Abstract: An injector for adding a liquid additive into an exhaust gas treatment apparatus includes at least one nozzle having a spray disc configured to inject the liquid additive into the exhaust gas treatment apparatus. The spray disc has: at least one spray duct, through which flow of the liquid additive can pass, the spray duct having an outlet opening configured to shape a spray jet of the liquid additive. The spray disc has a reinforcing structure arranged downstream of the outlet opening, the reinforcing structure being configured such that it is not wetted by the spray jet.

Abstract: A filter for the purification of exhaust gases of an internal combustion engine includes: a housing that can be flowed through by exhaust gas in an axial direction and has an inflow side and an outflow side; a filter body is formed in the housing from a plurality of filter layers, which filter body can be flowed through by the exhaust gas flowing through the housing. The filter layers are of annular form and are arranged concentrically with respect to one another, wherein, in alternating fashion, two filter layers adjacent to one another in a radial direction are connected to one another in fluid-tight fashion at the inflow side, and two filter layers adjacent to one another in a radial direction are connected to one another at the outflow side.

Abstract: A pump for pumping a liquid has a pump housing with at least one inlet and at least one outlet. The pump housing has an eccentric rotatable relative to the pump housing by an axle. A deformable element is arranged between the pump housing and the eccentric, and by the deformable element, at least one pump path from the at least one inlet to the at least one outlet is delimited and at least one movable pump path seal is formed, which separates at least one closed pump volume in the pump path. The at least one movable seal is movable in a pump direction from the inlet to the outlet by a movement of the eccentric to pump the fluid along the pump path. The pump has at least one adjustable axial calibrating device, by which the deformable element is clamped in the axial direction parallel to the axle.

Abstract: Tank for an operating liquid for a motor vehicle. Tank (1) for an operating liquid for a motor vehicle (2) with a tank wall (3) made of plastic, having an opening (4) and an insert (5), made of metal, arranged at the opening (4), and a flexible sealing element (6) for interconnecting, in a liquid-tight manner, the tank wall (3) and the insert (5), wherein, on account of thermal expansion of the tank wall (3) and of the insert (5), relative displacements (7) arise between the tank wall (3) and the insert (5) and the flexible sealing element (6) is configured such that sealing faces (8, 16) are formed both on the insert (5) and on the tank wall (3), against which faces the sealing element (6) bears independently of the relative displacements (7).

Abstract: A tank system for a reducing agent includes: a vessel configured to store the reducing agent, the vessel having: an upper vessel walk lateral vessel walls, and a lower vessel wall configured to form a base of the vessel; and a heating device disposed in the vessel. At least parts of the heating device are disposed in a part of the base of the lower vessel wall of the vessel.

Abstract: A tank system for a reducing agent includes: a vessel configured to store the reducing agent, the vessel having: an upper vessel wall, lateral vessel walls, and a lower vessel wall; and a conveying device, the conveying device being configured to provide the reducing agent under pressure by way of an outlet to an exhaust gas. One or more openings are arranged in the lower vessel wall the one or more openings forming a connection to a further volume (V) filled with reducing agent. At least one opening of the one or more openings has radially inwardly directed elements arranged on a circumference of the at least one opening.

Abstract: A tank system for a reducing agent includes: a vessel storing the reducing agent and having: an upper vessel wall, lateral vessel walls, a lower vessel wall forming a vessel base, a base region of the vessel having an opening, and an outer side of the vessel; and a conveying device on the outer side of the vessel that provides the reducing agent under pressure via an outlet to an exhaust gas. The conveying device with the outer side of the vessel forms a space S outside the vessel, the space S, via the opening, is connected to an interior of the vessel allowing reducing agent to flow from the interior into the space S and, by the conveying device, is suppliable from the space S to the exhaust gas and suctionable from the space S. A support is provided on the opening.

Abstract: A tank system for a reducing agent includes: a vessel storing the reducing agent and having: an upper vessel wall, lateral vessel walls, a lower vessel wall forming a base of the vessel, a base region of the vessel having at least one opening, and an outer side of the vessel; and a conveying device, arranged on the outer side of the vessel, that provides the reducing agent under pressure to exhaust gas. The conveying device is disposed on the outer side of the vessel such that the conveying device, with the outer side of the vessel, forms a space S outside the vessel. The space S, by the at least one opening, is connected to the vessel interior allowing the reducing agent to flow from the interior of the vessel into the space S and is suppliable by the conveying device from the space S to the exhaust gas.

Abstract: An injector for adding a liquid additive into an exhaust gas treatment apparatus includes at least one nozzle having a spray disc configured to inject the liquid additive into the exhaust gas treatment apparatus. The spray disc has: at least one spray duct, through which flow of the liquid additive can pass, the spray duct having an outlet opening configured to shape a spray jet of the liquid additive. The spray disc has a reinforcing structure arranged downstream of the outlet opening, the reinforcing structure being configured such that it is not wetted by the spray jet.

