Acoustic resonator of an air distribution system and air distribution system

Abstract

Acoustic resonator (10), combined with a flow channel (30) of an air guidance system (100), comprising at least one resonator channel (12, 13) with at least one inlet opening (14, 15) and at least one outlet opening (16, 17), wherein the outlet opening (16, 17) is connected to at least one resonator chamber (18, 19) of the air guidance system (100), wherein the resonator channel (12, 13) is integrally formed with the flow channel (30), wherein the air guidance system (100) has at least two damping chambers (50, 54, 58) for acoustic damping of the flowing air, wherein the air guidance system (100) is designed as a broadband damper, wherein the resonator chamber (18, 19) is arranged between two damping chambers (50, 54, 58), wherein the inlet opening (14, 15) of the resonator channel (12, 13) is arranged in the area of ​​the damping chamber (50, 54, 58) which is forward or rear in the direction of flow and is connected to the flow channel (30).

Description

Technical FieldThe invention relates to an acoustic resonator and an air guidance system with an acoustic resonator, in particular an air guidance of an internal combustion engine of a motor vehicle.Prior ArtDE 10 2012 000 806 A1 discloses a resonator system for a gas inlet system of a motor, having a housing and an insert part, wherein the housing is designed in such a way that its inner part is designed as a cavity, wherein an opening is provided at a first end of the housing, through which opening the insert part can be inserted positively into the cavity of the housing, such that at least one resonator space is formed within the housing.EP 2 009 272 A2 discloses an intake manifold for an internal combustion engine comprising a resonator including a resonator body member attached to an outer surface of the intake manifold body, the resonator body member cooperating with the outer surface of the intake manifold body and defining a space inside the resonator.From US 2005 / 0 252 716 A1 a resonator for an air inlet system of an internal combustion engine is known, which resonator has a housing, an upstream air duct, a downstream air duct, a pipe, a partition wall and a pipe sleeve, wherein the pipe extends through the housing and connects the upstream air duct and the downstream air duct.JP 2002-303117 A discloses a silencer for an internal combustion engine, which silencer is intended to reduce noise with a low frequency even in the case of a small volume. This silencer consists of a resonance duct which opens into an exhaust duct from the internal combustion engine and opens at one end to a resonance chamber.DE 196 18 432 A1 discloses an intake device in which the intake pipe in the damper volume can be opened in a simple manner by means of a pipe diverter. Due to the sound propagation in the volume, a Helmholtz resonator defined by the volume size is effective, which promotes the propagation of a specific sound frequency range and attenuates another range. By connecting a branch pipe (interference pipe) in parallel, sound frequencies determined due to interference can be selectively attenuated depending on the length of the branch pipe.With the arrangement of an additional duct, the damping volume can be connected to the air filter volume over a large area, so that this direct coupling results in an addition of the damping volume with the air filter volume, which also acts in a damping manner. The so-called Helmholtz resonance is determined by this volume sum and is correspondingly low-frequency, which leads to noise attenuation in the lower rotational speed range of the internal combustion engine.Disclosure of the InventionAn object of the invention is to create an acoustic resonator of an air guidance system which can be designed flexibly and integrated cost-effectively.A further object is to provide an air guidance system with an acoustic resonator which can be designed flexibly and can be integrated cost-effectively.The aforementioned object is achieved with an acoustic resonator, combined with a flow channel of an air guidance system, comprising at least one resonator channel with at least one inlet opening and at least one outlet opening, wherein the inlet opening is connected to the flow channel, and wherein the outlet opening is connected to at least one resonator chamber of the air guidance system, wherein the resonator channel is formed on the flow channel.The further object is achieved with an air guidance system having an acoustic resonator, wherein the resonator is combined with a flow channel, comprising at least one resonator channel having at least one inlet opening and at least one outlet opening, wherein the inlet opening is connected to the flow channel, and wherein the outlet opening is connected to at least one resonator chamber of the air guidance system, wherein the resonator channel is formed on the flow channel.The acoustic resonator or the air guidance system can be arranged on the raw air side and / or the clean air side of an air supply of an internal combustion engine, wherein "clean air side" denotes the flow area downstream of an air cleaning device, in particular an air filter, and "raw air side" denotes the flow area upstream of the air cleaning device, accordingly.Advantageous embodiments and advantages of the invention are evident from the further claims, the description and the drawing.An acoustic resonator is proposed which is combined with a flow channel of an air guidance system, comprising at least one resonator channel with at least one inlet opening and at least one outlet opening. The inlet opening is in communication with the flow channel and the outlet opening is in communication with at least one resonator chamber of the air guidance system, wherein the resonator channel