Abstract: The invention relates to an internal combustion engine having at least one combustion chamber, wherein a surface of at least one component of the combustion chamber and/or of an internal-combustion-engine component which is close to the combustion chamber and carries the exhaust gas stream is at least partially coated with a catalytic coating, said surface coming into contact with an air-fuel mixture or with an exhaust gas stream. The invention provides that the catalytic coating has a nanostructure composed of oblong structural elements, wherein the first ends of the structural elements adhere to the coated surface and the second ends of the structural elements project into the combustion chamber or into the space which carries the exhaust gas stream. Such a coating is preferably produced according to the gas flow sputtering method or according to the magnetron sputtering method.

Abstract: A process is provided for manufacturing an exhaust gas treatment device (1), which contains at least one exhaust gas treatment insert (2) in a tubular housing (4), especially for an exhaust system of an internal combustion engine. A circumferential geometry of the at least one insert (2) is measured in at least one axial section of the particular insert (2). The at least one insert (2) is inserted axially into the housing (4). The measured circumferential geometry of the at least one insert (2) is taken into account during the deformation of the housing (4).

Abstract: The present invention relates to an exhaust system for a combustion engine, more preferably of a road vehicle, with at least one exhaust gas-conducting component having a ring-shaped closed inner wall in circumferential direction, whose inner side is exposed to the exhaust gas. The energetic efficiency of the combustion engine can be improved with at least one thermoelectric generator which converts heat into electric energy and which is arranged on an outer side of the inner wall.

Abstract: The invention relates to an exhaust gas treatment device for an exhaust system of a combustion engine, more preferably of a road vehicle, with a housing enveloping at least one interior space, and with at least one through-pipe penetrating the interior space without interruption and which at two fastening points distant from each other is connected to the housing in a fixed manner. For compensating thermally related expansion effects the through-pipe between the fastening points can comprise at least one expansion compensation section, in which a wall of the through-pipe comprises slits penetrating the wall alternating in circumferential direction and strips protruding relative to adjacent wall sections of the through-pipe.

Abstract: A muffler (1) for an exhaust system of an internal combustion engine, especially of a motor vehicle, with a housing (2), which has a jacket (3) and an end bottom each at two mutually spaced longitudinal ends of the jacket (3). At least one jacket opening (7) is provided, which passes through the jacket (3) and through which an inner tube (8) arranged in the interior of housing (2) can be connected to a tube of the exhaust system. The manufacture of the muffler (1) can be simplified if the jacket (3) is segmented in the circumferential direction (5) and has a jacket segment (11), which is manufactured as a separate component in relation to the remaining jacket (12). The separate component jacket segment (11) is rigidly connected to the remaining jacket (12) and has the at least one jacket opening (7).

Abstract: An exhaust muffler (1) is provided for an at least partly dual-flow exhaust system of an internal combustion engine, especially of a motor vehicle. The exhaust muffler has a housing (2), which encloses an interior space (3), with two exhaust pipes (6), through which exhaust gas can flow in parallel, and which are each led through the interior space (3), and which have a side opening (8) each within the housing (2). A neck body (9) connects the two side openings (8) of the exhaust pipes (6) in a communicating manner to form a Helmholtz resonator with the interior space (3) of the housing (2), which interior space (3) acts as a resonance volume (12).

Abstract: The invention relates to a sound absorber for an exhaust system having a Y-shaped feed piece arranged upstream from the sound absorber, combining two exhaust gas-carrying lines to form a single line entering into the sound absorber whereby the Y-shaped feed piece and the sound absorber are assembled from a common bottom shell and a common top shell. The invention also relates to an exhaust system equipped with the sound absorber.

Abstract: A joint (1), especially of an exhaust system is provided for two axially adjacent ends (2, 3) of a tubular body (4, 5), respectively. Each tube end (2, 3) has a ring collar (8, 9) projecting radially outwards. A centering ring (6) is arranged axially between the tube ends (2, 3) and which has a plurality of collar segments (17) in the radial outward direction. Some of the collar segments (17a) project axially on one side of the centering ring (6) and axially overlap the ring collar (8) of one tube end (2), while the other collar segments (17b) project axially on the other side of the centering ring (6) and axially overlap the ring collar (9) of the other tube end (3) in the radial outward direction. A clamp (7) axially and radially overlaps the ring collar (8, 9) and the centering ring (6) in the radial outward direction.

Abstract: An exhaust system (1) is provided for an internal combustion engine (4), especially in a motor vehicle, with two separate exhaust gas lines (2, 3) with a first sound transmission feature (7), which couples the two exhaust gas lines (2, 3) with one another, and with a control (9) for activating and deactivating the first sound transmission connection (7) as a function of at least one operating parameter of the internal combustion engine (4).

Abstract: A burner for burning a gaseous fuel containing hydrogen with a gaseous oxidizer containing oxygen, having a combustion chamber in which the combustion reaction takes place during operation of the burner and having a wall structure which seals off the combustion chamber on the input end and which has multiple fuel openings through which the fuel is introduced into the combustion chamber during operation of the burner and has multiple oxidizer openings through which the oxidizer is introduced into the combustion chamber during operation of the burner.

