High-position air inlet channel, air inlet system and vehicle

Abstract

The utility model discloses a high-position air inlet channel, an air inlet system and a vehicle. The high-position air inlet channel comprises an air inlet channel shell and a resonance shell, an air inlet and an air outlet are formed in the air inlet channel shell, the air inlet and the air outlet are communicated to form an airflow channel, and the air inlet and the air outlet face different directions; the resonance shell is connected to the air inlet channel shell and located at the corner of the air inlet channel shell, a resonant cavity is formed in the resonance shell, and the resonant cavity is connected with the airflow channel through a pipeline; wherein the resonant cavity has a preset resonant frequency, and the preset resonant frequency and the frequency of the air inlet channel are suitable for resonance noise elimination. Not only can the silencing function of the engine under the specific frequency be realized, but also the increase of weight cost caused by an external connection structure can be saved, so that the high-position air inlet channel is more attractive.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a high-position air intake duct, an air intake system and a vehicle. Background Art

[0002] The air intake duct assembly is an important part of the air intake system of vehicles such as trucks and filter trucks. In the air intake system, it is responsible for guiding the intake air, pre-filtering dust and moisture, providing relatively clean air for the air assembly, and at the same time reducing the intake noise.

[0003] In the prior art, when the vehicle is idling, the intake noise of the high-position air intake duct exceeds the standard. And the internal structure of the current high-position air intake duct is a large integral cavity, with relatively small intake resistance and little contribution to the intake transmission loss. In addition, most of the noise reduction of the previous vehicle air intake systems was achieved by borrowing external structures. However, the method of using a designed external structure to reduce noise will increase the weight and cost of the high-position air intake duct, affecting the overall layout and aesthetics of the high-position air intake duct. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, the first object of the utility model is to propose a high-position air intake duct, which can not only achieve the noise reduction function at a specific frequency of the engine, but also save the increase in weight and cost brought by the external structure, making the high-position air intake duct more aesthetic.

[0005] The second object of the utility model is to propose an air intake system.

[0006] The third object of the utility model is to propose a vehicle.

[0007] To achieve the above object, the high-position air intake duct proposed in the first aspect embodiment of the utility model includes: an air intake duct housing, an air inlet and an air outlet are provided on the air intake duct housing, the air inlet and the air outlet are communicated to form an air flow channel, and the air inlet and the air outlet face different directions; a resonance housing, the resonance housing is connected to the air intake duct housing and is located at the corner of the air intake duct housing, a resonance cavity is provided inside the resonance housing, and the resonance cavity and the air flow channel are connected by a pipeline; wherein, the resonance cavity has a predetermined resonance frequency, and the predetermined resonance frequency and the intake channel frequency are suitable for resonance noise reduction.

[0008] The high-position air intake duct proposed according to the embodiments of the present utility model combines the principle of a muffler. By adding a resonance cavity structure in the body of the high-position air intake duct, and the resonance cavity has a predetermined resonance frequency, and the predetermined resonance frequency and the air intake channel frequency are suitable for resonance muffling, so as to be able to achieve the muffling function at a specific frequency of the engine. The resonance housing is arranged at the corner of the air intake duct housing, and the air intake duct housing is connected to the resonance housing. Moreover, the resonance cavity and the air flow channel are connected by a pipeline, which can avoid problems such as space tension and inconvenient layout caused by using external structures, and can also save the increase in weight cost brought by external structures. By reasonably designing the overall shape of the high-position air intake duct, both the muffling effect and the aesthetics of the high-position air intake duct are ensured.

[0009] In some embodiments of the present utility model, a connecting rib is connected between the resonance housing and the air intake duct housing, and the connecting rib separates the air flow channel and the resonance cavity.

[0010] In some embodiments of the present utility model, the air intake duct housing, the resonance housing, the pipeline and the connecting rib are integrally formed and connected.

[0011] In some embodiments of the present utility model, an air intake grille is provided at the air intake; wherein, the air intake grille includes: a plurality of grille plates, the plurality of grille plates are parallel to each other and are all inclined relative to the air intake direction so that the projection in the air intake direction covers the air intake; a plurality of connecting plates, the grille plates and the connecting plates extend perpendicular to each other, and the connecting plates are connected to the plurality of grille plates.

