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 configuration includes two exhaust gas treatment devices disposed in succession in an exhaust gas line. A first exhaust gas treatment device has a first subregion connected through at least one support body to a second subregion of a second exhaust gas treatment device. The support body has opposite ends connected by connections points to respective subregions. At least the second subregion is formed by metallic components that contact one another to form contact surfaces and at most 20% of the area of the contact surfaces have brazed or solder connections and/or diffusion connections.

Abstract: A process for producing a structure in a smooth sheet-metal strip includes multiple process steps. In a first step, a first section of a smooth sheet-metal strip is fed to a first tool and a second section of the sheet-metal strip is fed to a second tool in a direction of advance. Then the sheet-metal strip is stopped. A sheet-metal machining of the first section of the sheet-metal strip is carried out using the first tool. A sheet-metal machining of the second section of the sheet-metal strip is carried out using the second tool, with the first feeding step being carried out simultaneously. An apparatus is provided for producing a sheet-metal strip of such a complex structure, which produces the structure with a very high degree of accuracy even when the materials properties differ.

Abstract: An apparatus for reducing soot particles in exhaust gas, particularly of an internal combustion engine, includes first and second at least partially electrically conductive structures with an intermediate space therebetween, a high voltage source forming a potential between the first and second structures and at least one at least partially electrically conductive intermediate structure in the intermediate space receiving an intermediate potential. A method for treating the exhaust gas includes conducting exhaust gas from the first to the second structure and applying a high voltage at least temporarily between the first and second structures. At least part of the soot particles in the exhaust gas is ionized or agglomerated and deposited on the second structure. A high voltage between potentials of the first and second structures is applied at least temporarily to the intermediate structure. An electric field is influenced favorably and disruptions from undesirable voltage flashovers are reduced.

Abstract: A method for providing a reducing agent-containing gas flow in the exhaust system of an internal combustion engine includes providing at least one reducing agent precursor, evaporating the precursor to provide a gas flow, at least partially heating the gas flow to temperatures of at least 250° C., at least partially converting the precursor in the gas flow to a reducing agent and adding the reducing agent-containing gas flow to the exhaust of the engine. The method and a device provide a reducing agent-containing gas flow in a quantity being easily controllable and adaptable to dynamic changes especially in exhaust systems of mobile applications such as automobiles. A temperature of a first zone is kept at 150° C. or just below while a temperature of a second zone is kept at more than 300° C. A hydrolysis catalytic converter is hardly cooled upon receiving the precursor as a vapor, positively affecting the method.

Abstract: A device for producing an electrical field in an exhaust gas system includes an exhaust gas line in which at least one electrode is disposed. The at least one electrode is in contact with a power supply and is constructed to have at least one metal plate.

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 the selective catalytic reduction of nitrogen oxides (NOx) in the exhaust gas from an internal combustion engine includes providing an exhaust system having: an SCR catalytic converter, a reagent addition point upstream of the SCR catalytic converter for adding at least one of a reducing agent and a reducing agent precursor, and a structure which the exhaust gas can at least flow around and is disposed immediately downstream of the reagent addition point.

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.

Abstract: An exhaust-gas aftertreatment system for an internal combustion engine of a vehicle includes at least one exhaust line, at least one turbocharger and at least one exhaust-gas converter. The at least one exhaust-gas converter is provided between the internal combustion engine and the at least one turbocharger and has a first volume of at least 0.6 liters. A method for purifying exhaust gas and a vehicle having the system, 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 honeycomb body includes ceramic walls all being entirely formed of printed layers forming channels through which a fluid can flow. The channels lie next to one another. At least one of at least one measuring sensor or electrically conductive mass forms a monolithic, unitary structure with one of the ceramic walls. Sensor material may be used as an alternative to ceramic material. A method of producing the honeycomb body is also provided.

Abstract: A honeycomb body is formed of smooth and structured metallic foils. The smooth foils have different average roughnesses or different oxide layer thicknesses than the textured foils. A method for producing the honeycomb body and a motor vehicle having the honeycomb body, are also provided.

Abstract: A device includes an injector for a liquid having at least one pressure sensor, preferably an integrated pressure sensor. The device is used, in particular, for adding liquid reducing agent to an exhaust gas line of a motor vehicle. A configuration having the device and methods of using the device and the configuration are also provided.

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 method for selectively heating a reducing agent line of an SCR device during operation of an exhaust gas purification system of an internal combustion engine and a device for exhaust gas purification, include a supply tank for a reducing agent for SCR applications, a device for introducing the reducing agent into an exhaust line of an internal combustion engine and at least one reducing agent line for fluidically connecting the supply tank to the device.

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: A honeycomb body includes at least one housing and metal foils forming a channel structure. The channel structure is fastened to the housing by a multiplicity of linear brazed connections. A production method for providing the linear brazed connections between the channel structure and the housing and an exhaust gas treatment component having the honeycomb body in an exhaust system of a motor vehicle, are 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 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.