Abstract: A method for operating a device for dosed supply of a liquid, having a pump to deliver the liquid. The pump has an inlet and an outlet. An eccentric is arranged on the pump housing and a deformable diaphragm is arranged between a pump housing and the eccentric. The deformable diaphragm and the pump housing delimit a delivery path from the inlet to the outlet. The seal can be displaced along the delivery path by movement of the eccentric. A pressure sensor is connected to the outlet of the pump. A liquid is delivered by the pump. A time curve of the pressure at the outlet of the pump is monitored during delivery by the at least one pressure sensor. An angle position of the eccentric of the pump is detected using at least one characteristic feature of the time curve at the outlet.

Abstract: A pump for conveying a liquid, having a pump housing that has at least one inlet and at least one outlet, an eccentric element being rotatably arranged in said pump housing and surrounded by a deformable membrane, the deformable membrane and pump housing delimiting at least one conveyor path from the at least one inlet to the at least one outlet and forming at least one seal for the conveyor path, and the seal being able to be displaced along the conveyor path by a movement of the eccentric element. Between the eccentric element and the deformable membrane, a spring layer is arranged by the eccentric element and deformable membrane are tensioned relative to one another.

Abstract: A honeycomb body includes at least one housing and a honeycomb structure with a plurality of channels. The honeycomb structure is formed from at least one at least partially structured metallic layer which forms connecting points fixing the honeycomb structure. A cross section of the honeycomb structure has radial zones with differing densities of the connecting points. In at least one zone, at least 1% and at most 20% of inner contact points in the cross section also form a connecting point. An exhaust-gas purification unit and a motor vehicle are also provided.

Abstract: A device includes at least one tank having a tank bottom and a delivery unit for a liquid. The delivery unit is disposed in a chamber on the tank bottom and the chamber includes at least one heater. The tank preferably has at least one local ventilation heater extending from a discharge for liquid on the tank bottom over at least one tank side to the vicinity of a tank top.

Abstract: A method for operating a device configured to provide a dosed supply of a liquid. The device has: a pump delivering the liquid and having a pump housing having an inlet and an outlet, an eccentric on the pump housing, and a deformable diaphragm arranged between the pump housing and the eccentric. The deformable diaphragm and the pump housing delimit a delivery path from the inlet to the outlet and form at least one seal of the delivery path, the seal being displaceable along the delivery path by a movement of the eccentric to deliver the liquid. The method comprises: detecting a demanded dose amount of the liquid; activating the pump to deliver the liquid by the pump; stopping operation of the pump when the delivered amount of the liquid corresponds to the demanded dose amount; deactivating the pump when the eccentric is situated in a predefined park position.

Abstract: A method for operating a device for providing a liquid additive having at least one suction point for removing liquid additive from a tank, a valve-free conveying line extending from the suction point to a supply unit, and a valve-free displacement pump, the displacement pump being configured to convey the liquid additive from the tank via the suction point along the conveying line to the supply unit, the displacement unit having at least one seal of the conveying line, displaceable along the conveying line for conveying the liquid additive, includes: a) detecting a stoppage of operation of the device; b) establishing a position of the seal within the positive-displacement pump; and c) changing the position of the seal if the position of the seal does not correspond to a provided park position of the seal.

Abstract: A configuration for a power supply of a component in an exhaust gas system includes at least one electrical contact disposed at an exhaust gas line. The at least one electrical contact is surrounded by an electrical insulation material.

Abstract: An apparatus includes at least one tank having a tank bottom and a delivery unit for a liquid. The delivery unit is disposed in a chamber on the tank bottom and the chamber has at least one heater.

Abstract: A device providing a dosed supply of a liquid includes: a pump configured to deliver the liquid and having a pump housing with an inlet and an outlet; an eccentric on the pump housing; and a deformable diaphragm between the pump housing and the eccentric, the deformable diaphragm and the pump housing delimiting a delivery path from the inlet to the outlet and forming a seal of the delivery path. The seal is displaceable along the delivery path, by a movement of the eccentric, in a delivery direction from the inlet to the outlet to deliver the liquid. The pump is configured such that within the pump a friction torque that must be overcome for the eccentric to move is greater than a maximum pressure torque that can be generated by pressurized liquid in the delivery path, so as to prevent movement of the eccentric counter to the delivery direction.

Abstract: A method for operating a device that conveys a fluid includes: A) detecting activation of the device; B) filling a conveying line with the fluid by operating at least one pump in a conveying direction from at least one tank to at least one injector, and detecting complete filling of the conveying line based on at least one sudden pressure increase at at least one pressure sensor; C) operating the pump and making available fluid at the injector; D) detecting deactivation of the device; and E) partially emptying the conveying line by sucking back the fluid by operation of the at least one pump in a direction counter to the conveying direction. The emptying is stopped if pressure measured at the at least one pressure sensor corresponds to an ambient pressure.

Abstract: An exhaust gas purification system for diesel engines of utility motor vehicles, includes an oxidation catalytic converter disposed in an exhaust tract, a reducing agent dosing device having a reducing agent injection device, a reducing agent decomposition device, a soot particle separator, a reduction catalytic converter and a muffler for the exhaust gases. The oxidation catalytic converter is disposed within a minimum distance directly downstream of outlet valves of the engine and a maximum distance of 0.75 m from an exhaust collecting pipe or an outlet of a turbocharger. The reducing agent decomposition device, the soot particle separator and the reduction catalytic converter are disposed separately from the oxidation catalytic converter.