Commercial vehicle air inlet duct connecting assembly and vehicle

Abstract

The invention provides a commercial vehicle air inlet channel connecting assembly and a vehicle, the commercial vehicle air inlet channel connecting assembly comprises a silencing pipeline, the silencing pipeline comprises a pipeline main body, a first gas flow channel is arranged in the pipeline main body, the pipeline main body is provided with a mounting cavity, and the mounting cavity comprises at least part of the first gas flow channel; the first pipe piece is located in the mounting cavity and connected with the pipeline body, a second gas flow channel is arranged on the side, facing the first gas flow channel, of the first pipe piece, and a closed gas inlet flow channel is defined by the first gas flow channel and the second gas flow channel; and the second pipe piece is located on the side, away from the first gas flow channel, of the first pipe piece, the second pipe piece is connected with at least one of the pipeline body and the first pipe piece, at least one silencing cavity is defined between the second pipe piece and the first pipe piece, and the silencing cavities communicate with the gas inlet flow channel. The problem that in the prior art, an air inlet channel connecting assembly is poor in noise elimination capacity is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of air intake duct assembly design, and in particular to an air intake duct connection assembly for a commercial vehicle and the vehicle. Background Art

[0002] In existing technologies, heavy-duty commercial vehicle air intake systems generally have the following technical pain points:

[0003] The contradiction between the insufficient use of intake system silencer structures and users' growing quality demands: As users' demands for commercial vehicle quality increase, they are increasingly complaining about the noise quality of existing trucks. However, existing heavy-duty commercial vehicle intake systems rarely use dedicated silencers, resulting in an urgent need to improve the intake system's ability to reduce engine noise. Generally, the addition of silencer structures will lead to increased intake pressure loss in the intake system, which in turn increases vehicle energy consumption. Existing intake system silencers suffer from shortcomings such as a narrow silencer frequency band, low noise reduction amplitude, and high system complexity.

[0004] With respect to the above-mentioned problems in the prior art, no effective solution has been proposed yet. Summary of the Invention

[0005] The main purpose of the present invention is to provide an air intake connection assembly for a commercial vehicle and a vehicle, so as to solve the problem of poor noise reduction capability of the air intake connection assembly in the prior art.

[0006] To achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided an air intake connection assembly for a commercial vehicle, including a silencer pipe, the silencer pipe including: a pipe main body, a first gas flow channel is arranged in the pipe main body, the pipe main body has an installation cavity, the installation cavity includes at least part of the first gas flow channel; a first pipe sheet, the first pipe sheet is located in the installation cavity, the first pipe sheet is connected to the pipe main body, a second gas flow channel is provided on the side of the first pipe sheet facing the first gas flow channel, the first gas flow channel and the second gas flow channel are surrounded to form a closed air intake flow channel; a second pipe sheet, the second pipe sheet is located on the side of the first pipe sheet away from the first gas flow channel, the second pipe sheet is connected to at least one of the pipe main body and the first pipe sheet, at least one silencer cavity is formed between the second pipe sheet and the first pipe sheet, and the silencer cavity is communicated with the air intake flow channel.

[0007] Furthermore, a plurality of partitions are provided on the side of the first tube sheet away from the first gas flow channel, and the plurality of partitions are arranged at intervals along the length extension direction of the first tube sheet. A total cavity is formed between the first tube sheet and the second tube sheet, and the plurality of partitions divide the total cavity into a plurality of relatively independent silencer cavities.

[0008] Furthermore, a plurality of mounting grooves are provided on the side of the second pipe segment facing the first pipe segment. The plurality of mounting grooves are provided in one-to-one correspondence with the plurality of partitions. When the second pipe segment is connected to the first pipe segment, the partitions extend into the corresponding mounting grooves.

[0009] Furthermore, a plurality of reinforcing ribs are provided on a side of the second pipe segment facing away from the first pipe segment, and the plurality of reinforcing ribs are provided in a one-to-one correspondence with the plurality of mounting grooves.