[0012] In some embodiments of the present utility model, the high-position air intake duct further includes: a dust and water discharge valve, the dust and water discharge valve is adjacent to the air outlet and communicates with the air flow channel, and the dust and water discharge valve is used to discharge impurities in the air flow channel.

[0013] In some embodiments of the present utility model, a reinforcing groove is formed on the outer surface of the air intake duct housing, the reinforcing groove is located on the side of the air intake duct housing adjacent to the air outlet, and a reinforcing protrusion is formed on the inner surface of the air intake duct housing at a position corresponding to the reinforcing groove.

[0014] In some embodiments of the present utility model, the pipeline is cylindrical, the inner diameter of the pipeline is 24 mm to 26 mm, the length of the pipeline is 24 mm to 25 mm, and the volume of the cavity of the resonance cavity is 0.5 L to 1.5 L.

[0015] In some embodiments of the present utility model, the thickness of the intake duct housing is 3 mm to 4 mm, the width of the air inlet along the first direction is 120 mm to 130 mm, and the height of the air inlet along the second direction perpendicular to the first direction is 820 mm to 830 mm; the cross-sectional area of the air inlet is 0.10 m² to 0.11 m², and the cross-sectional area of the air outlet is not greater than 0.1 m².

[0016] To achieve the above object, a second aspect embodiment of the present utility model provides an intake system, including the high-position intake duct described in any one of the above.

[0017] According to the intake system provided by the embodiments of the present utility model, by adopting the high-position intake duct of any one of the above embodiments, a resonance cavity structure is added above the body of the high-position intake duct, and in combination with the principle of a muffler, the muffling function at a specific frequency of the engine can be achieved. Moreover, by reasonably designing the overall shape of the high-position intake duct, the overall space of the intake system can be saved, facilitating space layout, and the problem of increasing the weight cost of the intake system caused by adopting an external structure can also be avoided, ensuring both the muffling effect of the intake system and the overall aesthetics of the intake system.

[0018] To achieve the above object, a vehicle provided by a third aspect embodiment of the present utility model includes a vehicle body and the intake system described in the second aspect embodiment above, and the intake system is disposed on the vehicle body.

[0019] According to the vehicle provided by the embodiments of the present utility model, by adopting the intake system of the second aspect embodiment above, the high-position intake duct structure is improved under the existing vehicle boundary, and a resonance cavity structure is added, without increasing the cost of the vehicle, and the muffling function at a specific frequency of the engine can also be achieved, enhancing the overall muffling performance of the vehicle and improving the driving experience of users.

[0020] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0022] Figure 1 is a sectional view of a high-position intake duct according to an embodiment of the present utility model;

[0023] Figure 2 is a relationship diagram of engine order frequency and decibels according to an embodiment of the present utility model;

[0024] Figure 3Schematic diagram of a Helmholtz resonance muffler according to an embodiment of the present utility model;

[0025] Figure 4 Magnified view of decibels when the engine order frequency is 180 Hz according to an embodiment of the present utility model;

[0026] Figure 5 Side view of the high-position intake duct according to an embodiment of the present utility model;

[0027] Figure 6 Block diagram of an intake system according to an embodiment of the present utility model;

[0028] Figure 7 Block diagram of a vehicle according to an embodiment of the present utility model.

[0029] Reference numerals:

[0030] Vehicle 1000;

[0031] Intake system 100;

[0032] High-position intake duct 10

[0033] Intake duct housing 1, resonance housing 2, intake port 3, outlet port 4, air flow channel 5, resonance cavity 6, pipeline 7, connecting rib 8, dust and drainage valve 9;

[0034] Reinforcing protrusion 11, intake grille 31;

[0035] Grille plate 311, connecting plate 312. Detailed implementation manners

[0036] The embodiments of the present utility model will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model will be described in detail below.

[0037] In the prior art, considering the waterproof structure and intake resistance, the internal cavity of the high-position intake duct is usually designed to have an inverted U-shaped structure. The air flow channel of this structure is relatively smooth, but the disadvantage of this structural design is that the intake transmission loss is small and the intake noise cannot be eliminated, resulting in a large noise at the intake port of the high-position intake duct. And the intake aerodynamic noise is the main noise source of the intake system. Among them, the noise generated by the engine can be understood according to formula (1-1), where f1 is the frequency of the intake aerodynamic noise, n is the engine speed, z is the number of engine cylinders, i is the stroke coefficient of the engine, for example, the stroke coefficient of a four-stroke engine is 2, and k is the harmonic order number, and this harmonic order number is the order number.

