Abstract: A method for manufacturing an exhaust gas treatment device (1), which has at least one ceramic substrate body (3, 4) for exhaust gas treatment in a tubular housing (2), includes inserting the substrate body (3) axially into the housing (2). An axial support (13), which has a supporting ring (14) and a ring-shaped support element (15) held by the supporting ring (14), is inserted axially into the housing (2) and is positioned therein such that the axial support (13) transmits a predetermined axial force (28) to the substrate body (3) via the support element (15). The axial support (13) is fixed to the housing (2) with the axially prestressed (predetermined axial force) positioning, in which the supporting ring (14) is welded to the housing (2).

Abstract: A pipe (11), carrying exhaust gas, of an exhaust system (1) of an internal combustion engine (9), with a tubular body (15) carrying exhaust gas, and with at least one attachment part (12) separate with respect to the tubular body (15), which is added laterally to the tubular body (15) so that externally on the tubular body (15) a cavity (13) is arranged delimited at least partially by the attachment part (12), which extends in the circumferential direction (14) of the tubular body (15) over less than 360°.

Abstract: A muffler (1) for an exhaust system of a vehicle driven by an internal combustion engine, includes a gas-tight housing (2), a partition wall (31) inside the housing, an inlet pipe (51), a first outlet pipe (61), a switchable second outlet pipe (7) and a resonator pipe (8). The a partition wall (31) divides the housing's interior into a first volume (41) and a second separate volume (42). The inlet pipe and the first outlet pipe (61) and the second outlet pipe and the resonator pipe are in fluid communication with the first volume. The resonator pipe provides fluid communication between the first volume and the second volume. The second outlet pipe passes through the second volume. The second outlet pipe is surrounded, in a circumferential direction, by the resonator pipe in a section in which the second outlet pipe penetrates the partition wall.

Abstract: An arrangement (1) of an electroacoustic actuator (2) on a vehicle structure (3) of a motor vehicle, has a housing (4), in which at least one loudspeaker (7) is arranged, which separates a front volume (8) from a rear volume (9) in the housing (4). The actuator (2) has a sound emission pipe (5), which projects outwards from the housing (4) and which is fluidically coupled with the front volume (8). A reduced introduction of noise into the vehicle arises when the actuator (2) is held on the vehicle structure (3) with a plurality of holding devices (19), which are arranged on the housing (4) in a circumferential direction (20) of the housing (4) spaced apart from one another. Each holding device (19) is designed as springy in a holding direction (21) and as rigid transversely thereto.

Abstract: A muffler (1) for an exhaust system of an internal combustion engine has a housing (2) with an expansion chamber (6). An inlet pipe (7) extends into the housing (2) and has an end section (8) with an outlet opening (9) to the expansion chamber (6). A main outlet pipe (10) has an initial section (11) protruding into the end section (8) of the inlet pipe (7). A secondary outlet pipe (15) has an inlet opening (16) in the expansion chamber (6). A gap (14) in an overlapping area (13) between the end section (8) and the initial section (11) forms a bypass in the end section (8) of the inlet pipe (7), which bypasses the initial section (11) of the main outlet pipe (10). Through the bypass gap (14), exhaust gas flows from the inlet pipe (7) into the expansion chamber (6) and out the secondary outlet pipe (15).

Abstract: An air gap-insulated exhaust manifold (10) for a supercharged internal combustion engine (1), preferably of a motor vehicle has an engine flange (11) fastening the exhaust manifold to an engine block (2) and a turbine flange (12) fastening the exhaust manifold to a turbine (8) of an exhaust gas turbocharger (7). Two inner pipes (13, 14) lead from an inlet opening, for exhaust gas, adjacent to the engine flange to an outlet opening (18), for exhaust gas, adjacent to the turbine flange. An outer pipe (15) envelopes the two inner pipes, forming an air gap insulation (21), and extends from the engine flange to the turbine flange. A separation partition (16) separates, in the interior space (22) of the outer pipe, two interior spaces (23, 24), in which one each of the two inner pipes is arranged. Reduced wear is achieved with the partition arranged loosely at the turbine flange.

Abstract: A component of an exhaust system for a combustion engine, particularly of a motor vehicle, has a hollow jacket at least partially surrounding the component. An intermediate space is surrounded by the walls of the hollow jacket and is closable in a pressure-tight manner. The intermediate space is fluidically connected to a vacuum generating device via a vacuum connection line and via a vacuum connection point of the component. With the vacuum generating device, a vacuum can be generated in the intermediate space. Through arrangement of a filler material, such as a support structure and/or of a fiber material and/or of a foam, in the intermediate space the stability of the hollow jacket can be improved.

