Abstract: A road vehicle (1) has a drive unit (2) for driving the vehicle (1), a drive unit control device (3) for driving the drive unit (2) and at least one sound generator (4), which has at least one electroacoustic converter (10). The sound generator (4) has an emission pipe (16), which connects the sound generator (4) acoustically and fluidically directly with an emission chamber (17). The an emission chamber (17) emits the sound generated by the converter (10) during the operation of the sound generator (4). Increased reliability of operation is achieved if a generator control device (26) is coupled with the drive unit control device (3) for driving the converter (10) and the generator control device (26) drives the converter (4) as a function of the current operating state of the drive unit (2).

Abstract: A sound generator, for a system for influencing sound waves propagating through an exhaust system of a vehicle driven by an internal combustion engine, includes an enclosure comprised of an upper shell and a lower shell. A bell mouth, supported by the lower shell and penetrating the lower shell, is configured for a fluid communication with the exhaust system. A loudspeaker is disposed in the enclosure and supported by the bell mouth. The lower shell of the enclosure supports the upper shell of the enclosure. The bell mouth is solely supported by the lower shell of the enclosure. The lower shell may include at least one air-tight feed-through for a control wire connected to the loudspeaker and/or at least one pressure equalizing valve. An anti-sound system is provided that includes the sound generator and a vehicle is provided with the anti-sound system.

Abstract: A heat exchanger, for an exhaust gas system (5) of an internal combustion engine (1), includes a thermoelectric module (13), converting thermal energy into electrical energy, having a hot side (17) and a cold side (18). A cooling pipe (15), for a cooling fluid, is arranged on the cold side (18) and a heating pipe (16) for a heating fluid, is arranged on the hot side (17). The cooling pipe (15) and the heating pipe (16) are stacked with the thermoelectric module (13) in a stacking direction (19) and form a stack (20). The heat transfer within the stack (20) is improved with at least one of the pipes (15, 16) being curved toward the thermoelectric module (13) at an outer pipe face (26) and with the thermoelectric module (13) curved toward the pipe (15, 16) at an outer module face (27) facing the particular pipe (15, 16).

Abstract: An exhaust system (1) of an internal combustion engine includes an oxidation catalytic converter (2), a particle filter (3), an injector (4) for injecting a reducing agent, a static mixer-evaporator (5), an SCR catalytic converter (6) and a housing (8). The oxidation catalytic converter is upstream of the particle filter and upstream of the SCR catalytic converter. The injector is upstream of the mixer-evaporator and the mixer-evaporator is upstream of the SCR catalytic converter. The housing has a centrally inner channel (9), a ring channel (10) concentrically around the inner channel, an eccentrically outer channel (11), a first deflecting chamber (12) connecting the outer channel with the ring channel and a second deflecting chamber (13) connecting the inner channel with the ring channel. The mixer-evaporator is in the inner channel and the oxidation catalytic converter or particle filter or SCR catalytic converter is ring-shaped and in the ring channel.

Abstract: An exhaust gas treatment device (1) includes a combustion waste gas inlet pipe (2), an outlet pipe, an essentially gas-tight inner housing (7) fluidically connected with the inlet pipe and fluidically connected with the outlet pipe. The inner housing receives a particle filter (4). A connection element (9) is arranged in a connection area (8) of the inner housing. The connection area fluidically faces the outlet pipe (3), for mechanically connecting the particle filter with the inner housing. An oxidation catalytic converter (5) is arranged upstream of the particle filter in the inner housing for catalyzing an oxidation reaction of the combustion waste gas. A counterpressure monitoring point (10, 11, 12) is provided fluidically between the oxidation catalytic converter and the connection element for measuring a counterpressure exerted by the particle filter during the operation of the treatment device. An internal combustion engine (24) is provided with the treatment device.

Abstract: The invention relates to a system for generating anti-noise in an exhaust-gas line (9) of a vehicle, comprising a first electro acoustic transducer (11) for generating a first acoustic signal based on an electric control signal, and being in communication with the exhaust-gas line via an acoustic line (4, 7), with the first acoustic signal entering the exhaust line in form of anti-noise after having passed the acoustic line, a second electro acoustic transducer (13) for generating an electric measurement signal representing a second acoustic signal, and being in acoustic communication with the exhaust-gas line (9) at the anti-noise coupling region, a control unit (21) for generating the control signal based on the measurement signal, and a parameterizing unit (29) for determining a conforming phase parameter and a conforming magnitude parameter for the control function used by the control unit (21) based on the transient response of the control unit.