[0038]

[0039] For example, the idle speed n of the engine developed and matched with the present utility model is 550 rpm. In this case, the transmission loss value of the intake system at the engine order frequency of 180 Hz is slightly lower. The object of the present utility model is to improve the noise at the high-position intake port by adding a resonance cavity design to the high-position intake duct, and aims to solve the transmission loss value of the intake system at the engine order frequency of 180 Hz. The following refers to Figures 1 - 5 Describe the high-position intake duct according to an embodiment of the present utility model.

[0040] Such as Figure 1 As shown, it is a sectional view of a high-position intake duct according to an embodiment of the present utility model. Among them, the high-position intake duct 10 includes an intake duct housing 1 and a resonance housing 2.

[0041] An air inlet 3 and an air outlet 4 are provided on the intake duct housing 1. The air inlet 3 and the air outlet 4 are connected to form an air flow channel 5, and the air inlet 3 and the air outlet 4 face different directions. Among them, considering the waterproofness of the intake duct housing 1 and the air flow channel 5 and the intake resistance, in the embodiment of the present utility model, the air inlet 3 and the air outlet 4 can be set to face perpendicular to each other, then the air inlet 3 and the air outlet 4 are connected to form an "L"-shaped air flow channel 5. The gas flow resistance in the air flow channel 5 of this shape is small and more smooth, and there is a corner on the intake duct housing 1.

[0042] In some embodiments of the present utility model, the thickness of the intake duct housing 1 can be set to 3 mm to 4 mm, the width of the air inlet 3 in the first direction is 120 mm to 130 mm, and the height of the air inlet 3 in the second direction perpendicular to the first direction is 820 mm to 830 mm; the cross-sectional area of the air inlet 3 is 0.10 ㎡ to 0.11 ㎡, and the cross-sectional area of the air outlet 4 is not greater than 0.1 ㎡. Among them, the thickness of the intake duct housing 1, the width of the air inlet 3 in the first direction, the height of the air inlet 3 in the second direction, the cross-sectional area of the air inlet 3, and the cross-sectional area of the air outlet 4, etc. may not be specifically limited here. For example, in the embodiment of the present utility model, the thickness of the intake duct housing 1 can be set to 3.5 mm.

[0043] Furthermore, the shape of the air inlet 3 can be oval or rounded rectangle, etc., and the shape of the air outlet 4 can be oval or circular, etc., rounded rectangle or circular, etc. Taking the shape of the air inlet 3 as a rounded rectangle and the shape of the air outlet 4 as an oval as an example, the width of the air inlet 3 can be set to 128 mm, the height can be set to 829 mm, the cross-sectional area of the air inlet 3 can be 0.106 ㎡, and the cross-sectional area of the air outlet 4 can be set to 0.033 ㎡.

[0044] In some embodiments, the resonance housing 2 is connected to the intake duct housing 1 and is located at the corner of the intake duct housing 1. The resonance housing 2 has a resonance cavity 6 inside. The resonance cavity 6 and the air flow channel 5 are connected by a pipeline 7, and this pipeline 7 is the inlet of the resonance cavity 6. Specifically, a connecting rib 8 is connected between the resonance housing 2 and the intake duct housing 3, and the connecting rib 8 separates the air flow channel 5 and the resonance cavity 6. It can be understood that the intake duct housing 1 is a hollow pipe body blow-molded from polyethylene HDPE. The intake duct housing 1, the resonance housing 2, the pipeline 7, and the connecting rib 8 are integrally formed and connected. Thus, when manufacturing the high-position intake duct 10, the intake duct housing 1, the resonance housing 2, the pipeline 7, and the connecting rib 8 can be directly blow-molded integrally from polyethylene HDPE. Arranging the position of the resonance cavity 6 outside the corner of the air flow channel 5 can leave space for the resonance cavity 6 without affecting the air flow channel 5. The connecting rib 8 is a reinforcing rib. The resonance housing 2 and the intake duct housing 3 are connected by the reinforcing rib, which not only ensures the overall strength of the high-position intake duct 10 but also does not affect the appearance.