Abstract: An evaporator assembly unit, especially for a vehicle heater or a reformer arrangement of a fuel cell system, includes a wall arrangement (12) enclosing an evaporation chamber (20) with a circumferential wall (14) and with a bottom wall (16). An air introduction shoulder (18) extending in the direction of a wall longitudinal axis (L) is provided with a plurality of first air introduction openings (22). Evaporator medium (26), that is porous at least in some areas, is provided on the side of the wall arrangement (12) facing the evaporation chamber (20). An auxiliary air opening arrangement (34) with at least one second air introduction opening (36) is provided in the wall arrangement (12).

Abstract: A conveying member, especially a rotor or stator, for conveying a flowable, preferably gaseous medium, comprises a plurality of blades (S1-S7) arranged following each other with a circumferential distance in a circumferential direction (U) around a central axis (A). Either a first circumferential distance (a) or a second circumferential distance (b) differing from the first circumferential distance (a) is provided between a blade and a respective blade following it in the circumferential direction (U) in a group of blades directly following each other in a circumferential direction (U), which the group comprises at least some of the blades (S1-S7). The first circumferential distance (a) is provided between at least two blades (S1-S7) located directly adjacent to one another, and the second circumferential distance is provided between at least two blades (S1-S7) located directly adjacent to one another.

Abstract: A metering pump, especially for feeding fuel to a vehicle heater, comprising a delivery plunger (50), which can be moved to and fro for delivering liquid medium, a guide sleeve (42), which partially accommodates the delivery plunger (50) and guides same for the reciprocating movement, wherein the guide sleeve (42) with an inner surface (46) thereof defines a pump ejection chamber (48) and it defines with an outer surface (60) thereof a channel arrangement (74) leading to the pump ejection chamber (48), wherein the guide sleeve (42) is carried in a carrier element (24) and is in contact with the carrier element (24) by its outer surface (60) essentially over the entire circumference in a first length area (58) and is located with its outer surface at a spaced location from the carrier element (24) in a second length area (64), wherein the channel arrangement (74) is provided between the carrier element (24) and the guide sleeve (42) in its second length area (64), is characterized in that in its second length

Abstract: The present invention relates to an exhaust system for an internal combustion engine, in particular in a motor vehicle, having an exhaust line carrying exhaust gas away from the internal combustion engine and having a fuel injector for injecting fuel into the exhaust line. The fuel injector is mounted on the exhaust line via a mounting device. This mounting device has a receiving body into which the fuel injector is inserted and which is mounted on the exhaust line via a disk-shaped flange. To reduce the risk of overheating of the fuel injector, the flange is mounted on the receiving body via a constriction in cross section and/or on the exhaust line via a thermal insulator.

Abstract: The present invention relates to an air-gap-insulated exhaust manifold (1) of an internal combustion engine, in particular in a motor vehicle, having a collecting line (2) that extends in a longitudinal direction (3), an outlet opening (4) oriented in the longitudinal direction (3), multiple inlet openings (5) oriented across the longitudinal direction (3) and a flange (6) that extends in the longitudinal direction (3) and includes the inlet openings (5), wherein an inside pipe (11) is situated in an outside pipe (10), forming an air-gap insulation, and whereby a gas-carrying outside pipe section (13) is provided in the area of at least one of the inlet openings (5) and leads from the respective inlet opening (5) to an assigned inside pipe inlet (14) which is at a distance from the flange (6). The inside pipe (11) is attached to the outside pipe (10) only in an attachment area (15).

Abstract: A heating device, particularly for a vehicle, includes a burner for producing combustion heat, and also a heat exchanger for transferring combustion heat produced in the burner to a medium to be heated.

Abstract: A process is provided for manufacturing a catalytic converter formed from at least one monolith being held in a catalytic converter housing, especially a motor vehicle catalytic converter. A mounting mat (14) is placed on the outer circumferential surface (38) of the monolith (12) in the process, and the monolith (12) is subsequently stuffed together with the mounting mat (14) into the catalytic converter housing. To apply the mounting mat (14) on the monolith (12), the monolith (12) is set into rotation, while the mounting mat (14) is being fed tangentially and is carried by the monolith (12). A plant for carrying out the process is also provided as well as an application device (10).

Abstract: The present invention relates to a catalyst for an internal combustion engine, particularly of a motor vehicle, with a housing, which is assembled from at least two housing portions, telescopically inserted one into another in the throughflow direction of the housing, which is assembled from two housing portions telescopically inserted one into the other. A first monolith is mounted in a first housing portion, and a second monolith is mounted in a second housing portion. In an insertion region, an outer end section of the second housing portion and an inner end section of the first housing portion inserted into the outer end section mutually overlap. A transition zone, in which the monoliths, are spaced apart from one another in the throughflow direction, is formed within the insertion region.

Abstract: A vehicle temperature control system comprising an internal combustion engine with an engine block and with a cylinder head, a heat source for heating a heat transfer medium, a heat exchanger arrangement for the transfer of heat transported in the heat transfer medium to air to be introduced into a vehicle interior, and a valve arrangement, by means of which the heat transfer medium heated by the heat source can be fed selectively, at least in part, to a first heat transfer region, provided in the region of the cylinder head, of the internal combustion engine, without being conducted into a second heat transfer region, provided in the region of the engine block, of the internal combustion engine.

Abstract: An evaporative burner, particularly for a vehicle heating device, includes a combustion chamber housing and, in the combustion chamber housing, an evaporative medium for receiving liquid fuel and for delivering fuel vapor into a combustion chamber. A heating coil arrangement is on a side of the evaporative medium remote from the combustion chamber, and an ignition region of the heating coil arrangement extends over the evaporative medium into the combustion chamber.