[0010] Furthermore, a plurality of connecting tubes are provided on the side of the first pipe sheet facing away from the first gas flow channel, and a corresponding connecting tube is provided in each silencer cavity. One end of the connecting tube is connected to the intake flow channel, and the other end of the connecting tube extends into the corresponding silencer cavity and is connected to the silencer cavity.

[0011] Furthermore, process connecting plates are provided on both radial sides of at least one connecting pipe, and the height of the process connecting plates is smaller than the height of the partition plates.

[0012] Furthermore, along the length extension direction of the first pipe segment, the widths of the plurality of silencer cavities are arranged to decrease in sequence.

[0013] Furthermore, the commercial vehicle intake duct connection assembly also includes: a connecting shell, the first end of the connecting shell is connected to the pipeline body and the first pipe sheet, the interior of the connecting shell is communicated with the intake flow duct, and the connecting shell is a hard pipeline; a bellows, the bellows is connected to the second end of the connecting shell, the interior of the connecting shell is communicated with the bellows, the bellows is made of TPV material, and the bellows is flexibly arranged.

[0014] Furthermore, the connecting shell is connected to the pipeline body and the first pipe segment by screws, and the connecting shell and the corrugated pipe are welded.

[0015] According to one aspect of the present invention, a vehicle is provided, including a commercial vehicle air intake duct connection assembly, wherein the commercial vehicle air intake duct connection assembly is the commercial vehicle air intake duct connection assembly described above.

[0016] By applying the technical solution of the present invention, a closed intake air duct is formed by enclosing the first pipe sheet and the pipe body, and at least one silencer cavity is formed between the second pipe sheet and the first pipe sheet, and the silencer cavity is connected to the intake air duct. Since the intake air duct and the silencer cavity formed by the silencer pipe are located on both sides respectively, unlike the traditional main intake channel located in the center of the muffler, the transmission loss (silencer capacity) of each silencer cavity is higher, which improves the acoustic performance of the entire intake system, significantly reduces the noise level, and improves the sound quality of commercial vehicles. At the same time, a multi-part design of the intake system is achieved, which reduces the complexity and assembly difficulty of the system, reduces potential leakage points, and improves reliability. The technical solution of the present application effectively solves the problem of poor silencer capacity of the intake duct connection assembly in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 A schematic structural diagram of a first embodiment of an air intake duct connection assembly for a commercial vehicle according to the present invention is shown;

[0019] Figure 2 A schematic structural diagram of a second embodiment of an air intake duct connection assembly for a commercial vehicle according to the present invention is shown;

[0020] Figure 3 A schematic structural diagram of a third embodiment of an air intake connection assembly for a commercial vehicle according to the present invention is shown.

[0021] The above drawings include the following reference numerals:

[0022] 1. Silence pipe;

[0023] 11. Pipeline body; 111. First gas flow channel; 112. Installation cavity;

[0024] 12. First tube segment; 121. Second gas flow channel;

[0025] 13. Intake air duct;

[0026] 14. Second segment;

[0027] 15. Silence chamber;

[0028] 16. Partition;

[0029] 17. Total cavity;

[0030] 18. Strengthen the tendons;

[0031] 19. Connecting pipe;

[0032] 20. Process connection plate;

[0033] 30. Connect the housing;

[0034] 40. Bellows;

[0035] 50. Guiding mechanism;

[0036] 60. Shell;

[0037] 70. Drain nozzle. DETAILED DESCRIPTION

[0038] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0041] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in a variety of different forms and should not be interpreted as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of this application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0042] Combine Figures 1 to 3As shown, according to a specific embodiment of the present application, there is provided an air intake connection assembly for a commercial vehicle, including a muffler pipe 1, the muffler pipe 1 including: a pipe body 11, a first gas flow channel 111 is provided in the pipe body 11, the pipe body 11 has a mounting cavity 112, the mounting cavity 112 includes at least part of the first gas flow channel 111; a first pipe sheet 12, the first pipe sheet 12 is located in the mounting cavity 112, the first pipe sheet 12 is connected to the pipe body 11, and the first pipe sheet 12 faces the first gas flow channel 111. A second gas flow channel 121 is provided on one side of the channel 111, and the first gas flow channel 111 and the second gas flow channel 121 are surrounded to form a closed intake flow channel 13; a second tube sheet 14, the second tube sheet 14 is located on the side of the first tube sheet 12 away from the first gas flow channel 111, the second tube sheet 14 is connected to at least one of the pipeline body 11 and the first tube sheet 12, and at least one silencer cavity 15 is formed between the second tube sheet 14 and the first tube sheet 12, and the silencer cavity 15 is connected to the intake flow channel 13.