is formed on the flow channel.By the connection between the inlet opening and the flow channel or outlet opening and resonator chamber, gas exchange can take place between them or pressure vibration can be transmitted between them. The proposed acoustic resonator can be used in particular advantageously in an air guidance system of an air guidance system of an internal combustion engine. The internal combustion engine may be an intake engine or a boosted engine, for example boosted by a turbocharger or a compressor. Such an air guidance system is usually designed as a wide-band damper in order to damp high-frequency components of oscillations that are caused by the supercharger. With the suggested resonator, for example, low-frequency components of oscillations of the air column on the clean air side can be attenuated, which are usually attenuated on the raw air side or in an additional resonator. With the suggested resonator, an additional component can be dispensed with, since the resonator can be united cost-effectively with a flow channel of the air guidance system. Such air guidance systems are usually designed as plastic components, so that demolding of the individual components can be carried out favorably when the resonator is integrated into the flow channel.Sucked-in air can thus pass through the inlet opening of the resonator channel and be guided into the resonator chamber arranged outside the flow channel. Pressure oscillations in the air are conducted in this resonator channel to the outlet opening into the resonator chamber. By suitably designing the geometric dimensions of the components, specific frequencies of resonant oscillations can be excited and thus attenuated in the charge air column.In particular, a chamber of a broadband damper can be used advantageously as a resonator, which is supplied with a longer resonator channel. In conventional embodiments, chambers of a broadband damper are mainly designed with a hole pattern for broadband acoustic measures. Chambers are also used individually as resonators having a very short resonator channel length, since an extension of this channel length is limited by the subsequent proximity to an outer wall of a housing. The solution which is advantageous from the standpoint of mould release and is described here makes it possible to provide a longer channel length for the resonator in order thereby to damp other frequency ranges. Frequencies which up to now could only be attenuated in a targeted manner by an additional resonator located outside the broadband damper can also be attenuated within a broadband damper by the acoustic resonator according to the invention.Advantageously, the resonator channel can be formed directly on the flow channel. Particularly advantageously, the resonator channel is formed onto the flow channel substantially over its entire length, in particular in the longitudinal direction. In a preferred embodiment, the flow channel and the resonator channel share a common wall section. In this way, the resonator channel can be combined with the flow channel in a compact manner or in a manner favorable for installation space and at the same time can be produced cost-effectively, since demolding of the flow channel can take place in a favorable manner in an injection molding process, with the result that no additional assembly step of the resonator channel is required.According to an advantageous embodiment, the at least one resonator chamber can be formed between the flow channel and a housing wall of a housing of the air guidance system. In this way, the installation space present within the housing of the air guidance system can be exploited favorably. At the same time, it is possible to design the entire air guidance system with a favourable installation space, since the resonator chamber can thus be designed compact in terms of installation space.According to the invention, the air guidance system is designed as a wide-band damper in order to damp high-frequency components of oscillations which are caused by the turbocharger. With the resonator proposed, it is additionally possible to damp further, for example low-frequency, portions of oscillations of the air column on the clean air side, which oscillations are usually damped on the raw air side of the drawn-in air. This makes it possible to effectively dampen a wide high-frequency frequency range of the oscillations of the air column.According to the invention, the air guidance system has at least two damping chambers for acoustic damping of the flowing air, which is formed between the flow channel and the housing wall. An outer wall of the flow channel in the region of the damping chamber can have a plurality of openings which are in communication with the damping chamber. Through the openings, chambers between the flow channel and the outer wall of the housing of the air guidance system can be advantageously utilized as a damping chamber, with a simultaneously compact design of the sucked-in air.According to an advantageous embodiment, the openings of different damping chambers can have different cross sections. The openings can have different cross sections in order to effectively dampen a broad frequency band of the acoustic oscillations.According to an advantageous embodiment, the outlet opening of the resonator channel can be arranged between the resonator chamber and an adjoining damping chamber and / or between two resonator chambers and / or on a partition wall between the resonator chamber and an adjoining damping chamber. This allows a stable arrangement of the resonator channel and also a space-saving accommodation in the resonator chamber of the air guidance system. The length of the space available in the air guidance system can also be used advantageously.According to an embodiment not according to the