Abstract: A sound generator system (1, 70), for a vehicle with internal combustion engine (15) and/or electric motor, has an electroacoustical transducer (11) and a control unit (24, 74). Transducer (11) produces an acoustical signal based on an electrical input signal and is connected to an acoustic line. The control unit (24, 74) creates a primary audio signal with frequencies from a given frequency range, to selectively amplify selected segments (“V”) of the primary audio signal so that the audio signal (41) amplified in the selected segments has a section in which all audio signal values correspond to a maximum amplitude value that is specified for the segment, and the audio signal (41) amplified in the selected segments is continuous at transitions from the at least one section to neighboring sections, and wherein the audio signal (41) generated by the control unit (24) forms the basis of the electrical input signal.

Abstract: A sound generator for influencing sound waves propagating in exhaust or intake systems of combustion engine driven vehicles includes: an enclosure having a port opening for communication with an exhaust and/or intake system; a loudspeaker basket supported by the enclosure; a membrane and a permanent magnet supported by the loudspeaker basket; and a voice coil supported by a voice coil carrier. The voice coil is disposed in a constant magnetic field created by the permanent magnet and is connected to the membrane. The membrane is located between the port opening and the permanent magnet. The membrane is funnel-like or dome-like, with the top or top face of the funnel-like membrane or the geometric center of the dome-like membrane facing away from the permanent magnet. An anti-noise system using the sound generator, and a vehicle using the anti-noise system are also provided.

Abstract: The present invention relates to an exhaust gas treatment device (4) and an exhaust system (1) having such an exhaust gas treatment device (4), wherein the exhaust system (1) has at least one exhaust-gas-conducting exhaust gas feed line (2, 3), which is attached to an inlet region (16) of the exhaust gas treatment device (4). Improved mixing of the exhaust gas and a space-saving configuration result if the exhaust gas treatment device (4) has at least one inlet (12, 13) which is open towards the inlet region (16) and if a mixing element (15) is provided, which connects the inlet region (16) to a through-flow region (17) by means of input openings (22, 23), wherein at least one first input opening (22) faces a first side (18) of the inlet region (16) and at least one second input opening (23) faces a second side (19) of the inlet region (16).

Abstract: An exhaust device (2) for an internal combustion engine (3) has an exhaust line (5) with a rear section X with two exhaust pipes (11) connected to an acoustic actuator (12) in a sound-transmitting manner. Better acoustic characteristics and increased number of noises audible from the outside is guaranteed by the exhaust pipes (11) being of different designs and/or by the actuators (12) being able to be actuated individually. A process for controlling the actuators (12) uses a control device (25) that actuates the actuators (12) individually to generate different acoustic signals (23) of the respective actuators (12). A motor vehicle (1) is provided with such an exhaust device (2) with acoustic actuators (12) controlled by such a process. The motor vehicle (1) has additional actuators (29, 31), which are especially associated with an intake line (30) and are arranged in the interior of motor vehicle (1).

Abstract: An exhaust-gas treatment device (1) for an exhaust gas system of an internal combustion engine, in particular of a motor vehicle, includes a housing (2), the jacket (3) of which encloses an accommodating space (5) in the circumferential direction, at least one exhaust-gas treatment element (6), which is arranged in the accommodating space (5), and a bearing layer (7) made of an elastic bearing material, which bearing layer encloses the at least one exhaust-gas treatment element (6) in the circumferential direction and which lies radially against at least one exhaust-gas treatment element (6). An insulating layer (8), made of a thermally insulating, deformation resistant/compression resistant insulating material, encloses the bearing layer (7) in the circumferential direction within the jacket (3).