Abstract: The present invention relates to a loudspeaker (1; 1?; 1?) with a loudspeaker housing (2; 2?), a basket (3) held in the loudspeaker housing (2; 2?) and bearing a permanent magnet (9), a coil (91) arranged in a constant magnetic field generated by the permanent magnet (9) and connected with a diaphragm (5), and at least one heat pipe (10) with a heating zone (Z1) and cooling zone (Z3), wherein the heating zone (Z1) is arranged on the permanent magnet (9), and the cooling zone (Z3) on the loudspeaker housing (2; 2?). The present invention further relates to the use of such a loudspeaker for actively extinguishing or influencing sound waves, and a noise control system (100) for exhaust systems of a vehicle powered by an internal combustion engine with such a loudspeaker (1; 1?, 1?).

Abstract: A heat exchanger (7) for an exhaust gas system (5) of an internal combustion engine (1) includes a thermoelectric generator (13) with plural thermoelectric elements (15) that each have a hot side (16) and a cold side (17). A heating channel (18) conducts a heating medium on the hot sides and a cooling channel (19) conducts cooling medium on the cold sides (17). The thermoelectric generator (13), the heating channel (18), and the cooling channel (19) are arranged adjacent in a stacking direction (20) and form a channel stack (21). A housing (8) that encloses an interior (22) accommodates the channel stack (21) and has medium inlets (9, 11), outlets (10, 12) and electrical connections (14). The thermoelectric elements are arranged in a double-walled intermediate bottom (15) that separates the cooling channel (19) from the heating channel (18), adjacent to said cooling channel, in regard to fluid flow.

Abstract: A mixing and/or evaporating device (12) for an exhaust system (5) of an internal combustion engine (1) encloses in the circumferential direction a cross section, through which flow is possible. The device (12) has two mutually opposite long side walls (21, 22) and two mutually opposite short side walls (23, 24). The short side walls (23, 24) connect each the two long side walls (21, 22) to one another. A plurality of guide blades (25), which project in the direction of the other long side wall (21, 22) and are set at an angle in relation to the axial direction (20), are arranged at at least one axial end (26, 27) at at least one long side wall (21, 22). Additional guide blades (29) are arranged at at least one long side wall (21, 22) at a distance (s) in the axial direction (20) from an axial end (26).

Abstract: A muffler (1) for an exhaust system of a motor vehicle internal combustion engine has a housing (2), with an exhaust gas inlet (4) and an exhaust gas outlet (5), including a circumferentially extending jacket (16) and end panels (14, 15) each axial ends. A chamber (18) in the housing interior (3), through which exhaust gas flows during operation, is axially limited by intermediate panels (20, 21) at axial ends. The thermal load on the jacket (16) is reduced with an insulating shell (29), arranged in the housing interior, extending in the circumferential direction (17) along the jacket (16). The two intermediate panels (20, 21) are supported on the insulating shell (29), each with an outer panel edge (30, 31). The insulating shell (29) is supported radially on the jacket (16) with a shell edge (33). An insulating gap (35) is formed radially between the jacket and the insulating shell.

Abstract: A component (6) of an exhaust system (1) for an internal combustion engine (3), of a motor vehicle, has a housing including a shell (12), two end bottoms (13, 14) and an intermediate bottom (15, 16). The shell (12) encloses an interior space (18) of the housing (11) in a circumferential direction (19). The two end bottoms (13, 14) delimit the interior space (18) in an axial direction (17) at opposite ends and are fixed to the shell (12). The intermediate bottom (15) is arranged in the interior space (18) axially between the end bottoms (13, 14) and is radially supported on the shell (12). A holding pipe (22), for connection of the component (6) to a system periphery (9), is radially held on the intermediate bottom (15) in the interior space (18), passes through one end bottom (13), is fastened thereon and is closed off in a gas-tight manner.

Abstract: A particle filter (2) for filtering exhaust gas in an internal combustion engine includes a housing and a filter element. A simplified installation and/or simplified replacement of the filter element (5) and/or improved sealing of the housing (4) results if the filter element (5) is supported in an inner jacket (9), which is supported radially in an outer jacket (12) and is arranged so as to be axially movable in the outer jacket (12). The inner jacket (9) is axially supported on a ring (24), which is supported axially on a cover (22) that closes an installation opening (20) of the housing (4) via at least one supporting element (25) in order to transmit pressure forces. A muffler (1) is provided having such a particle filter (2), wherein a section of a muffler housing (3) of the muffler (1) forms the housing (4) of the particle filter (2).

