An intake manifold with a resonant cavity

Abstract

This invention relates to the field of engine intake manifold technology, specifically to an intake manifold with a resonant cavity, comprising a manifold body, a resonant tube, and an intake main pipe connected in sequence. The manifold body is fixedly connected to and communicates with the engine block. A connecting pipe is intersecting the middle of the outer side wall of the resonant tube. The manifold body and the connecting pipe are fixedly connected and communicate with each other. The intake main pipe is coaxially fixedly connected to the resonant tube. This invention achieves continuous adjustment of the resonant cavity volume by setting a bowl-shaped sealing plate and simultaneously setting an elastic tube between the resonant tube and the sealing plate. The elastic deformation capability of the elastic tube automatically compensates for the gap change between the sealing plate and the resonant tube. The maximum diameter of the inner sidewalls of the resonant tube and the elastic tube, and the inner sidewall of the sealing plate, remains consistent, avoiding the flow channel discontinuity problem caused by the setting of baffles and other components in traditional structures. This effectively maintains the smoothness of the inner wall of the resonant cavity and the continuity of the flow field, reduces intake resistance, and improves intake efficiency.

Description

Technical Field

[0001] This invention relates to the field of engine intake manifold technology, specifically an intake manifold with a resonant cavity. Background Technology

[0002] As a key component of the engine's intake system, one of the core functions of the intake manifold is to distribute air or air-fuel mixture as evenly as possible to each cylinder. To improve the engine's charging efficiency, thereby enhancing its power and fuel economy, resonant cavity technology is widely used in intake manifold design. Its basic principle is to utilize the pressure wave generated during the intake process to create a resonance effect at a specific speed, forming an "inertial boost" on the intake valve that is about to close, thereby increasing the amount of air charged into the cylinder. Traditional fixed-volume resonant cavities have a resonant frequency that is strongly correlated with engine speed, and usually only achieve optimal performance in the low to medium speed range. To overcome this limitation, variable-volume resonant cavity technology has emerged. This type of technology changes the internal volume of the resonant cavity through mechanical and electronic means, thereby adjusting its inherent resonant frequency and optimizing intake efficiency over a wider range of engine speeds.

[0003] However, existing variable volume resonant cavity technology still has significant common defects: in order to achieve volume change, it usually has movable baffles, diaphragms or pistons inside. The introduction of these components often leads to steps, sharp corners, gaps or abrupt cross sections in the flow channel inside the resonant cavity, which seriously damages the smoothness of the inner wall and the continuity of the flow field. This easily causes strong fluid turbulence in the resonant cavity. When high-speed airflow passes through these discontinuous structures, separation and vortices will be generated, forming a large amount of turbulence. This turbulence is not used to enhance mixing, but rather unnecessarily increases intake resistance, leading to increased pumping losses in the engine. Especially under high speed and high load conditions, it will weaken or even completely offset the benefits of resonant supercharging. Moreover, turbulence dissipates the energy of pressure waves, reducing the "sharpness" and intensity of the resonance effect. Furthermore, the unstable flow field will excite cavity wall vibration, which may generate aerodynamic noise and affect the fatigue life of components.

[0004] Therefore, existing variable volume resonant cavity technologies, while pursuing "variability," often sacrifice the "smoothness" of the fluid, resulting in overall performance falling short of expectations. The market urgently needs a new type of variable volume resonant cavity structure that can flexibly adapt to different engine operating conditions while maximizing smooth airflow within the cavity and minimizing flow losses. Summary of the Invention