invention, the resonator chamber can be arranged in front of one or more damping chambers. In this way, both the low-frequency components of the oscillating air column can be attenuated and the high-frequency components can be attenuated. The flow channel can also be advantageously demolded after an injection molding process with the integrated resonator channel.According to the invention, the resonator chamber is arranged between two damping chambers. An alternative arrangement, not according to the invention, provides the arrangement with an attenuation chamber in front of and behind the resonator chamber. As a result, a greater length of the resonator channel can be realized in the air guidance system, as a result of which further specific frequencies or frequency ranges can be filtered out in a targeted manner.According to an advantageous embodiment, the inlet opening of the resonator channel can be arranged in the front damping chamber in the flow direction. A reverse sequence is likewise possible, since the direction of flow plays only a subordinate role acoustically. In this way, too, a resonator channel that is as long as possible can be accommodated in the air guidance system, as a result of which further specific frequencies or frequency ranges can be filtered out in a targeted manner.According to an advantageous embodiment, the acoustic resonator can comprise at least two resonator channels, wherein an outlet opening can be arranged in one, for example the outer, resonator chamber and an outlet opening can be arranged in the adjacent, for example the next inner, resonator chamber. In this way, it is possible to design the acoustic resonator to two different frequency ranges, since one resonator channel can have a greater length than the other resonator channel. The resonator channel with the greater length can therefore attenuate different frequencies or frequency ranges than the other resonator channel.According to an advantageous embodiment, the resonator channel can be formed by the outer wall of the flow channel and the housing wall. A further advantageous embodiment provides that the resonator channel is bounded on one side by the outer wall of the flow channel and on the other side by the housing wall. In this way, a particularly favorable configuration of the components flow channel and housing with respect to demolding can be achieved in an injection molding process.According to an advantageous embodiment, a cover of the resonator channel can be designed as a separate component. As a result, an open resonator channel can be formed on the flow channel, which is subsequently closed with a separate cover in a further working step. This makes it possible to further simplify the demolding of the flow channel with the resonator channel formed on.According to an advantageous embodiment, the resonator channel can be arranged in the interior of the flow channel. In this way, the flow duct can be designed as compact as possible, so that the air guidance system can be accommodated in an engine compartment in a manner favorable for installation space. Also, demolding of the flow channel after an injection molding process can be made so simple.According to a further aspect of the invention, an air guidance system, in particular an air guidance system of a turbo-charged internal combustion engine, is proposed, having an acoustic resonator, wherein the resonator is combined with a flow channel. The air guidance system comprises at least one resonator channel with at least one inlet opening and at least one outlet opening. The inlet opening is in communication with the flow channel and the outlet opening is in communication with at least one resonator chamber of the air guidance system.The proposed air guidance system can have an integrated acoustic resonator and can thus be used in particular advantageously as part of an air guidance of a turbo-charged internal combustion engine. Such an air guidance system is usually designed as a wide-band damper in order to damp high-frequency components of oscillations that are caused by the turbocharger. With the resonator proposed, it is additionally possible, for example, to damp low-frequency components of oscillations of the air column on the clean air side, which oscillations are usually damped on the raw air side of the air duct. With the suggested resonator, an additional component can be dispensed with, since the resonator can be united cost-effectively with a flow channel of the air guidance system. Such an air guidance system is advantageously designed as a plastic component, so that demolding of the individual components can be carried out favorably when the resonator is integrated into the flow channel.According to an advantageous embodiment, the at least one resonator chamber can be formed between the flow channel and a housing wall of a housing of the air guidance system. In this way, the installation space present within the housing of the air guidance system can be exploited favorably. At the same time, it is possible to design the entire air guidance system with a favourable installation space, since the resonator chamber can thus be designed compact in terms of installation space.According to the invention, the air guidance system is designed as a broad-band damper and comprises at least two damping chambers for acoustically damping the flowing air, which damping chambers are formed between the flow channel and the housing wall. An outer wall of the flow channel in the region of the damping chamber can have a plurality of openings which are in communication with the damping chamber.With the resonator proposed, low-frequency and / or also high-frequency components of oscillations of the air column, which can be caused, for example, by a supercharger, can be damped on the clean air side, which are usually