the first electrode. At least one of the electrodes is applied to the installation component, in particular by a pad printing process, an airbrush printing process or a screen printing process. An apparatus for determining a fill level of a tank, a method for producing an installation component, a tank and a motor vehicle having a tank, are also provided.

Abstract: A honeycomb body includes a housing and a honeycomb structure with a plurality of channels. The honeycomb structure is formed by at least one at least partially structured metallic layer which forms connecting points that fix the honeycomb structure in place. A cross section of the honeycomb structure has radial zones with the connecting points. At least 1% and no more than 20% of inner contact points of the at least one at least partially structured metallic layer in the cross section form a connecting point in at least one zone. The connecting points have lengths in a structure direction being different in at least two radial zones.

Abstract: An exhaust gas system for purifying exhaust gases of an internal combustion engine, particularly a diesel engine in a motor vehicle, conducts the exhaust gas in a specific flow direction. A catalytic converter, particularly for converting hydrocarbons and carbon monoxides contained in the exhaust gas, an oxidation catalytic converter, particularly for converting nitrogen monoxide contained in the exhaust gas and a particulate trap for collecting particulates contained in the exhaust gas, are disposed successively in the flow direction. The exhaust gas system ensures a highly efficient conversion of harmful substances contained in the exhaust gas, and a particularly positive effect with respect to the regeneration of the particulate trap also occurs.

Abstract: A configuration contains a first honeycomb body, which is formed by at least one convoluted or wound stack and has a plurality of channels allowing a flow, wherein a first end of the stack is connected to an electric connection and a second end is connected to an electric ground. The stack contains a plurality of sheet metal foils in electric contact with each other, the foils being structured at least in some regions. At the same time, the honeycomb body has support pins for connecting to a second honeycomb body, the pins have a distance of at least 25 mm from each other along the course of the stack at least outside an inner region. A method introduces support pins into the honeycomb body and a device receives a honeycomb body and/or for positioning support pins. The device enables the installation of the support pins in the honeycomb body.

Abstract: A device includes an electrically heatable honeycomb body, particularly for treating an exhaust gas flow of a mobile internal combustion machine. The device includes sheet metal foils forming channels and being in electrical contact with a housing. The housing has a terminal for connection to a voltage source, a plurality of contact points disposed remotely from the terminal for contacting the sheet metal foils and a respective contact conductor between the terminal and each contact point. The contact conductors have the same electrical resistance. A motor vehicle having at least one such device is also provided.

Abstract: A device and method for providing a gaseous substance mixture which includes at least one reducing agent and/or at least one reducing agent precursor, includes a reservoir for an aqueous solution which includes at least one reducing agent precursor that can be flow connected to an evaporator chamber, and a device for dosing the aqueous solution in the evaporator chamber. A device can heat the evaporator chamber to a temperature higher than or equal to a critical temperature, in which the aqueous solution is at least partially evaporated. The device and method enable reducing agent to be provided for selective catalytic reduction of nitrogen oxides in the exhaust of an internal combustion engine. Preferably, an evaporator unit is configured as the evaporator chamber and a hydrolysis catalytic converter is disposed outside the exhaust system. As a result, the size of the hydrolysis catalytic converter is reduced, allowing compact construction.

Abstract: A method for producing a metallic honeycomb body from metallic layers with channels through which an exhaust gas stream can flow, includes providing the honeycomb body with a coating. Such honeycomb bodies are used in exhaust gas systems of preferably mobile internal combustion engines as catalyst carrier bodies, filters, mixers and/or adsorbers. The coating is provided in a two-stage application and enables the production of exceptionally advantageous coated metallic honeycomb bodies, which are distinguished by a large coating surface and a low flow resistance. At the same time, an exceptionally large surface enlargement is provided in the honeycomb body while using a smaller amount of coating. A honeycomb body is also provided.