[0005] The purpose of this invention is to provide an intake manifold with a resonant cavity to solve the problems of existing variable volume resonant cavity schemes sacrificing the flow field environment inside the resonant cavity, thereby causing airflow turbulence inside the resonant cavity, resulting in increased intake resistance, reduced boost effect, and aggravated intake noise.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An intake manifold with a resonant cavity includes a manifold body, a resonant tube, and an intake main pipe connected in sequence. The manifold body is fixedly connected to and communicates with the engine block. A connecting pipe is intersecting the middle of the outer side wall of the resonant tube. The manifold body and the connecting pipe are fixedly connected and communicate with each other. The intake main pipe is coaxially fixedly connected to the resonant tube. An installation tube is coaxially fixedly connected to the end of the resonant tube away from the intake main pipe. A sealing plate is coaxially arranged inside the side of the installation tube away from the resonant tube. The sealing plate is bowl-shaped with a C-shaped cross-section. The arc-shaped opening of the sealing plate faces the side of the intake main pipe. The inner sidewalls of the resonant tube, the installation tube, and the sealing plate form a resonant cavity. A connecting shaft is coaxially arranged at the end of the sealing plate away from the intake main pipe. An electric push rod is coaxially fixedly connected to the end of the connecting shaft away from the intake main pipe. The housing of the electric push rod is coaxially fixedly connected to the installation tube. The actuator end of the electric push rod is coaxially fixedly connected to the connecting shaft. The electric push rod is electrically connected to the vehicle's electronic control system.

[0008] By installing a sealing plate inside the mounting tube and shaping the inner wall of the sealing plate into a bowl shape, and using an electric push rod to drive the sealing plate to reciprocate along the axis of the resonant tube, the volume of the resonant cavity is continuously adjustable. This design avoids the flow channel steps, sharp corners, gaps, or abrupt changes in cross-section caused by components such as baffles, diaphragms, or pistons in traditional variable-volume resonant cavities, effectively maintaining the smoothness of the inner wall of the resonant cavity and the continuity of the flow field. When the engine is under different speeds and load conditions, the vehicle's electronic control system can control the extension and retraction of the electric push rod according to preset parameters, thereby adjusting the position of the sealing plate to match the natural resonant frequency of the resonant cavity with the current operating conditions, optimizing intake efficiency over a wide speed range. At the same time, the arc-shaped opening design of the bowl-shaped sealing plate guides the airflow smoothly through the resonant cavity, reducing airflow separation and vortex generation, significantly reducing intake resistance, and avoiding the problems of increased pumping losses and weakened boosting effect caused by turbulence. In addition, by optimizing the flow field characteristics, this structure reduces the excitation effect of unstable flow field on the cavity wall, effectively reduces aerodynamic noise, and extends the fatigue life of components.

[0009] Preferably, the sealing plate includes a rubber part and a metal part. The connecting shaft is disposed on the metal part, and the rubber part is disposed on the side of the metal part away from the connecting shaft. An elastic tube is coaxially disposed at the end of the rubber part away from the metal part. The inner wall diameter of the elastic tube is D1, the maximum inner wall diameter of the sealing plate is D2, and the inner wall diameter of the resonant tube is D3, where D1=D2=D3. One end of the elastic tube is bonded to the end of the rubber part near the main intake pipe, and the other end is fixedly installed on the resonant tube by bolt connection. The wall thickness of the elastic tube is 0.5-0.8mm, and the elastic tube is made of elastic rubber material.

[0010] By configuring the sealing plate as a rubber and metal part, and placing an elastic tube between the resonant tube and the sealing plate, the elastic tube's elastic deformation capability can automatically compensate for the gap changes between the sealing plate and the resonant tube during the reciprocating movement of the sealing plate, thus maintaining the continuity and sealing of the inner wall of the resonant cavity. This structure not only avoids the sealing problems caused by component movement in traditional variable volume resonant cavities, but also reduces the impact and wear on the inner wall of the resonant tube during the movement of the sealing plate through the buffering effect of the elastic tube, improving the reliability and durability of the components. At the same time, the setting of the elastic tube ensures that the maximum diameter of the inner wall of the resonant tube, the elastic tube, and the inner wall of the sealing plate remains consistent during the movement of the sealing plate, maintaining a smooth transition of the flow field and further reducing the intake resistance.

[0011] Preferably, a limiting cage is coaxially provided inside the mounting tube. The end of the limiting cage near the main intake pipe is fixedly connected to the resonant tube by bolts, and the end of the limiting cage away from the main intake pipe is fixedly connected to the mounting tube. The inner sidewall of the limiting cage is in contact with the outer sidewall of the elastic tube.