[0043] Applying the technical solution of the present invention, a sealed intake duct 13 is formed by enclosing the first duct sheet 12 and the main duct body 11. At least one silencer cavity 15 is formed between the second duct sheet 14 and the first duct sheet 12. This silencer cavity 15 communicates with the intake duct 13, enhancing the acoustic performance of the entire intake system, significantly reducing noise levels and improving the sound quality of commercial vehicles. This also achieves a component-based design for the intake system, reducing system complexity and assembly difficulty, reducing potential leak points, and improving reliability. The technical solution of this application effectively addresses the poor sound attenuation capability of the intake duct connection assembly in the prior art.

[0044] The connection between the inlet airflow channel 13 and the muffler cavity 15 creates a Helmholtz resonance effect when the gas flows through it, effectively reducing noise of specific frequencies. This multi-cavity structural design can optimize noise at different frequencies, improving the overall muffler bandwidth and muffler efficiency.

[0045] The integrated design of the first and second segments 12, 14, and their tight connection to the main pipe body 11, improves the structural compactness and assembly efficiency of the intake duct connection assembly. It also eliminates additional connectors (such as hose clamps), reduces potential leak points, and improves overall system reliability.

[0046] Using a direct connection method between the pipe segment and the pipeline body (such as welding) can form a more stable seal and reduce the problems of loose connections and noise caused by vibration.

[0047] Figure 1Also shown are a guide mechanism 50, a housing 60, and a drain nozzle 70. The air intake system provided by the present invention generally comprises a low-pressure connecting pipe, a temperature sensor, a filter-adsorption module, a mixer / water separator, a heater, an intake flow proportional valve, a high-temperature air bleed pipe, a normal-temperature air bleed pipe, and other major components arranged as needed. These components are connected to form a system via low-pressure pipes and other components. The normal-temperature air bleed pipe is located in the low-temperature ambient area and can inhale low-temperature air. The high-temperature air bleed pipe is located in the engine compartment and can inhale high-temperature air. By monitoring the intake system temperature and other information in real time and based on the execution strategy, control instructions are sent to adjust the flow proportional control valve opening, adjust the ratio of hot and cold air, and evenly mix the hot and cold air through the mixer. At the same time, the heater power is adjusted to heat the air, thereby achieving closed-loop temperature control and humidity control of the filter-adsorption module.

[0048] Figure 1 The silencer pipe 1 in the embodiment serves as a composite modular silencer chamber, which not only has a silencer chamber, but is also adjacent to and connected to the internal gas pipeline, thereby achieving a compact structure and optimal silencer effect.

[0049] Optionally, the guide mechanism 50 is connected to the shell 60 by a sealing ring and screws, the shell 60 is connected to the drain nozzle 70 by a plastic tie, the shell 60 is connected to the silencer pipe 1 by screws, the silencer pipe 1 is connected to the connecting shell 30 by screws, and the connecting shell 30 is connected to the bellows 40 by welding.

[0050] The silencer pipe 1 consists of three components: the upper, middle, and lower components (the pipe body 11, the first pipe segment 12, and the second pipe segment 14). These components are assembled by plug-in connection and sealed with sealing strips. The guide mechanism 50 is a grid with a semi-ellipsoidal profile that is offset to one side. When the cab is lowered, the eccentric dome guides the corrugated hose falling from the front diagonally backward, ultimately seating it in the correct position on the dome base. This ensures automatic alignment and placement of the corrugated hose when the cab is lowered.

