Abstract: A device for exhaust-gas aftertreatment, such as an annular catalytic converter, having a first, tubular flow path, having a diverting chamber and having a second, annular flow path, wherein the tubular flow path is delimited outwardly in the radial direction by an inner pipe and the second, annular flow path is delimited inwardly in the radial direction by the inner pipe and outwardly in the radial direction by an outer pipe, and the diverting chamber is designed to divert the exhaust-gas flow from the tubular flow path (8) into the annular flow path, wherein the annular catalytic converter has at least one annular substrate body which has a catalytically active coating applied to it and which is arranged in the annular flow path.

Abstract: A current feed-through for an electrically heatable catalytic converter, wherein the catalytic converter has in the interior thereof at least one electrical conductor, which is electrically contactable by the current feed-through, having a central electrically conductive element, which is guided from the interior of the catalytic converter through the outer housing wall thereof, having an electrical insulation layer, which surrounds the electrically conductive element on its radial outer face, and having a metallic sleeve, in which the electrically conductive element and the electrical insulation layer is received, wherein at the current feed-through or directly adjacently to the current feed-through there is arranged a device for reducing the heat conduction from the interior of the catalytic converter along the current feed-through to a contact face arranged outside the catalytic converter.

Abstract: A honeycomb body for an electrically heatable exhaust gas tract catalytic converter, having a plurality of flow channels through which flow occurs along a main through flow direction formed from a plurality of metal foils stacked on one another to form a layer stack, which is wound around at least one pivot point. The layer stack has at least one first metal foil having a first corrugation and a second metal foil having a second corrugation. The first and the second metal foils form first and second corrugated layers. The honeycomb body has a plurality of winding layers, which are spaced apart from one another in the radial direction in the wound state by an air gap. The first corrugation is different from the second corrugation and the layer stack has at least three corrugated layers. The corrugated layers are separated from one another by a third metal foil.

Abstract: An electrical feedthrough and a method for producing an electrical feedthrough for contacting a heating conductor of an electrically heatable honeycomb body, comprising an electrically conductive pin, an electrically insulating insulation layer and a bushing in which the insulation layer and the pin are at least partially accommodated. The pin is arranged centrally and at least some portions of it are completely surrounded in the circumferential direction by the insulation layer. The three elements are connected to one another by a form fit and/or a force fit such that they cannot be separated non-destructively.

Abstract: A device includes an exhaust gas turbocharger and an annular catalytic converter, which is mounted downstream of the turbocharger in the flow direction, wherein the annular catalytic converter has a first tubular flow section, a deflecting region, and a second annular flow section, wherein the tubular flow section is formed by an inner tube, and the annular flow section is formed between an outer tube, running substantially parallel to the inner tube, and the inner tube, and the deflecting region is designed to deflect the exhaust gas flow out of the tubular flow section into the annular flow section, wherein the tubular flow section of the annular catalytic converter comprises the same components as the gas outlet of the turbocharger mounted upstream in the flow direction.

Abstract: A honeycomb body for a catalyst for aftertreatment of exhaust gas of an internal combustion engine, formed of a plurality of metal foils, which are stacked one on top of the other to form a layer stack and wound about at least one point of rotation. At least some metal foils have an at least partial structuring, by which flow channels are formed between the individual layers, through which flow channels gas can flow in a main flow direction from a gas inlet side of the honeycomb body to a gas outlet side. The honeycomb body is formed of two sub-portions over which the flow channels extend substantially without interruption, the sub-portions are positioned at an angle of at least 45 degrees relative to one another.

Abstract: A device for the aftertreatment of exhaust gases of an internal combustion engine, with an exhaust gas line, which is configured to feed the exhaust gas expelled from the internal combustion engine to at least one component for exhaust gas aftertreatment. The at least one adsorber for the temporary storage of hydrocarbons contained in the exhaust gas, a catalytic converter for the catalytic aftertreatment of the exhaust gas, an electrically heatable catalytic converter and a cracking catalytic converter for cracking long-chain hydrocarbons into shorter-chain hydrocarbons are arranged in the exhaust gas line.

Abstract: A device for aftertreatment of exhaust gases, having a flow section which is able to be flowed through by exhaust gas and has at least one honeycomb body, acting as a catalytic converter, and has at least one heating element. The heating element is formed from a ceramic material which is able to be flowed through along a plurality of flow channels from an inflow side to an outflow side. The heating element is electrically conductive along the walls delimiting the flow channels and, by an electrical contact, is connectable to a voltage source, wherein the heating element runs in a meandering manner over a through-flowable cross section of the flow section.

Abstract: A segmented electrical feedthrough for electrically contacting a heater conductor through a housing, having a contact portion and an insulation portion. The insulation portion has an electrical conductor, an insulation, and an outer sleeve, wherein the electrical conductor and the insulation are arranged within the outer sleeve and the electrical conductor is electrically insulated in relation to the outer sleeve by the insulation, wherein the contact portion is attached to the electrical conductor on a first end side, and the electrical conductor on the second end side thereof opposite the first end side is connectable to a heater conductor. The contact portion and the insulation portion are formed from two different elements which are durably connected to one another by a joining method.

Abstract: A device for aftertreatment of exhaust gases, having a flow section which is able to be flowed through by exhaust gas and has at least one honeycomb body, acting as a catalytic converter, and has at least one heating element. The heating element is formed from a ceramic material which is able to be flowed through along a plurality of flow channels from an inflow side to an outflow side. The heating element is electrically conductive along the walls delimiting the flow channels and, by an electrical contact, is connectable to a voltage source, wherein the heating element runs in a meandering manner over a through-flowable cross section of the flow section.