[0012] By setting a limiting cage inside the mounting tube, the elastic tube is radially constrained and guided, ensuring that the elastic tube maintains stable axial deformation during the reciprocating movement of the sealing plate. This prevents the elastic tube from radially shifting or twisting due to airflow pressure or its own elastic restoring force, thus ensuring the smoothness of the inner wall of the resonant cavity and the continuity of the flow field. At the same time, the setting of the limiting cage also enhances the structural strength of the elastic tube, preventing it from excessively deforming or breaking under the impact of high-speed airflow, thereby improving the reliability and durability of the entire resonant cavity structure.

[0013] Preferably, the sidewall of the limiting cage has multiple through grooves that penetrate both the inner and outer sides. The multiple through grooves are arranged in a circular array along the axis of the limiting cage. The outer sidewalls of the rubber part and the metal part have multiple first flanges and second flanges respectively. Each through groove has a first flange and a second flange slidably connected. The first flange and the second flange in each through groove are fixedly connected by screws. The outer sidewalls of the first flange and the second flange extend outside the through groove.

[0014] By setting a through groove on the limiting cage and setting a first flange and a second flange on the rubber part and the metal part respectively, the relative movement between the sealing plate and the limiting cage is realized by the sliding connection of the first flange and the second flange in the through groove. At the same time, the stability and reliability of the sealing plate during the movement are ensured by the screw fixing connection. This structure not only allows the sealing plate to move smoothly along the axis of the resonant tube under the drive of the electric push rod, but also restricts the radial offset and rotation of the sealing plate by the cooperation of the first flange and the second flange with the through groove, further ensuring the smoothness of the inner wall of the resonant cavity and the continuity of the flow field. In addition, the outer walls of the first flange and the second flange extend outside the through groove, increasing the contact area with the limiting cage, improving the structural strength and durability, and effectively preventing the connection loosening or failure caused by high-speed airflow impact or vibration.

[0015] Preferably, the sidewall of the elastic tube includes a rubber layer and a fiber layer, the rubber layer and the fiber layer are coaxially arranged, the rubber layer is located inside the fiber layer, the fiber layer is composed of multiple fiber rings, the multiple fiber rings are coaxial with the rubber layer, and the multiple fiber rings are evenly distributed at equal intervals along the axis of the elastic tube.

[0016] By using a rubber layer and a fiber layer as the sidewalls of the elastic tube, the elastic deformation capability of the rubber layer allows the elastic tube to automatically expand and contract with the movement of the sealing plate. Simultaneously, the reinforcement effect of the fiber layer improves the tensile strength and durability of the elastic tube. The fiber layer consists of multiple fiber rings coaxial with the rubber layer and evenly distributed along the axis of the elastic tube. This structure not only ensures uniform deformation of the elastic tube in both axial and radial directions, but also prevents excessive radial expansion or contraction under high-speed airflow impact through the constraint of the fiber rings, thus ensuring the sealing of the inner wall of the resonant cavity and the continuity of the flow field. Furthermore, the composite structure of the rubber and fiber layers also improves the wear resistance and aging resistance of the elastic tube, extending its service life.

[0017] Preferably, the inner wall of the metal part, the inner wall of the resonant tube, and the inner wall of the manifold are all coated with a protective layer. The protective layer is made of any one of ceramic, alumina, silicon carbide, or organosilicon resin, and the inner wall surface finish of the protective layer is Ra0.8 to Ra1.6 μm.

[0018] By setting a protective layer on the inner wall of the metal part, resonant tube, and manifold, the high hardness, wear resistance, and corrosion resistance of the protective layer effectively protect the inner wall of the resonant cavity from the erosion and corrosion of particles in the high-speed airflow, extending the service life of the components. At the same time, the high smoothness design of the protective layer reduces the frictional resistance between the airflow and the inner wall, further reducing the intake resistance and improving the intake efficiency. In addition, the protective layer also plays a role in heat insulation, reducing the transfer of engine heat into the resonant cavity, maintaining the temperature stability inside the resonant cavity, and helping to improve the stability of the resonance effect.

[0019] Preferably, a limiting tube is provided at one end of the metal part near the main intake pipe. The limiting tube is fixedly connected to the metal part. Multiple limiting rings are coaxially fixedly installed inside the limiting tube. The multiple limiting rings are equidistantly arranged, and all the multiple limiting rings are embedded in the rubber part.