damped on the raw air side of the drawn-in air. This makes it possible to effectively dampen a broad frequency range of the oscillations of the air column.Brief Description of the DrawingsFurther advantages are evident from the following description of the drawings. Exemplary embodiments of the invention are illustrated in the drawings. The drawings, specification and claims contain numerous features in combination. The skilled person will expediently also consider the features individually and summarize them to form meaningful further combinations.The following are shown by way of example: FIG. 1 is a partially cut isometric view of an air handling system according to a non-inventive embodiment of the invention having an acoustic resonator and three broad band attenuation chambers; FIG. 2 is an isometric view of the air guidance system according to FIG. 1 not according to the invention, with the housing closed; FIG. 3 shows a longitudinal section through the air guidance system according to FIG. 1 not according to the invention; FIG. 4 is a cross-section through the air guidance system according to FIG. 1 not according to the invention; FIG. 5 shows a further cross section through the air guidance system according to FIG. 1 not according to the invention; FIG. 6 is a fragmentary isometric view of an air handling system according to an embodiment of the invention having an acoustic resonator and three broad band attenuation chambers; FIG. 7 is a partially cut isometric view of an air duct system not according to the invention, having two acoustic resonators, two resonator channels to the resonators and two broad band attenuation chambers; FIG. 8 shows a longitudinal section through the air guidance system according to FIG. 7 not according to the invention; FIG. 9 shows a cross section through the air guidance system according to FIG. 7 not according to the invention; FIG. 10 shows a further cross section through the air guidance system according to FIG. 7 not according to the invention; FIG. 11 is a cross-sectional isometric view of an air handling system according to another embodiment of the invention; FIG. 12 is a cross-sectional isometric view of an air handling system according to another embodiment of the invention; and FIG. 13 shows a sectioned isometric illustration of a flow duct of an air guidance system according to a further embodiment of the invention.Embodiments of the InventionIn the figures, identical or similar components are denoted by identical reference numerals. The figures merely show examples and should not be understood as limiting.FIG. 1 shows a partially cut isometric view of an air guidance system 100 according to an embodiment of the invention having an acoustic resonator 10 and three broadband damping chambers 50, 54, 58. The air guidance system 100 has a flow channel 30 which is divided into four different sections and is surrounded by a housing 38 having a housing upper part 40 and a housing lower part 42. The flow channel 30 is led out of the housing 38 in a sealed manner at its ends with the inlet 32 and the outlet 34.In this example, the air guidance system 100 has, at the rear end in the flow direction (marked with the arrow at the inlet 32), the resonator chamber 18 and the damping chambers 50, 54, 58, which are separated from one another by the tight separating walls 62, 64, 66 in order to bring about acoustic decoupling. The damping chambers 50, 54, 58 for acoustically damping the flowing air are formed between the flow channel 30 and the housing wall 38, wherein an outer wall 36 of the flow channel 30 in the region of the damping chamber 50, 54, 58 has a plurality of openings 52, 56, 60 which are in communication with the damping chamber 50, 54, 58. The openings 52, 56, 60 of different damping chambers 50, 54, 58 have different diameters in order to be able to damp different frequency ranges of the flowing air. The air guidance system 100 is thus designed as a wide-band damper.The resonator chamber 18 is formed between the flow channel 30 and the housing wall 44 of the housing 38 of the air guidance system 100.The acoustic resonator 10 is united with the flow channel 30 of the air guidance system 100. The resonator 10 comprises the resonator channel 12 with the inlet opening 14 and the outlet opening 16. the inlet opening 14 is in communication with the flow channel 30 and the outlet opening 16 is in communication with the resonator chamber 18 of the air guidance system 100.Resonator channel 12 is formed directly on flow channel 30. The outlet opening 16 of the resonator channel 12 is arranged on the partition wall 62 between the resonator chamber 18 and the adjoining damping chamber 50, in order to thus utilize the maximum possible length of the resonator channel 12.The air flow enters the air guidance system 100 in the direction of the arrow. The air flow can thus reach the inlet opening 14 and the pressure oscillations can reach the outlet opening 16 through the resonator channel 12. From there, the oscillations continue into the free space of the resonator chamber 18. As a result, the resonance effect of the acoustic resonator 10 can be brought to bear, in order to thus bring about a damping of the low-frequency and / or high-frequency components of the acoustic oscillations of the oscillating air column.FIG. 2 shows an isometric view of the air guidance system 100 according to FIG. 1 with the housing 38 closed, while FIG. 3 shows a longitudinal section through the air guidance system 100 according to FIG. 1. FIGS. 4 and 5 show two cross sections at different depths through the air guidance system 100 according to FIG. 1.FIG. 2 shows the two housing halves, namely the upper housing part 40 and the lower housing part 42, which can be joined together, for example welded or bonded, at the circumferential joining