[0051] Optional, such as Figure 2 As shown, five silencer cavities 15 are formed between the second pipe sheet 14 and the first pipe sheet 12. The silencer cavities 15 are connected to the intake air duct 13. Each silencer cavity is connected to the main pipe through the channel of the middle body, forming five Helmholtz silencers. Each silencer is designed with different silencer cavity sizes and connected diameters and lengths according to different frequency ranges and transmission loss indicators. Since the silencer main pipe (intake air duct 13) formed by the silencer pipe 1 and the silencer cavity are located on both sides, unlike the traditional main intake channel located in the center of the silencer, the transmission loss (silence reduction capacity) of each silencer is higher, and can reach more than 25dB. And based on different vehicle models and engine noise requirements, the silencer frequency can be adjusted by adjusting the diameter and length of the middle body connecting channel.

[0052] Furthermore, a plurality of partitions 16 are provided on the side of the first tube sheet 12 facing away from the first gas flow channel 111. The plurality of partitions 16 are arranged at intervals along the length extension direction of the first tube sheet 12. A total cavity 17 is formed between the first tube sheet 12 and the second tube sheet 14. The plurality of partitions 16 divide the total cavity 17 into a plurality of relatively independent silencer cavities 15.

[0053] By forming multiple silencer cavities 15 and modifying their structures, each silencer cavity 15 can function primarily in different frequency bands, thereby achieving broadband silencer. By providing multiple partitions 16 on the side of the first tube sheet 12 facing away from the first gas flow channel 111, the total cavity 17 is divided into multiple relatively independent silencer cavities 15. This design increases the complexity and diversity of the silencer structure. Each silencer cavity 15, based on its own geometric parameters (such as volume, shape, and opening size), can specifically absorb and attenuate noise within a specific frequency range, thereby achieving a broadband silencer effect and effectively improving the quality of intake noise.

[0054] Multiple independent silencer cavities 15 are distributed in the total cavity 17. Compared with a single large-volume silencer cavity, they can reduce the disturbance and resistance during gas flow, reduce the pressure loss in the entire intake system, and help maintain the engine's intake efficiency and reduce energy consumption.

[0055] The presence of the partition 16 strengthens the structure of the first pipe segment 12, increases lateral support, helps prevent the pipe segment from being deformed or damaged under extreme conditions (such as vibration and high temperature), and improves the stability and reliability of the entire silencer pipeline.

[0056] The modular design of the partition 16 allows for individual replacement or fine-tuning of the corresponding partition 16 if the silencing effect of a certain silencer cavity 15 is poor or needs to be adjusted for different engine noise characteristics without affecting the operation of the entire system, thereby improving the flexibility and maintainability of the solution.

[0057] A small valve or baffle is integrated at the entrance of each silencer cavity 15, and its opening is adjusted in real time by an electronic control system to respond to changes in engine noise under different working conditions and achieve a dynamically optimized silencer effect.

[0058] At least one of the muffler cavities 15 is filled with different types of sound-absorbing materials, such as porous sponge, fiber, or metal mesh. The most appropriate type and thickness of the sound-absorbing material is selected based on the frequency range of the sound waves to enhance the sound attenuation effect. Even smart materials can be considered, whose sound-absorbing properties can dynamically change based on temperature, humidity, or sound frequency to adapt to various environmental conditions.

[0059] A temperature and humidity sensor is integrated in the muffler line 1 to monitor the gas status in the intake air duct 13. The data is fed back to the ECU (electronic control unit). The ECU adjusts the position of the air intake or opens certain partitions 16 based on the real-time data to achieve optimal intake temperature and humidity control, thereby optimizing the operating state of the engine.

[0060] In addition to simple straight-tube flow channels, consider designing spiral or zigzag intake air channels. By changing the gas flow path, the distance and time for sound waves to propagate can be increased, further improving the noise reduction effect. Optimizing the flow channel shape can also reduce airflow turbulence and lower pressure loss.

[0061] Furthermore, a plurality of mounting grooves are provided on the side of the second tube segment 14 facing the first tube segment 12 . The plurality of mounting grooves are provided in one-to-one correspondence with the plurality of partitions 16 . When the second tube segment 14 is connected to the first tube segment 12 , the partitions 16 extend into the corresponding mounting grooves.