[0020] By setting a limiting tube and a limiting ring on the metal part, with the limiting ring embedded in the rubber part, the radial deformation range of the rubber part is precisely limited by the limiting tube and the limiting ring. This prevents the rubber part from deforming under gas pressure and causing deformation of the inner wall surface, thus ensuring the smoothness of the inner wall of the sealing plate and the stability of the flow field. At the same time, this structure also enhances the connection strength between the rubber part and the metal part through the tight fit between the limiting ring and the rubber part, preventing the rubber part from falling off or shifting due to high-speed airflow impact or vibration. In addition, the setting of the limiting tube and the limiting ring also plays a guiding role, guiding the rubber part to move smoothly along the axis of the resonant tube, further maintaining the smoothness of the inner wall of the resonant cavity and the continuity of the flow field.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. This invention achieves continuous and adjustable resonant cavity volume by setting a bowl-shaped sealing plate and simultaneously setting an elastic tube between the resonant tube and the sealing plate. The elastic deformation capability of the elastic tube automatically compensates for the gap change between the sealing plate and the resonant tube. The maximum diameter of the inner wall of the resonant tube and the elastic tube, as well as the inner wall of the sealing plate, remains consistent. This avoids the flow channel discontinuity problem caused by setting partitions and other components in traditional structures, effectively maintaining the smoothness of the inner wall of the resonant cavity and the continuity of the flow field, reducing air intake resistance, and improving air intake efficiency.

[0023] 2. This invention provides radial constraint and guidance to the elastic tube by setting a limiting cage inside the installation tube, ensuring that the elastic tube maintains stable axial deformation during the reciprocating movement of the sealing plate, avoiding radial offset or twisting of the elastic tube, thereby ensuring the smoothness of the inner wall of the resonant cavity and the continuity of the flow field, while also enhancing the structural strength of the elastic tube.

[0024] 3. The present invention provides a through groove on the limiting cage, and provides a first flange and a second flange on the rubber part and the metal part respectively. The relative movement between the sealing plate and the limiting cage is realized by the sliding connection of the flange in the through groove. At the same time, the stability and reliability of the sealing plate during the movement are ensured by the screw fixing connection, which further ensures the smoothness of the inner wall of the resonant cavity and the continuity of the flow field.

[0025] 4. By setting a limiting tube and a limiting ring on the metal part, and embedding the limiting ring inside the rubber part, the present invention precisely limits the radial deformation range of the rubber part, preventing the rubber part from deforming under gas pressure and affecting the smoothness of the inner wall of the sealing plate and the stability of the flow field. At the same time, it enhances the connection strength between the rubber part and the metal part, preventing the rubber part from falling off or shifting. Attached Figure Description

[0026] Figure 1 This is an isometric view of the intake manifold with resonant cavity of the present invention;

[0027] Figure 2 This is a top view of the intake manifold with resonant cavity of the present invention;

[0028] Figure 3 for Figure 2 Full sectional view at point AA;

[0029] Figure 4 for Figure 3 Full sectional view at point BB;

[0030] Figure 5 for Figure 3 A magnified view of a section at point C;

[0031] Figure 6 for Figure 3 A magnified view of a section at point D.

[0032] In the diagram: 1. Manifold body; 2. Resonant tube; 201. Resonant cavity; 3. Main intake pipe; 4. Connecting pipe; 5. Mounting pipe; 6. Sealing plate; 601. Connecting shaft; 602. Rubber part; 603. Metal part; 604. No. 1 flange; 605. No. 2 flange; 606. Protective layer; 7. Electric push rod; 701. Actuating end; 702. Housing; 703. Motor; 8. Elastic tube; 801. Rubber layer; 802. Fiber layer; 803. Fiber ring; 9. Limiting cage; 901. Through groove; 10. Limiting tube; 1001. Limiting ring. Detailed Implementation

[0033] Please see Figures 1 to 6 This invention provides an intake manifold with a resonant cavity, the technical solution of which is as follows:

[0034] Please refer to an intake manifold with a resonant cavity. Figures 1 to 3 The system includes a manifold 1, a resonant tube 2, and an intake manifold 3 connected in sequence. The manifold 1 is fixedly connected to and communicates with the engine block. A connecting pipe 4 is intersecting the middle of the outer side wall of the resonant tube 2. The manifold 1 and the connecting pipe 4 are fixedly connected and communicate with each other. The intake manifold 3 is coaxially fixedly connected to the resonant tube 2. An installation pipe 5 is coaxially fixedly connected to the end of the resonant tube 2 away from the intake manifold 3. A sealing plate 6 is coaxially arranged on the side of the installation pipe 5 away from the resonant tube 2. The sealing plate 6 is bowl-shaped with a C-shaped cross-section. The arc-shaped opening of the sealing plate 6 faces the side of the intake manifold 3. The inner sidewalls of the resonant tube 2, the installation pipe 5, and the sealing plate 6 form a resonant cavity 201. A connecting shaft 601 is coaxially mounted on the end of the connecting shaft 601 away from the intake manifold 3. An electric push rod 7 is coaxially fixedly connected to the end of the connecting shaft 601 away from the intake manifold 3. The housing 702 of the electric push rod 7 is coaxially fixedly connected to the mounting tube 5. The actuating end 701 of the electric push rod 7 is coaxially fixedly connected to the connecting shaft 601. The motor 703 of the electric push rod 7 is electrically connected to the vehicle's electronic control system. The sealing plate 6 includes a rubber part 602 and a metal part 603. The connecting shaft 601 is located on the metal part 603. The rubber part 602 is located on the side of the metal part 603 away from the connecting shaft 601. An elastic tube 8 is coaxially mounted on the end of the rubber part 602 away from the metal part 603. The inner wall diameter of the elastic tube 8 is D1=56mm, the maximum inner wall diameter of the sealing plate 6 is D2=56mm, and the inner wall diameter of the resonant tube 2 is D3=56mm. One end of the elastic tube 8 is bonded to the end of the rubber part 602 near the intake main pipe 3, and the other end is fixedly installed on the resonant tube 2 by bolts. The wall thickness of the elastic tube 8 is 0.5mm, and the elastic tube 8 is made of elastic rubber. The end of the metal part 603 near the intake main pipe 3 is provided with a limiting tube 10, which is fixedly connected to the metal part 603. Multiple limiting rings 1001 are coaxially fixedly installed inside the limiting tube 10. The multiple limiting rings 1001 are equidistantly arranged, and... Multiple limiting rings 1001 are embedded in the rubber part 602; the sidewall of the elastic tube 8 includes a rubber layer 801 and a fiber layer 802, which are coaxially arranged. The rubber layer 801 is located inside the fiber layer 802. The fiber layer 802 is composed of multiple fiber rings 803, which are coaxial with the rubber layer 801 and are evenly distributed along the axis of the elastic tube 8; the inner sidewall of the metal part 603, the inner sidewall of the resonant tube 2, and the inner sidewall of the manifold 1 are all coated with a protective layer 606. The protective layer 606 is made of alumina material and the inner wall surface of the protective layer 606 is Ra1.6μm.

[0035] Please see Figures 4 to 6A limiting cage 9 is coaxially installed inside the mounting pipe 5. The end of the limiting cage 9 closest to the intake main pipe 3 is fixedly connected to the resonant pipe 2 by bolts, and the end of the limiting cage 9 furthest from the intake main pipe 3 is fixedly connected to the mounting pipe 5. The inner side wall of the limiting cage 9 is in contact with the outer side wall of the elastic pipe 8. Multiple through grooves 901 are provided on the side wall of the limiting cage 9, penetrating both the inner and outer sides. The multiple through grooves 901 are arranged in a circular array along the axis of the limiting cage 9. Multiple first flanges 604 and second flanges 605 are respectively provided on the outer side walls of the rubber part 602 and the metal part 603. The first flange 604 and the second flange 605 are slidably connected in each through groove 901. The first flange 604 and the second flange 605 in each through groove 901 are fixedly connected by screws. The outer side walls of the first flange 604 and the second flange 605 extend outside the through groove 901.