[0045] Among them, the resonance cavity 6 has a predetermined resonance frequency, and the predetermined resonance frequency and the intake channel frequency are suitable for resonance noise reduction. Specifically, the transmission loss and other conditions of the high-position intake duct 10 of the embodiment of the present invention can be understood by combining Figure 2 the relationship diagram of the engine order frequency and decibel according to an embodiment of the present invention, where Figure 2 Figure is the relationship diagram of the engine order frequency and decibel of the engine according to an embodiment of the present invention. Among them Figure 2 curve 1 in is the relationship curve of the engine order frequency and decibel when the resonance cavity 6 is not provided, and curve 2 is the relationship curve of the engine order frequency and decibel after the resonance cavity 6 of the embodiment of the present invention is provided. It can be seen from Figure 2 this that the transmission loss value of the intake system at the engine order frequency of 180 Hz is slightly lower.

[0046] Based on the above, the inlet of the resonance cavity 6 of the embodiment of the present invention, that is, the pipeline 7 and the resonance cavity 6, are mainly designed for the transmission loss of the intake system at the engine order frequency of 180 Hz. The Helmholtz resonance muffler principle can be used to achieve the resonance noise reduction function of a specific frequency of the high-position intake duct 10. The Helmholtz resonance muffler uses resonance absorption. When sound waves are incident on the resonance cavity opening, due to the sudden change in acoustic impedance, a part of the sound energy will be reflected back to the sound source. At the same time, under the action of the sound waves, the air column in the aperture vibrates, and the vibration friction damping makes a part of the sound energy turn into heat energy and dissipate, and only a small amount of sound energy is radiated out, thus achieving the purpose of noise reduction.

[0047] Specifically, the noise reduction principle of using the Helmholtz resonance muffler to eliminate specific frequency noise can be understood by combining Figure 3 and formula (1-2). Figure 3Schematic diagram of a Helmholtz resonance muffler according to an embodiment of the present invention. Herein, Lc represents the inlet length of the resonance cavity 6, i.e., the length of the pipeline 7, with the unit of m; c represents the speed of sound, with the unit of m / s; Sc is the cross-sectional area of the cavity opening, i.e., the cross-sectional area of the pipeline 7, with the unit of m², and V is the volume of the cavity of the resonance cavity 6, with the unit of m 3 , and f is the noise frequency generated by the resonance cavity 6, with the unit of Hz.

[0048]

[0049] In some embodiments of the present invention, the pipeline 7 is cylindrical. The inner diameter of the pipeline 7 is 24 mm to 26 mm, the length of the pipeline 7 is 24 mm to 25 mm, and the volume of the cavity of the resonance cavity 6 is 0.5 L to 1.5 L. Specific limitations are not made herein for the inner diameter of the pipeline 7, the length of the pipeline 7, and the volume of the cavity of the resonance cavity 6, etc. For example, in the embodiments of the present invention, the inner diameter R of the pipeline 7 can be set to 25 mm. Since the pipeline 7 is cylindrical, the cross-sectional area Sc of the pipeline 7 can be calculated based on the inner diameter R. The length Lc of the pipeline 7 is 24.5 mm, and the volume of the cavity of the resonance cavity 6 is 1 L. Further, simulation experiments can be carried out for the above specifications of the resonance cavity 6 and the pipeline 7, referring to Figure 2 and Figure 4 to understand the improvement effect of the transmission loss of the high-position intake duct 10, wherein, Figure 4 is an enlarged diagram of decibels when the engine order frequency is 180 Hz according to an embodiment of the present invention. Among them Figure 4 the curve 1 in is the relationship curve between the engine order frequency and decibels without the resonance cavity 6, and the curve 4 is the relationship curve between the engine order frequency and decibels after the resonance cavity 6 of the embodiment of the present invention is set. Given that the transmission loss value of the intake system at the engine order frequency of 180 Hz without the resonance cavity 6 is slightly lower, through simulation analysis and actual measurement, it is confirmed that the transmission loss value of the intake system at the engine order frequency x = 180 Hz of the resonance cavity 6 is y = 10.1629, which is 5 dB higher than the original situation, achieving a silencing effect.