[0062] Multiple mounting slots on the side of the second tube segment 14 facing the first tube segment 12 correspond to the baffles 16 on the first tube segment. When the two tube segments are connected, the baffles 16 precisely fit into the corresponding mounting slots. This design ensures precise alignment between the muffler cavities 15, preventing degradation of the muffler effect due to assembly errors. It also strengthens the seal between the baffles and the tube segments, reducing the possibility of air and sound leakage, and improving overall muffler efficiency.

[0063] The cooperation between the partition 16 and the mounting groove enhances the structural rigidity between the two segments, especially when subjected to external pressure or vibration, so as to better maintain the original shape, reduce deformation and damage, and improve the long-term stability and durability of the system.

[0064] The design of the mounting slot allows the partition 16 to be considered as a detachable module. In this way, when maintaining or upgrading the system, the partition can be replaced or adjusted individually without completely disassembling the entire system, thereby improving maintenance efficiency and cost-effectiveness.

[0065] The provision of the mounting grooves also simplifies the assembly process of the tube segments and the partitions 16, making it more standardized and automated, which is beneficial to reducing production costs and improving manufacturing accuracy.

[0066] Optionally, the effective volume of the silencing cavity 15 can be changed by adjusting the depth of the partition 16 inserted into the mounting groove, thereby dynamically adjusting the silencing frequency. This design can be implemented manually or electrically to meet the noise control requirements under different operating conditions.

[0067] Optionally, a micro pressure sensor, temperature sensor or humidity sensor is integrated inside each mounting slot to monitor the physical environment inside each silencer cavity 15. These data can be used for real-time algorithm adjustment of the ECU (electronic control unit) to optimize the silencer effect and intake quality.

[0068] Optionally, a magnetic material or magnetic device can be used to form a magnetic connection between the partition 16 and the mounting slot. This not only enhances the firmness of the connection, but also reduces friction and wear by utilizing the non-contact nature of magnetism, thereby extending the service life.

[0069] Optionally, consider using composite materials (such as carbon fiber reinforced plastic CFRP) to make the installation groove of the second pipe segment 14 to reduce the overall weight, improve corrosion resistance and thermal stability. At the same time, the use of composite materials can also enhance the structural strength of the pipe segment and improve the performance of the entire system.

[0070] Optionally, a tiny acoustic lens is designed at the entrance of each installation slot. By utilizing the focusing or diverging characteristics of the acoustic lens, the propagation path of the sound waves in the silencer cavity 15 can be further optimized, thereby improving the silencer effect. At the same time, the acoustic lens can also play a certain role in dustproofing and waterproofing, thereby increasing the environmental adaptability of the system.

[0071] Furthermore, a plurality of reinforcing ribs 18 are provided on a side of the second pipe segment 14 facing away from the first pipe segment 12 , and the plurality of reinforcing ribs 18 are provided in a one-to-one correspondence with the plurality of mounting grooves.

[0072] Furthermore, a plurality of connecting tubes 19 are provided on the side of the first pipe sheet 12 facing away from the first gas flow channel 111, and a corresponding connecting tube 19 is provided in each silencer cavity 15. One end of the connecting tube 19 is connected to the intake flow channel 13, and the other end of the connecting tube 19 extends into the corresponding silencer cavity 15 and is connected to the silencer cavity 15.

[0073] Furthermore, process connection plates 20 are provided on both radial sides of at least one connecting pipe 19 , and the height of the process connection plates 20 is smaller than the height of the partition plate 16 .

[0074] Furthermore, along the length extension direction of the first pipe sheet 12 , the widths of the plurality of silencer cavities 15 are arranged to decrease in sequence.

[0075] The design of gradually decreasing widths of the muffler cavities 15 along the length of the first tube segment 12 essentially alters the effective volume and acoustic path of each cavity, thereby affecting the Helmholtz resonance frequency. This structure helps create a non-uniform muffler frequency response curve, covering a wider frequency range. In particular, it provides a continuous muffler effect from lower to mid-high frequencies, improving the overall noise control performance of the intake system.