[0036] Working principle: Please refer to Figures 1 to 6 When the engine starts and enters the operating state, the intake manifold 3 actively introduces outside air into the resonant tube 2. At the same time, the electric push rod 7 starts and works under the precise control of the vehicle's electronic control system. The vehicle's electronic control system detects the pressure value in the engine cylinder and the pressure value in the resonant cavity 201, and at the same time detects the crankshaft speed of the engine, thereby controlling the motor 703 of the electric push rod 7 to rotate forward or backward, thereby pushing the sealing plate 6 forward or backward. The actuator 701 of the electric push rod 7 is connected to the sealing plate 6 through the connecting shaft 601, driving the sealing plate 6 to reciprocate along the axis of the resonant tube 2. During the movement of the sealing plate 6, because the system is equipped with an elastic tube 8, and the inner wall diameter D1 of the elastic tube 8, the maximum inner wall diameter D2 of the sealing plate 6, and the inner wall diameter D3 of the resonant tube 2 are all equal, the elastic tube 8 can automatically compensate for the gap changes between the sealing plate 6 and the resonant tube 2 caused by the movement due to its own elastic deformation capability. In this way, no matter where the sealing plate 6 is located, the inner walls of the resonant tube 2, the elastic tube 8 and the sealing plate 6 can always remain continuous and smooth, ensuring that the smoothness of the inner wall of the resonant cavity 201 is not disrupted, so that the flow field can flow stably and continuously, thereby effectively reducing the resistance during the air intake process and significantly improving the air intake efficiency.

[0037] Meanwhile, the limiting cage 9 plays a crucial role in radial constraint and guidance within the system. When the sealing plate 6 reciprocates, the limiting cage 9 ensures that the elastic tube 8 maintains stable radial deformation, preventing radial displacement or twisting due to airflow pressure or its own elastic restoring force. This further guarantees the smoothness of the inner wall of the resonant cavity 201 and the continuity of the flow field. Furthermore, the side wall of the limiting cage 9 is provided with a through groove 901, which is slidably connected to the first flange 604 and the second flange 605 on the rubber part 602 and the metal part 603, and fixed with screws. This design ensures the smoothness of the sealing plate 6 during movement while effectively limiting its radial displacement and rotation, greatly enhancing the stability and reliability of the entire structure.

[0038] Furthermore, the limiting tube 10 and limiting ring 1001 provided on the metal part 603 precisely limit the radial deformation range of the rubber part 602. The limiting ring 1001 is embedded inside the rubber part 602, preventing the rubber part 602 from deforming and changing the curvature of the inner wall of the sealing plate 6 when gas pressure is applied to the rubber part 602, thereby ensuring the smoothness of the inner wall of the sealing plate 6 and the stability of the flow field. At the same time, this design also enhances the connection strength between the rubber part 602 and the metal part 603, effectively preventing the rubber part 602 from falling off or shifting.

[0039] The protective layer 606, with its excellent properties of high hardness, wear resistance, and corrosion resistance, provides comprehensive protection for the inner wall of the resonant cavity 201, shielding it from the erosion and corrosion of particles in the high-speed airflow, thereby extending the service life of the components. The high-gloss design of the protective layer 606 further reduces the frictional resistance between the airflow and the inner wall, effectively reducing intake resistance and improving intake efficiency. In addition, the protective layer 606 also has good heat insulation properties, reducing the transfer of engine heat into the resonant cavity 201, maintaining temperature stability within the resonant cavity 201, and playing a positive role in improving the stability of the resonance effect.

[0040] The specific embodiment of the present invention has been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the embodiments described above. For those skilled in the art, various changes, modifications, substitutions, and variations made to these embodiments without departing from the principles and ideas of the present invention should still fall within the protection scope of the present invention.