Abstract: The present invention relates to a component (1) for a motor vehicle (5), particularly an exhaust system, which can be fastened to a carrier (4) of the motor vehicle (5) by means of at least one fixture (3), with a component housing (2) comprising a housing wall (6), wherein the respective fixture (3) comprises at least one holder (8) having an inner leg (9) extending parallel to the housing wall (6) and an outer leg (10) standing away from the housing wall (6) to the outside. The fatigue strength of the fixture (3) can be improved if the housing wall (6) comprises a passage opening (7), through which the outer leg (10) protrudes, while the inner leg (9) areally bears against the housing wall (6) in the interior (11) of the component housing (2).

Abstract: A flexible line element (14), for an exhaust system (4) of an internal combustion engine (1), especially of a motor vehicle, includes a metal bellows (15), which is corrugated in a ring-shaped or helical pattern and through which an exhaust gas stream (8) can flow. The risk of deposition of urea and/or urea derivatives in the metal bellows (15) is reduced by a conical flow guide body (16), through which the exhaust gas stream (8) can flow, and which tapers in the direction of flow of the exhaust gas stream and which protrudes into an inlet area (17) of the metal bellows (15). The flexible line element (14) is combined with the flow guide body (16) integrated therein.

Abstract: A static mixer for the through-mixing of a flow in a line conducting the flow, more preferably of an exhaust system of a combustion engine with several guide vanes. To create adequate through-mixing at low flow velocity and a through-flow resistance that is not too high at high flow velocity, the guide vanes are produced of a shape memory alloy wherein below a predetermined limit temperature the guide vanes have at least one low-temperature shape and above the limit temperature the guide vanes have at least one high-temperature shape, which differs from the low-temperature shape through a reduced through-flow resistance of the mixer.

Abstract: A heat exchanger (28) has a first inlet (29) and a first outlet (30), which are fluidically connected with one another via a first path (31) carrying for a first medium to be cooled. A second inlet (32) and a second outlet (33) are fluidically connected with one another via a second path (34) carrying a second medium. A third inlet (35) and a third outlet (36) are fluidically connected with one another via a third path (37) carrying a third medium. The first path (31) is coupled with the second path (34) and with the third path (37) in a heat-transferring manner and in such as way that the media are separated. The heat-transferring coupling between the first path and the second path takes place upstream of the heat-transferring coupling between the first path and the third path relative to the direction of flow of the first medium.

Abstract: An exhaust system, for a vehicle driven by an internal combustion engine, has a system for removing condensate (141) that includes a first line section (110) for fluid connection with exhaust gas (160), at least one second line section (120) for fluid connection with exhaust gas (160), and at least one suction line (130; 131; 132; 136; 137; 138). The suction line (130; 131; 132; 136; 137; 138) is disposed between the bottom (124) of the at least one second line section (120) and the first line section (110), and includes an opening (135) configured to be passed over by exhaust gas (160) passing through the first line section (110).

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: The present invention relates to an exhaust gas treatment device for an exhaust system of a combustion engine, more preferably of a motor vehicle with a housing comprising a jacket and an outlet funnel, with at least one exhaust gas treatment element which is arranged in the jacket and which via a support ring is axially supported on the housing, wherein the outlet funnel comprises an outer funnel and an inner funnel. A simplified design is obtained if the outer funnel at an inner end facing the jacket is connected to the jacket in a fixed manner and at an outer end facing away from the jacket is connected in a fixed manner to the inner funnel, and if between the inner funnel and the outer funnel an insulation space circumferentially running in circumferential direction is formed and the inner funnel at an inner end facing the jacket carries the support ring and relative to the outer funnel is at least axially loose.

Abstract: 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 active sound absorber (3) for an exhaust system (1) of an internal combustion engine, preferably of a motor vehicle, comprising a housing (7), a connecting pipe (8) for the acoustic and fluidic connecting of the housing (7) with the exhaust system (1), an active membrane (10) which in the housing (7) separates a front volume (12), fluidically connected with the connecting pipe (8), from a back volume (13), and an actuator (11) for vibration stimulation of the active membrane (10). A risk of damage by condensate in the back volume (13) can be reduced by at least one condensation line (14), which fluidically connects the back volume (13) with the front volume (12), in which vapor contained in the exhaust gas condenses, and which directs the condensate which occurs to the front volume (12).