[0076] The gradually narrowing width of the muffler cavity 15 produces a progressive attenuation effect on passing sound waves. When a sound wave enters the initially wider cavity, high-frequency components begin to be absorbed. As the cavity width decreases, mid-frequency components and even some low-frequency components are gradually attenuated. This design can more effectively handle noise sources containing multiple frequency components, avoiding the situation where a single-sized cavity is only effective for noise of a certain frequency range, thereby achieving a more balanced muffler effect.

[0077] The design of the silencer cavity 15 with successively decreasing width means that the size of the cavity is smaller at the terminal portion of the pipeline, which not only helps to reduce the volume and weight of the entire air intake system, but also helps to improve space utilization, especially in areas with limited space such as under the cab of a commercial vehicle, and can better adapt to different installation environments.

[0078] The progressively narrower flow channels improve the smoothness of gas flow, reducing eddies and turbulence, thereby reducing energy loss during intake and improving engine intake efficiency. This design also helps maintain good noise reduction performance under high-speed airflow conditions.

[0079] Optionally, in the thickness design of the first pipe sheet 12, the material thickness along its length direction can match the width change of the silencer cavity 15, that is, in the area where the cavity width is larger, the thickness of the pipe sheet is increased accordingly to improve the structural strength and sound insulation capability; and in the area where the cavity width is smaller, it is appropriately thinned to reduce the weight.

[0080] Alternatively, in addition to the gradual change in width, the cross-sectional shape of the silencer cavity 15 (e.g., circular, elliptical, rectangular) may be optimized to adapt to the attenuation of noise of different frequencies. For example, for noise of certain frequencies, a non-circular cross-section may be more effective than a circular cross-section.

[0081] Optionally, by incorporating a tiny speaker and microphone array into the system and utilizing active acoustic control technology, these systems generate sound waves with opposite phases based on real-time noise frequency and intensity, canceling out the original noise wave and further enhancing the noise cancellation effect. Active control technology can provide an additional solution, particularly for specific frequency noises that are difficult to control with passive noise cancellation structures.

[0082] Optionally, a mechanism can be designed to dynamically adjust the width of the silencer cavity 15 during operation. This can be achieved by using hydraulically, pneumatically, or electromagnetically actuated baffles that automatically adjust the cavity width based on ECU instructions to adapt to the ever-changing noise environment and engine operating conditions.

[0083] Optionally, considering the effect of temperature on the speed of sound, a small cooling or heating device is integrated in the silencing cavity 15 to dynamically adjust the temperature inside the cavity, thereby indirectly changing the propagation speed of the sound wave and the Helmholtz resonance frequency to achieve more precise noise control.

[0084] Furthermore, the commercial vehicle intake duct connection assembly also includes: a connecting shell 30, the first end of the connecting shell 30 is connected to the pipeline body 11 and the first pipe sheet 12, the interior of the connecting shell 30 is connected to the intake flow duct 13, and the connecting shell 30 is a hard pipeline; a bellows 40, the bellows 40 is connected to the second end of the connecting shell 30, the interior of the connecting shell 30 is connected to the bellows 40, the bellows 40 is made of TPV material, and the bellows 40 is flexibly arranged.

[0085] The connecting housing 30 is made of PP, forming a rigid pipe. The bellows 40 is made of TPV, featuring a corrugated structure. Adjusting the material hardness creates a flexible connection. Conventional intake pipes consist of a rigid PP pipe connected to an EPDM hose, sealed and connected by a hose clamp. However, the connecting housing 30 and bellows 40 of the present invention can be welded due to their material properties, eliminating the need for a hose clamp while still maintaining their original functionality. Furthermore, since the TPV hose wall thickness is only 50% of that of the EPDM hose, its density and material cost are similar, thus reducing costs and weight.

[0086] Since the bellows 40 is flexible, it can absorb vibrations from the engine or the road, thereby reducing the vibrations transmitted to the cabin through the intake system, improving driver comfort and the NVH (noise, vibration and harshness) performance of the entire vehicle.