Abstract: A device for the aftertreatment of exhaust gases of an internal combustion engine, with an exhaust gas line, which is configured to feed the exhaust gas expelled from the internal combustion engine to at least one component for exhaust gas aftertreatment. The at least one adsorber for the temporary storage of hydrocarbons contained in the exhaust gas, a catalytic converter for the catalytic aftertreatment of the exhaust gas, an electrically heatable catalytic converter and a cracking catalytic converter for cracking long-chain hydrocarbons into shorter-chain hydrocarbons are arranged in the exhaust gas line.

Abstract: In a device for the aftertreatment of exhaust gases from an emission source, in particular an internal combustion engine, with an exhaust tract through which an exhaust gas can flow in a direction of flow, with at least one catalytic converter, the catalytic converter having a ceramic honeycomb body has: a catalytically active surface coating, and with an electrically heatable heater, the heater having a metallic electrical conductor, the honeycomb body further having a plurality of flow channels which can be flowed through from a gas inlet side to a gas outlet side, wherein the conductor is integrated in the ceramic honeycomb body, and is arranged downstream of the gas inlet side and upstream of the gas outlet side, as viewed in the direction of flow.

Abstract: A device includes an exhaust gas turbocharger and an annular catalytic converter, which is mounted downstream of the turbocharger in the flow direction, wherein the annular catalytic converter has a first tubular flow section, a deflecting region, and a second annular flow section, wherein the tubular flow section is formed by an inner tube, and the annular flow section is formed between an outer tube, running substantially parallel to the inner tube, and the inner tube, and the deflecting region is designed to deflect the exhaust gas flow out of the tubular flow section into the annular flow section, wherein the tubular flow section of the annular catalytic converter comprises the same components as the gas outlet of the turbocharger mounted upstream in the flow direction.

Abstract: An apparatus for heating an exhaust gas after-treatment unit in a vehicle has, as a drive source, both a combustion engine and an electric motor. The apparatus includes: a honeycomb body configured for exhaust gas to flow therethrough, the honeycomb body having a hollow, through which hollow the exhaust gas flows; and at least one electric heating element arranged in the hollow so as to heat the honeycomb body. The honeycomb body includes a plurality of metal foils stacked one on top of the other, which metal foils form between them a plurality of flow channels, through which a flow can pass along an axial direction, wherein the hollow of the honeycomb body extends in a radial direction, in which the at least one heating element is accommodated.

Abstract: A current feed-through for an electrically heatable catalytic converter, wherein the catalytic converter has in the interior thereof at least one electrical conductor, which is electrically contactable by the current feed-through, having a central electrically conductive element, which is guided from the interior of the catalytic converter through the outer housing wall thereof, having an electrical insulation layer, which surrounds the electrically conductive element on its radial outer face, and having a metallic sleeve, in which the electrically conductive element and the electrical insulation layer is received, wherein at the current feed-through or directly adjacently to the current feed-through there is arranged a device for reducing the heat conduction from the interior of the catalytic converter along the current feed-through to a contact face arranged outside the catalytic converter.

Abstract: A device for exhaust-gas aftertreatment, having a first, tubular flow path, having a diverting region and having a second, annular flow path. The tubular flow path is formed by an inner pipe and the annular flow path is, by an outer pipe running substantially parallel to the inner pipe, formed between the inner pipe and the outer pipe, and the diverting region is designed to divert the exhaust-gas flow from the tubular flow path into the annular flow path. The device has an annular catalytically active substrate body and an annular particle filter, wherein the substrate body and the particle filter are arranged in the annular flow path.

Abstract: A device for exhaust-gas aftertreatment, such as an annular catalytic converter, having a first, tubular flow path, having a diverting chamber and having a second, annular flow path, wherein the tubular flow path is delimited outwardly in the radial direction by an inner pipe and the second, annular flow path is delimited inwardly in the radial direction by the inner pipe and outwardly in the radial direction by an outer pipe, and the diverting chamber is designed to divert the exhaust-gas flow from the tubular flow path (8) into the annular flow path, wherein the annular catalytic converter has at least one annular substrate body which has a catalytically active coating applied to it and which is arranged in the annular flow path.

Abstract: The invention relates to an annular catalytic converter, having a first, tubular flow path, having a diverting region (4) and having a second, annular flow path, wherein the tubular flow path is formed by an inner pipe (1), wherein the annular flow path is formed between the inner pipe (1) and an outer pipe (2) surrounding the inner pipe, and the diverting region (4) is of pot-shaped form for the purposes of diverting the exhaust-gas flow from the tubular flow path into the annular flow path, wherein the inner pipe (1) and/or the outer pipe (2) has a conical cross section (D1, D2, D1, D4) that widens or narrows along the flow direction of the exhaust gas.

Abstract: A heating element for heating a component for exhaust gas aftertreatment using ohmic resistance includes: an unheated end region; an intermediate region; and a heated end region. The unheated end region and the heated end region are separated by the intermediate region, and the intermediate region consists of a thermally insulating material configured to minimize heat flow from the heated end region to the unheated end region.

Abstract: A device for cleaning exhaust gases includes: a housing configured such that exhaust gas is flowable through the housing in a main throughflow direction; an injector configured to dose a fluid into a region of the housing through which exhaust gas flows; an evaporator arranged in the housing, the evaporator having a plurality of surface elements extending along the main throughflow direction of the housing, and the fluid being dosable into the fluid along a direction extending perpendicularly to the main throughflow direction of the housing; and a heater configured to electrically heat the evaporator.