Claims

1. An intake manifold with a resonant cavity (201), comprising a manifold body (1), a resonant pipe (2) and an intake main pipe (3) which are communicated in sequence, the manifold body (1) is fixedly connected with and communicated to a cylinder block of an engine, a communicating pipe (4) is arranged through the middle part of the outer side wall of the resonant pipe (2), the manifold body (1) is fixedly connected with and communicated to the communicating pipe (4), the intake main pipe (3) is coaxially fixedly connected with the resonant pipe (2), characterized in that, The resonant pipe (2) is coaxially and fixedly connected with a mounting pipe (5) away from one end of the air inlet main pipe (3), a sealing plate (6) is coaxially arranged on the side of the mounting pipe (5) away from the resonant pipe (2), the sealing plate (6) is in the shape of a bowl with a "C" shaped cross section, the arc-shaped opening direction of the sealing plate (6) is towards the side of the air inlet main pipe (3), the inner side walls of the resonant pipe (2), the mounting pipe (5) and the sealing plate (6) form a resonant cavity (201), a connecting shaft (601) is coaxially arranged on the end of the sealing plate (6) away from the air inlet main pipe (3), an electric push rod (7) is coaxially and fixedly connected with the connecting shaft (601) away from the air inlet main pipe (3), the shell (702) of the electric push rod (7) is coaxially and fixedly connected with the mounting pipe (5), the execution end (701) of the electric push rod (7) is coaxially and fixedly connected with the connecting shaft (601), and the electric push rod (7) is electrically connected with the electronic control system of the vehicle. The sealing plate (6) comprises a rubber part (602) and a metal part (603), the connecting shaft (601) is arranged on the metal part (603), the rubber part (602) is arranged on the side of the metal part (603) away from the connecting shaft (601), an elastic tube (8) is coaxially arranged on the end of the rubber part (602) away from the metal part (603), the inner side wall of the elastic tube (8) has a diameter D1, the maximum diameter of the inner side wall of the sealing plate (6) is D2, the diameter of the inner side wall of the resonant pipe (2) is D3, D1=D2=D3, one end of the elastic tube (8) is bonded to the end of the rubber part (602) close to the air inlet main pipe (3), the other end is fixedly installed on the resonant pipe (2) through bolt connection, the wall thickness of the elastic tube (8) is 0.5-0.8mm, and the elastic tube (8) is made of elastic rubber material.

2. A charge air intake manifold with a resonator (201) according to claim 1, characterized in that A limiting cage (9) is coaxially arranged in the mounting pipe (5), the end of the limiting cage (9) close to the air inlet main pipe (3) is fixedly connected with the resonant pipe (2) through bolts, the end of the limiting cage (9) away from the air inlet main pipe (3) is fixedly connected with the mounting pipe (5), and the inner side wall of the limiting cage (9) is attached to the outer side wall of the elastic tube (8).

3. A gas inlet manifold with a resonator (201) according to claim 2, characterized in that A plurality of through grooves (901) penetrating the inner and outer sides are formed in the side wall of the limiting cage (9), the plurality of through grooves (901) are arranged in an annular array along the axis of the limiting cage (9), a plurality of first flanges (604) and second flanges (605) are respectively formed in the outer side walls of the rubber part (602) and the metal part (603), a first flange (604) and a second flange (605) are slidably connected in each through groove (901), the first flange (604) and the second flange (605) in each through groove (901) are fixedly connected through screws, and the outer side walls of the first flange (604) and the second flange (605) extend out of the through groove (901).

4. A charge air intake manifold with a resonator (201) according to claim 3, characterized in that The side wall of the elastic tube (8) comprises a rubber layer (801) and a fiber layer (802), the rubber layer (801) and the fiber layer (802) are coaxially arranged, the rubber layer (801) is located inside the fiber layer (802), the fiber layer (802) is composed of a plurality of fiber rings (803), the plurality of fiber rings (803) are coaxial with the rubber layer (801), and the plurality of fiber rings (803) are equidistantly arranged along the axis of the elastic tube (8).

5. A charge air intake manifold with a resonator (201) according to claim 1, characterized in that, The inner side wall of the metal part (603), the inner side wall of the resonant tube (2) and the inner side wall of the manifold body (1) are coated with a protective layer (606), the protective layer (606) is made of any one of ceramic, alumina, silicon carbide or silicone resin, and the inner wall smoothness of the protective layer (606) is Ra0.8~Ra1.6μm.

6. A charge air intake manifold with a resonator (201) according to claim 3, characterized in that The metal part (603) is provided with a limiting tube (10) close to one end of the air inlet main pipe (3), the limiting tube (10) is fixedly connected with the metal part (603), a plurality of limiting rings (1001) are coaxially and fixedly installed in the limiting tube (10), the plurality of limiting rings (1001) are equidistantly arranged, and the plurality of limiting rings (1001) are embedded in the rubber part (602).

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