[0087] The flexible design of the bellows 40 increases the freedom of movement of the intake system, making the connection between the connecting shell 30 and subsequent pipelines or other components more flexible, and maintaining good sealing and connection stability even during layout adjustments in the engine compartment or flipping in the cab.

[0088] The rigid connecting shell 30 can precisely position the intake air duct 13, while the bellows 40 made of TPV material can adapt to various tiny spatial deviations, simplify the assembly process, reduce the high precision requirements during the assembly process, and improve production efficiency and assembly consistency.

[0089] The bellows 40 can relieve stress concentration caused by thermal expansion and contraction or mechanical movement, protect the connecting shell 30 and other hard pipelines from damage due to excessive stress, and extend the service life of the system.

[0090] TPV materials not only have good flexibility and aging resistance, but also have a low density, which helps reduce the weight of the entire system. In addition, compared with metal bellows, TPV bellows are less expensive, which helps reduce overall manufacturing costs.

[0091] Optionally, the bellows 40 can dynamically adjust its length or expansion within a certain range, such as through a built-in spring or electric actuator. This can actively adapt to changes caused by cab flipping or engine thermal expansion and contraction, further improving the stability and life of the system.

[0092] Optionally, a temperature sensor and a heating / cooling element are integrated inside the bellows 40 or in the connecting shell 30 to automatically adjust the temperature of the bellows 40 according to the sensor data, compensate for the thermal expansion and contraction effects, and ensure the sealing and structural integrity of the intake system connection under different ambient temperatures.

[0093] Optionally, special acoustic damping materials, such as porous materials or viscoelastic materials, are added to the inside of the bellows 40. These materials can absorb sound waves passing through the bellows, further enhancing the noise reduction effect of the intake system, especially in terms of mid- and high-frequency noise control.

[0094] Alternatively, consider using composite materials (such as glass fiber or carbon fiber reinforced TPV) to make the bellows, which can maintain the flexibility of the bellows while improving its strength, wear resistance and high temperature resistance, making it suitable for applications under harsh working conditions.

[0095] Optionally, a quick connect and disassemble interface is used for connection, such as a magnetic connection, a snap-on connection or a quick release screw, so that when maintaining or replacing the bellows 40, there is no need to disassemble the entire air intake system, thereby improving maintenance efficiency and reducing downtime.

[0096] Furthermore, the connection shell 30 is connected to the pipeline body 11 and the first pipe sheet 12 by screws, and the connection shell 30 and the corrugated pipe 40 are welded.

[0097] Figure 3 Also shown are a guide mechanism 50 , a housing 60 , and a drainage nozzle 70 .

[0098] According to one aspect of the present invention, a vehicle is provided, including a commercial vehicle air intake duct connection assembly, wherein the commercial vehicle air intake duct connection assembly is the commercial vehicle air intake duct connection assembly described above.

[0099] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0100] The present invention provides an integrated solution for an air intake muffler with a wide frequency band and high noise reduction capability, and the transmission loss can reach more than 25dB.

[0101] The existing technology is at odds with the low level of component integration and user demand for low costs. Intake pipes require flexible connectors and metal hose clamps, which not only reduces vehicle production efficiency and increases the number of parts and costs, but also introduces leakage risks due to the increased number of interfaces. This conflicts with user demand for low cost and high reliability. This invention provides a TPV flexible connector solution integrated with rigid pipes, eliminating the hose clamps to reduce component weight and costs.

[0102] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0103] In addition to the above, it should be noted that references to "one embodiment," "another embodiment," "an embodiment," and the like in this specification refer to specific features, structures, or characteristics described in conjunction with that embodiment as included in at least one embodiment generally described in this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in conjunction with any embodiment, it is intended that such feature, structure, or characteristic, when implemented in conjunction with other embodiments, also falls within the scope of the present invention.