Abstract: A finned-tube heat transfer device (1) has a housing (2) enclosing a first flow path (3) for a first fluid with a first inlet (4) and a first outlet (5). A tube system (9) forms a second flow path (10) for a second fluid with a second inlet (11) and a second outlet (12) and which is coupled to the first flow path (3) in the housing (2) in a heat transferring manner. The tube system (9) has a multitude of tubes (13) that are parallel to one another, which extend between two housing walls (7) laterally delimiting the first flow path (3). The tubes are provided with fins (14), within the first flow path (3), which are fluidically interconnected outside the first flow path (3). A simplified producability can be achieved if the fluidic connection of the tubes (13) is effected within the two housing walls (7).

Abstract: The invention provides an exhaust heat utilization device for a combustion engine with an exhaust heat utilization circuit, in which a working medium circulates. An evaporator is arranged in the exhaust heat utilization circuit for evaporating the working medium, which can be supplied with exhaust gas of the combustion engine, with an expansion machine arranged in the exhaust heat utilization circuit downstream of the evaporator for expanding the working medium. A condenser is arranged in the exhaust heat utilization circuit downstream of the expansion machine for condensing the working medium. A delivery device is arranged in the exhaust heat utilization circuit downstream of the condenser for driving the working medium in the exhaust heat utilization circuit and with a heat storage unit. The device is given an improved functionality when the heat storage unit is incorporated in the exhaust heat utilization circuit and can be supplied with working medium.

Abstract: An exhaust system mixer (12) mixes a reactant with an exhaust gas flow (3) and includes a pipe section (13), which borders a flow cross section (16), through which the exhaust gas flows (3), in the circumferential direction (17), and which extends in an axial direction (18) from a first axial side (19) to a second axial side (20), and a plurality of guide blades (14, 15), which project from the pipe section (13) at least on one of the axial sides (19, 20), so as to protrude into the flow cross section (16). Guide blades (14, 15) on an axial side, which follow each other in the circumferential direction (17), include a first guide blade group (21), arranged on the respective axial side (19, 20), axially offset in relation to the guide blades (15) of the second guide blade group (22), to reduce a pressure drop.

Abstract: An exhaust system (1) for an internal combustion engine has an exhaust line (2), which has at least one exhaust pipe (3) having a pipe wall (4) with an inner side (5) defining an exhaust gas path (6) guiding an exhaust gas flow (7) and an electric heating device (18) for heating at least one length section of the exhaust pipe (3). An efficient design is obtained if a heating coil (21) is wound several times around the exhaust pipe (3) on an outer side (22) of the pipe wall (4) in the respective length section and has an electric conductor (23) made of a resistance heating material. An electric insulator (24) is arranged between the conductor (23) and the outer side (22) of the pipe wall (4). A heat-insulating cover (25) envelops the exhaust pipe (3) at least in the area of the respective heating coil (21).

Abstract: A sound generator (1) for an exhaust system (2) of an internal combustion engine of a motor vehicle (3) includes a housing (4), with an electroacoustic converter (5) having a membrane (6) separating a housing rear volume (9) from a housing front volume (10). A connection pipe (11) connects the front volume (10) of the sound generator (1) to an exhaust gas-carrying exhaust gas line (12) fluidically and acoustically. To reduce the risk of damage to the membrane (6), for example, in case the housing (4) becomes flooded, a pressure equalization line (15) is connected by a proximal end (16) to the housing (4) on the outside and is connected fluidically with the rear volume (9) through an opening (18) in the housing. A distal end (17) of the pressure equalization line (15) is at a spaced location from the housing (4).

Abstract: A mixing element (1) for a mixing device in an exhaust gas-conducting pipe (8) of an exhaust system of a combustion engine provides advantageous intermixing of the exhaust gas with an additive and an advantageous temperature distribution within the exhaust gas-additive mixture. The mixing element (1) includes at least four vanes (2) and a connecting section (3). The vanes (2) are angled off from the connecting section (3). Two vanes (2) which, with respect to a longitudinal axis (5) of the connecting section (3), are directly adjacent or two vanes (2) which are located directly opposite, with respect to the longitudinal axis (5) of the connecting section (3), are angled off towards different sides (4?, 4?) of the connecting section (3). The mixing element (1) as well as the connecting section (3) and the associated vanes (2) are embodied as shaped sheet metal part.

Abstract: A muffler (1) for an exhaust system of a vehicle driven by an internal combustion engine, includes a gas-tight housing (2), a partition wall (31) inside the housing, an inlet pipe (51), a first outlet pipe (61), a switchable second outlet pipe (7) and a resonator pipe (8). The a partition wall (31) divides the housing's interior into a first volume (41) and a second separate volume (42). The inlet pipe and the first outlet pipe (61) and the second outlet pipe and the resonator pipe are in fluid communication with the first volume. The resonator pipe provides fluid communication between the first volume and the second volume. The second outlet pipe passes through the second volume. The second outlet pipe is surrounded, in a circumferential direction, by the resonator pipe in a section in which the second outlet pipe penetrates the partition wall.