[0050] Based on the above, the present invention improves the body structure of the high-position intake duct 10. Combining the principle of the Helmholtz resonance muffler, under the existing vehicle boundary, a design of adding the resonance cavity 6 in the high-position intake duct 10 is carried out, and by designing the specifications of the resonance cavity 6, while meeting the body performance of the high-position intake duct 10, the intake transmission loss at the engine order frequency of 180 Hz is improved, and the noise at the intake port 3 of the high-position intake duct 10 is reduced.

[0051] In some embodiments, such as Figure 5As shown, it is a side view of the high-position intake air duct according to an embodiment of the present utility model. Among them, an intake grille 31 is provided at the intake port 3. Specifically, the intake grille 31 at the intake port 3 can be injection-molded from polyethylene HDPE. Among them, the intake grille 31 includes a plurality of grille plates 311 and a plurality of connecting plates 312. The plurality of grille plates 311 are parallel to each other and are all inclined relative to the intake direction so as to cover the intake port 3 in the projection in the intake direction; the grille plates 311 and the connecting plates 312 extend perpendicular to each other, and the connecting plates 312 are connected to the plurality of grille plates 311.

[0052] In some embodiments of the present utility model, as Figure 1 shown, the high-position intake air duct 10 further includes a dust and water discharge valve 9. The dust and water discharge valve 9 is adjacent to the air outlet 4 and communicates with the air flow channel 5. The dust and water discharge valve 9 is used to discharge impurities in the air flow channel 5. It can be understood that the high-position intake air duct 10, as an important part of the intake system, plays the role of dust removal and water removal, which is equivalent to the primary filter in the intake system. When dust, rainwater, etc. enter the air flow channel 5, they can be discharged in time from the dust and water discharge valve 9, and thus will not enter the engine and cause damage to the engine. And the dust and water discharge valve 9 is arranged at a position adjacent to the air outlet 4, which will not affect the air intake volume of the entire intake system, nor will it generate resistance to the air flow in the air flow channel 5, and thus will not affect the power of the engine.

[0053] In addition, a reinforcing groove is formed on the outer surface of the intake air duct housing 1. The reinforcing groove is located on one side of the intake air duct housing 1 adjacent to the air outlet 4. A reinforcing protrusion 11 is formed on the inner surface of the intake air duct housing 1 at a position corresponding to the reinforcing groove. Among them Figure 1 is an internal sectional view of the intake air duct housing 1. From this Figure 1 only the reinforcing protrusion 11 is shown.

[0054] Specifically, two reinforcing protrusions 11 can be provided on the inner surface of the intake air duct housing 1 on the side adjacent to the air outlet 4. This protrusion structure is actually a reinforcing rib, which has the function of strengthening the intake air duct housing 1 and increasing the reliability and compressive resistance of the intake air duct housing 1. Further, the reinforcing protrusion 11 and the dust and water discharge valve 9 are integrally formed with the intake air duct housing 1, the resonance housing 2, the pipeline 7, and the connecting rib 8. Thus, in the industrial production process, the intake air duct housing 1, the resonance housing 2, the pipeline 7, the connecting rib 8, the reinforcing protrusion 11, and the dust and water discharge valve 9 can be blow-molded from polyethylene HDPE.

[0055] The high-position intake duct 10 proposed according to the embodiments of the present utility model, in combination with the muffler principle, can achieve the muffling function at specific frequencies of the engine by adding a resonance cavity 6 structure in the body of the high-position intake duct 10. Moreover, by arranging the resonance housing 2 at the corner of the intake duct housing 1 and connecting the resonance cavity 6 and the air flow channel 5 through a pipeline 7, problems such as space tension and inconvenient layout caused by using external structures can be avoided. Additionally, by setting the intake duct housing 1, the resonance housing 2, the pipeline 7, the connecting rib 8, the reinforcing protrusion 11, and the dust and drainage valve 9 as an integrally formed structure, the increase in weight cost brought by external structures can also be saved. By reasonably designing the overall shape of the high-position intake duct 10, both the muffling effect and the aesthetics of the high-position intake duct 10 are ensured.

[0056] In an embodiment of the present utility model, an intake system is further proposed. As Figure 6 shown, it is a block diagram of an intake system according to an embodiment of the present utility model. Among them, the intake system 100 includes the high-position intake duct 10 of any one of the above embodiments.