[0104] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0105] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A commercial vehicle air intake connection assembly, characterized in that: The invention comprises a muffler pipeline (1), wherein the muffler pipeline (1) comprises: A pipeline body (11), wherein a first gas flow channel (111) is provided in the pipeline body (11), the pipeline body (11) has an installation cavity (112), and the installation cavity (112) includes at least a portion of the first gas flow channel (111); a first tube sheet (12), the first tube sheet (12) being located in the installation cavity (112), the first tube sheet (12) being connected to the pipeline body (11), a second gas flow channel (121) being provided on a side of the first tube sheet (12) facing the first gas flow channel (111), the first gas flow channel (111) and the second gas flow channel (121) being arranged to form a closed inlet flow channel (13); A second tube sheet (14), the second tube sheet (14) is located on a side of the first tube sheet (12) away from the first gas flow channel (111), the second tube sheet (14) is connected to at least one of the pipeline main body (11) and the first tube sheet (12), at least one silencer cavity (15) is formed between the second tube sheet (14) and the first tube sheet (12), and the silencer cavity (15) is communicated with the intake flow channel (13).

2. The commercial vehicle air intake connection assembly according to claim 1, characterized in that: A plurality of partitions (16) are provided on the side of the first tube sheet (12) facing away from the first gas flow channel (111), and the plurality of partitions (16) are arranged at intervals along the length extension direction of the first tube sheet (12). A total cavity (17) is formed between the first tube sheet (12) and the second tube sheet (14), and the plurality of partitions (16) divide the total cavity (17) into a plurality of relatively independent silencer cavities (15).

3. The commercial vehicle air intake connection assembly according to claim 2, characterized in that: A plurality of mounting grooves are provided on a side of the second tube sheet (14) facing the first tube sheet (12), and the plurality of mounting grooves are provided in one-to-one correspondence with the plurality of partitions (16). When the second tube sheet (14) is connected to the first tube sheet (12), the partitions (16) extend into the corresponding mounting grooves.

4. The commercial vehicle air intake connection assembly according to claim 3, characterized in that: A plurality of reinforcing ribs (18) are provided on a side of the second pipe segment (14) facing away from the first pipe segment (12), and the plurality of reinforcing ribs (18) are provided in one-to-one correspondence with the plurality of mounting grooves.

5. The commercial vehicle air intake connection assembly according to claim 2, characterized in that: A plurality of connecting tubes (19) are provided on the side of the first pipe sheet (12) facing away from the first gas flow channel (111), and a corresponding connecting tube (19) is provided in each of the muffler cavities (15). One end of the connecting tube (19) is connected to the intake flow channel (13), and the other end of the connecting tube (19) extends into the corresponding muffler cavity (15) and is connected to the muffler cavity (15).

6. The commercial vehicle air intake connection assembly according to claim 5, characterized in that: Process connecting plates (20) are provided on both radial sides of at least one of the connecting pipes (19), and the height of the process connecting plates (20) is smaller than the height of the partition plate (16).

7. The commercial vehicle air intake connection assembly according to claim 2, characterized in that: Along the length extension direction of the first pipe sheet (12), the widths of the plurality of silencer cavities (15) are arranged to decrease in sequence.

8. The commercial vehicle air intake connection assembly according to claim 1, characterized in that: The commercial vehicle air intake connection assembly further includes: a connecting shell (30), wherein a first end of the connecting shell (30) is connected to the pipeline main body (11) and the first pipe sheet (12), an interior of the connecting shell (30) is in communication with the intake flow channel (13), and the connecting shell (30) is a hard pipeline; A bellows (40) is connected to the second end of the connecting shell (30), the interior of the connecting shell (30) is communicated with the bellows (40), the bellows (40) is made of TPV material, and the bellows (40) is flexibly arranged.

9. The commercial vehicle air intake connection assembly according to claim 8, characterized in that: The connecting shell (30), the pipeline main body (11), and the first pipe sheet (12) are all connected by screws, and the connecting shell (30) and the corrugated pipe (40) are welded.

10. A vehicle, comprising a commercial vehicle air intake connection assembly, characterized in that: The commercial vehicle air intake duct connection assembly is the commercial vehicle air intake duct connection assembly according to any one of claims 1 to 9.

Images