line. Optionally, the housing can also be designed, for example, as a cylinder and / or be joined together, for example, from two housing halves in the axial direction.FIG. 3 clearly shows the sequence of the resonator chamber 18 and of the three damping chambers 50, 54, 58, which each have openings 52, 56, 60 of different diameters in the flow channel 30. The damping chambers 50, 54, 58 are acoustically separated by the separating walls 62, 64, 66. The partitions 62, 64, 66 connect the flow channel 30 to the wall 44 of the housing 38 and contribute to stiffening the entire housing 38 and the air handling system 100. The outlet 34 is concealed in FIG. 3.FIG. 4 shows a cross section of the air guidance system 100 of the resonator channel 12 in the region of the outlet opening 16, through which the oscillating air is connected to the resonator chamber 18. FIG. 5 shows the resonator channel 12 in section between the inlet opening 14 and the outlet opening 16.It can also be clearly seen in FIGS. 3, 4 and 5 that the resonator channel 12 with the inlet opening 14 and the outlet opening 16 is formed directly on the flow channel 12 and is thus formed integrally therewith.FIGS. 6, 7, 8, 9, 10, 11, 12 to 13 show further embodiments. In order to avoid unnecessary repetitions, only the differences from the first embodiment will be discussed in the description.FIG. 6 shows a partially cut isometric view of an air guidance system 100 according to a further embodiment of the invention with an acoustic resonator 10 and three broadband damping chambers 50, 54, 58 In this exemplary embodiment, the resonator chamber 18 is arranged between the two damping chambers 50, 54. The inlet opening 14 of the resonator channel 12 is arranged in the region of the damping chamber 50 and extends along this damping chamber 50. The outlet opening 16 of the resonator channel 12 is arranged on the partition 64 to the next damping chamber 54. In this way, a longer resonator channel 12 can be realized, whereby it is possible to dampen further frequencies or frequency ranges of the oscillating air column of the air guidance system 100.FIG. 7 shows a partially cut isometric view of an air guidance system 100 according to a further embodiment of the invention with two acoustic resonators 10, 11 with two resonator channels 12, 13 and two broadband damping chambers 54, 58. Both resonator channels 12, 13 are formed parallel next to one another on the flow channel 30. Both inlet openings 14, 15 are arranged at the beginning of the outer resonator chamber 18. The outlet opening 16 of the first resonator channel 12 is arranged in the outer resonator chamber 18, while the outlet opening 17 of the second resonator channel 13 is arranged in the next inner resonator chamber 19. As a result, it is possible to make the length of the second resonator channel 13 substantially longer, so that two frequency ranges of the air flow in the air guidance system 100 can be attenuated.FIG. 8 shows a longitudinal section through the air guidance system 100 according to FIG. 7, so that the sequence of the two resonator chambers 18 and 19 and of the two damping chambers 54 and 58 of the broadband damper can be seen.Furthermore, FIGS. 9 and 10 show two cross sections at different depths through the air guidance system 100 according to FIG. 7. In FIG. 9, the second resonator channel 13 of the second resonator 11 is cut in its course. The outlet opening 16 of the first resonator channel 12 of the first resonator 10 into the first resonator chamber 16 is shown in section. In FIG. 10, both resonator channels 12 and 13 are cut in their course.FIG. 11 shows a sectioned isometric view of an air guidance system 100 according to a further embodiment of the invention. In this exemplary embodiment, resonator channel 12 is formed by outer wall 36 of flow channel 30 and housing wall 44 of housing 38 of air guidance system 100. For this purpose, the resonator channel 12 is formed as an open channel with a U-shaped cross section on the flow channel 30. Furthermore, the outer wall 44 of the housing 38 is deep-drawn radially from the outside at the position of the resonator channel 12, so that the wall 44 closes the resonator channel 12 in the form of a cover 20. In this way, a sealed resonator channel 12 can be realized if the cover is sealed, for example welded or glued, to the U-shaped part of the resonator channel 12.FIG. 12 shows a sectioned isometric illustration of an air guidance system 100 according to a further embodiment of the invention. In this exemplary embodiment, a cover 20 of the resonator channel 12 is designed as a separate component. The resonator channel 12 is also formed as an open channel with a U-shaped cross section on the flow channel 30. Furthermore, the wall 36 of the flow channel 30 is partially retracted toward the interior of the flow channel 30 at the underside of the resonator channel 12 and thus forms an inlet opening 14 of the resonator channel 12 into the interior of the flow channel 30. A separately produced cover 20 is placed on the open side of the resonator channel 12 and is tightly connected thereto, for example welded or glued. In this way, too, it is possible to realize a dense resonator channel 12.FIG. 13 shows a sectioned isometric illustration of a flow duct 30 of an air guidance system 100 according to a further embodiment of the invention. In this case, the resonator channel 12 is arranged in the interior of the flow channel 30. Resonator channel 12 is also formed onto flow channel 30, but from its inside. On its front side, the resonator channel 12 has the inlet opening 14 for the entry of the flowing air from the interior of the flow channel 30. The resonator channel 12 opens into an opening in the wall of the flow channel 30, which opens into the outer resonator chamber 18 as an outlet opening 16.