[0057] The intake system 100 proposed according to the embodiments of the present utility model, by adopting the high-position intake duct 10 of any one of the above embodiments and adding a resonance cavity 6 structure above the body of the high-position intake duct 10, in combination with the muffler principle, can achieve the muffling function at specific frequencies of the engine. And by reasonably designing the overall shape of the high-position intake duct 10, the overall space of the intake system 100 can be saved, facilitating space layout, and the problem of the increase in weight cost caused by using external structures to the intake system 100 can also be avoided. Both the muffling effect of the intake system 100 and the aesthetics of the overall intake system 100 are ensured.

[0058] In an embodiment of the present utility model, a vehicle is further proposed. As Figure 7 shown, it is a block diagram of a vehicle according to an embodiment of the present utility model. Among them, the vehicle 1000 includes a vehicle body 200 and the intake system 100 of the second aspect embodiment above, and the intake system 100 is arranged on the vehicle body 200.

[0059] The vehicle 1000 proposed according to the embodiments of the present utility model, by adopting the intake system 100 of the second aspect embodiment above and improving the structure of the high-position intake duct 10 under the existing vehicle boundary and adding a resonance cavity 6 structure, can achieve the muffling function at specific frequencies of the engine without increasing the cost of the vehicle 1000, enhance the overall muffling performance of the vehicle, and improve the driving experience of users.

[0060] The other constitutions and operations of the vehicle 1000 and the intake system 100 according to the embodiments of the present utility model are known to those of ordinary skill in the art and will not be described in detail here.

[0061] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0062] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A high-position air intake duct, characterized in that: include: An air inlet housing, wherein an air inlet and an air outlet are provided on the air inlet housing, the air inlet and the air outlet are connected to form an air flow channel, and the air inlet and the air outlet face different directions; A resonant shell, the resonant shell is connected to the air inlet shell and is located at a corner of the air inlet shell, the resonant shell has a resonant cavity inside, and the resonant cavity and the air flow channel are connected through a pipeline; The resonant cavity has a predetermined resonant frequency, and the predetermined resonant frequency and the air inlet frequency are suitable for resonance noise reduction.

2. The high-position air intake duct according to claim 1, characterized in that: A connecting rib is connected between the resonance shell and the air inlet duct shell, and the connecting rib separates the air flow channel and the resonance cavity.

3. The high-position air intake duct according to claim 2, characterized in that: The air inlet housing, the resonance housing, the pipeline and the connecting ribs are integrally formed and connected.

4. The high-position air intake duct according to claim 1, characterized in that: An air intake grille is provided at the air intake; Wherein, the air intake grille comprises: A plurality of grid plates, wherein the plurality of grid plates are parallel to each other and are all arranged obliquely relative to the air intake direction so that their projections in the air intake direction cover the air intake port; A plurality of connecting plates, the grid plates and the connecting plates extend perpendicularly to each other, and the connecting plates are connected to the plurality of grid plates.

5. The high-position air intake duct according to claim 1, characterized in that: Also includes: A dust and water discharge valve is provided, the dust and water discharge valve being adjacent to the air outlet and being in communication with the air flow channel, and the dust and water discharge valve being used for discharging impurities in the air flow channel.

6. The high-position air intake duct according to claim 1, characterized in that: The outer surface of the air inlet housing is configured with a reinforcement groove, the reinforcement groove is located on a side of the air inlet housing adjacent to the air outlet, and the inner surface of the air inlet housing is configured with a reinforcement protrusion at a position corresponding to the reinforcement groove.

7. The high-position air intake duct according to claim 1, characterized in that: The pipeline is cylindrical, the inner diameter of the pipeline is 24 mm to 26 mm, the length of the pipeline is 24 mm to 25 mm, and the volume of the cavity of the resonant cavity is 0.5 L to 1.5 L.

8. The high-position air intake duct according to claim 6, characterized in that: The thickness of the air inlet housing is 3 mm to 4 mm, the width of the air inlet along a first direction is 120 mm to 130 mm, and the height of the air inlet along a second direction perpendicular to the first direction is 820 mm to 830 mm; The cross-sectional area of ​​the air inlet is 0.10 m2 to 0.11 m2, and the cross-sectional area of ​​the air outlet is not greater than 0.1 m2.

9. An air intake system, characterized in that: It comprises the high-position air inlet duct as described in any one of claims 1-8.

10. A vehicle, characterized in that: The invention comprises a vehicle body and the air intake system according to claim 9, wherein the air intake system is arranged on the vehicle body.

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