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 turobcharger. 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: A honeycomb body for an exhaust-gas purification system may be used, for example, as a carrier body for catalytically acting coatings or as a filter, absorber or mixer in the exhaust system of an internal combustion engine. The honeycomb body has channels, an axial main direction, a planar front surface, a planar end surface and a circumferential surface disposed parallel to the axial main direction. The front surface and/or the end surface are disposed obliquely with respect to the axial main direction. Such a honeycomb body is advantageous, in particular, for applying reducing agent to the oblique end or front surface. A method for producing a honeycomb body, an exhaust line section and a motor vehicle are also provided.

Abstract: A thermoelectric generator includes a plurality of thermoelectric devices, through which an exhaust gas of an internal combustion engine flows in succession. Each thermoelectric device forms at least one hot flow path for the exhaust gas and at least one cold flow path for a coolant. A plurality of p-doped and n-doped insulated semiconductor elements are connected in a targeted manner between the flow paths. At least part of the semiconductor elements in at least one of the thermoelectric devices are fixed to a flexible medium.

Abstract: A method and a device provide for the controlled feeding of a reducing agent into an exhaust gas treatment unit with a storage capability for an exhaust gas component to be reduced which is generated from a mobile internal combustion engine. The method includes at least the following steps: a) determination of a quantity of the exhaust gas component to be reduced which is generated by the mobile internal combustion engine, b) determination of a storage capability of the exhaust gas treatment unit for the exhaust gas component to be reduced, c) determination of a metering of the reducing agent into the exhaust gas treatment unit as a function of steps a) and b), and d) feeding the reducing agent into the exhaust gas treatment unit.

Abstract: A method for feeding reducing agent or reducing agent precursor into exhaust systems of mobile internal combustion engines and an exhaust system are preferably used for internal combustion engines with high nitrogen oxide compound emissions. A feed time is established. An exhaust parameter and/or necessary quantity of reducing agent is determined and a feed state of the reducing agent is defined. The reducing agent is treated if the feed state does not correspond to a stored state. The reducing agent feed to the exhaust system takes place last. The steps are repeated multiple times. This permits reducing agent to be fed into an exhaust system in a state suitable for the exhaust temperature, so that complete conversion of reducing agent takes place and selectively catalytic reduction is also ensured. This reduces the quantity of electrical energy necessary for converting reducing agent. A motor vehicle having the system is also provided.

Abstract: An evaporator device for ammonia to be used in mobile exhaust gas systems includes a basic body encompassing at least one inlet line and at least one outlet line. At least one heating element and at least one duct for connecting the inlet line to the outlet line are disposed within the basic body. The at least one heating element is in heat-conducting contact with an evaporation section of the at least one duct, while the at least one duct has a meandering course in the evaporation section. A motor vehicle and a method for producing an evaporator device, are also provided.

Abstract: A device and a method for producing electrical energy from an exhaust gas of an internal combustion engine include a generator with an exhaust gas inlet, an exhaust gas outlet and a heat exchange portion therebetween. The heat exchange portion includes a plurality of flow paths for the exhaust gas. The flow paths are at least partially surrounded by thermoelectric elements which are in thermally conductive communication with a cooling device on a side facing away from the flow path. A motor vehicle having the device or carrying out the method, is also provided.

Abstract: A method for operating an exhaust system including at least one oxidation catalytic converter, at least one configuration for selective catalytic reduction and at least one measuring probe for determining the effectiveness of the configuration, includes at least determining a conversion effectiveness of the configuration using the at least one measuring probe and calculating an effectiveness of nitrogen monoxide conversion in the oxidation catalytic converter from the determined conversion effectiveness. In this way, an estimate of the effectiveness of the nitrogen monoxide conversion to nitrogen dioxide of an oxidation catalytic converter in the exhaust system can be obtained without additional measuring probes in or on the oxidation catalytic converter. This reduces the maintenance frequency of the exhaust gas system and at the same time enables precise regulation of the exhaust gas conversion as a whole. An exhaust system and a vehicle having an exhaust system are also provided.