Claims

Acoustic resonator (10), combined with a flow duct (30) of an air guidance system (100), comprising at least one resonator duct (12, 13) having at least one inlet opening (14, 15) and at least one outlet opening (16, 17), and wherein the outlet opening (16, 17) is in communication with at least one resonator chamber (18, 19) of the air guidance system (100), wherein the resonator duct (12, 13) is formed on the flow duct (30), wherein the air guidance system (100) has at least two damping chambers (50, 54, 58) for acoustically damping the flowing air, wherein the air guidance system (100) is designed as a broadband damper, wherein the resonator chamber (18, 19) is arranged between two damping chambers (50, 54, 58), wherein the inlet opening (14, 15) of the resonator duct (12, 13) is arranged in the region of the front or rear damping chamber (50, 54, 54, 58) in the flow direction, 58) and is in communication with the flow channel (30).Acoustic resonator (10) according to claim 1, wherein the at least one resonator chamber (18, 19) is formed between the flow channel (30) and a housing wall (44) of a housing (38) of the air guidance system (100).Acoustic resonator (10) according to claim 1 or 2, wherein the damping chambers (50, 54, 58) are formed between the flow channel (30) and the housing wall (38), wherein an outer wall (36) of the flow channel (30) in the region of the damping chamber (50, 54, 58) has a plurality of openings (52, 56, 60) which are in communication with the damping chamber (50, 54, 58).Acoustic resonator (10) according to claim 3, wherein the openings (52, 56, 60) of different attenuation chambers (50, 54, 58) have different cross sections.Acoustic resonator (10) according to one of claims 1 to 4, wherein the outlet opening (16, 17) of the resonator channel (12, 13) opens into a resonator chamber (18, 19) and is arranged between a partition wall to an adjacent damping chamber (50, 54, 58) and / or adjacent resonator chamber (18, 19) and / or the housing wall (44) of a housing (38).Acoustic resonator (10) according to one of claims 1 to 4, wherein the outlet opening (16, 17) of the resonator channel (12, 13) opens into a resonator chamber (18, 19), wherein the outlet opening (16, 17) is arranged on a partition wall (62, 64, 66) between the resonator chamber (18) and an adjoining damping chamber (50, 54, 58).Acoustic resonator (10) according to one of claims 1 to 6, comprising two resonator channels (12, 13), wherein an outlet opening (16) is arranged in an outer resonator chamber (18) and an outlet opening (17) is arranged in the next inner resonator chamber (19).Acoustic resonator (10) according to one of claims 1 to 7, wherein the resonator channel (12, 13) is formed by the outer wall (36) of the flow channel (30) and the housing wall (44).Acoustic resonator (10) according to one of Claims 1 to 7, wherein a cover (20) of the resonator channel (12, 13) is designed as a separate component.Acoustic resonator (10) according to one of claims 1 to 7, wherein the resonator channel (12, 13) is arranged inside the flow channel (30).Acoustic resonator (10) according to one of the preceding claims, wherein the resonator channel (12, 13) is formed on the flow channel (30) substantially over its entire length, in particular in the longitudinal direction.Air guidance system (100), in particular air guidance of an internal combustion engine, having an acoustic resonator (10) according to one of the preceding claims, wherein the resonator (10) is integrated into a flow duct (30), comprising at least one resonator duct (12, 13) having at least one inlet opening (14, 15) and at least one outlet opening (16, 17), wherein the inlet opening (14, 15) is connected to the flow duct (30), and wherein the outlet opening (16, 17) is connected to at least one resonator chamber (18, 19) of the air guidance system (100), wherein the resonator duct (12, 13) is formed on the flow duct (30).

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