Air inlet noise reduction device and vehicle with same
By installing an air intake noise reduction device with an expanded cylindrical cylinder on the chassis of a commercial vehicle, the engine air compressor intake noise problem is solved, noise reduction and vehicle NVH performance improvement is achieved, and it is low cost and high adaptability.
Patent Information
- Application Number
- CN202422803058.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2034-11-18
AI Technical Summary
The air intake noise of commercial vehicle engine air compressors is obvious, which affects driving comfort and the existing vehicle chassis space cannot integrate air intake noise reduction devices, resulting in increased costs and low cost performance.
An intake noise reduction device including an expanded cylindrical cylinder is designed, and the intake connection and the exhaust connection are connected through the intake bracket and the exhaust bracket, and fixed to the chassis of the commercial vehicle by means of a mounting bracket to reduce the intake noise.
Effectively reduce the working noise of the engine air compressor, improve driving comfort, and improve the NVH performance of the whole vehicle. It has a simple structure, convenient manufacturing, low cost and strong adaptability.
Smart Images
Figure CN223203151U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of air intake noise reduction devices, in particular to an air intake noise reduction device and a vehicle having the same. Background Art
[0002] Commercial vehicle chassis braking systems utilize air brakes. The vehicle chassis requires a brake air source. An engine-driven air compressor pumps air into the vehicle's brake system reservoir, providing fresh air at the required pressure. Existing commercial vehicle chassis engine air compressors lack intake noise reduction devices. Fresh air exiting the air filter enters the engine air compressor directly, generating noticeable noise both inside and outside the cab. In particular, the noise level when the compressor is pumping under load is significantly higher than when operating without a load, compromising driver and passenger comfort and contributing to poor NVH performance. The existing chassis structure precludes the integration of intake noise reduction devices. Adding these would require significant changes to the product, potentially requiring the redevelopment of specialized molds and components. This complicates the product structure and reduces interchangeability, increasing costs and resulting in a poor price-performance ratio, ultimately reducing user benefits. Summary of the Invention
[0003] The technical problem to be solved by the present invention is: in order to solve the problems existing in the above-mentioned background technology, an intake noise reduction device and a vehicle having the same are provided, which reduce the intake noise when the air compressor of the commercial vehicle engine is working, thereby improving driving comfort, enhancing the NVH performance of the whole vehicle, and enhancing the quality of the whole vehicle; the structure and process are simple, the manufacturing is simple, no special mold production is required, the installation is convenient, the interchangeability is high, the compatibility is high, the cost is low, the adaptability is strong, the cost performance is high, and it is suitable for promotion and application.
[0004] The technical solution adopted by the utility model to solve its technical problems is: an air intake noise reduction device, including an expandable cylindrical barrel, the expandable cylindrical barrel has a hollow structure, and an air intake bracket and an air outlet bracket are respectively provided at both ends of the expandable cylindrical barrel, and the air intake bracket is provided with an air intake pipe connected to the expandable cylindrical barrel; the air outlet bracket is provided with an air outlet pipe connected to the expandable cylindrical barrel; one side of the air intake bracket is bent and extended to form a vertical fixing ear, and a waist-shaped through hole is provided on the vertical fixing ear; one side of the air outlet bracket is extended to form a horizontal fixing ear, and a fastening screw is vertically passed through the horizontal fixing ear.
[0005] It is further defined that, in the above technical solution, a first outer convex circle is provided on the outer side of the end portion of the air intake pipe.
[0006] It is further defined that, in the above technical solution, a second outer convex circle is provided on the outer side of the end portion of the air outlet pipe.
[0007] It is further defined that in the above technical solution, a first mounting bracket and a second mounting bracket are respectively provided on the side walls of the expandable cylindrical body, and the first mounting bracket and the second mounting bracket are symmetrically arranged along the length direction of the expandable cylindrical body.
[0008] It is further defined that, in the above technical solution, one side of the air intake bracket is sealedly connected to the end of the expandable cylindrical barrel.
[0009] It is further defined that, in the above technical solution, one side of the air outlet bracket is sealedly connected to the end of the expandable cylindrical barrel.
[0010] A vehicle with an air intake noise reduction device is provided. The air intake noise reduction device is installed on the vehicle.
[0011] The beneficial effects of the utility model are as follows: the utility model proposes an intake noise reduction device and a vehicle equipped with the same, which reduces the intake noise when the air compressor of the commercial vehicle engine is working, thereby improving driving comfort, enhancing the NVH performance of the entire vehicle, and enhancing the quality of the entire vehicle; the structure and process are simple, the manufacturing is simple, no special mold production is required, the installation is convenient, the interchangeability is high, the compatibility is high, the cost is low, the adaptability is strong, the cost performance is high, and it is suitable for promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0013] Figure 1 It is a structural diagram of the utility model;
[0014] Figure 2 yes Figure 1 Schematic diagram of the front structure;
[0015] Figure 3 yes Figure 1 Schematic diagram of the side structure.
[0016] The numbers in the accompanying drawings are: 10, expandable cylindrical body, 20, air inlet bracket, 21, waist-shaped through hole, 30, air outlet bracket, 31, fastening screw, 40, air inlet pipe, 41, first outer convex circle, 50, air outlet pipe, 51, second outer convex circle, 60, first mounting bracket, 61, first mounting hole, 70, second mounting bracket, 71, second mounting hole, 80, vertical fixing ear, 90, horizontal fixing ear. DETAILED DESCRIPTION
[0017] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0018] In the present application, the cross-sections of the first mounting bracket 60 and the second mounting bracket 70 are both L-shaped structures. The first mounting bracket is provided with a first mounting hole 61 , and the second mounting bracket 70 is provided with a second mounting hole 71 .
[0019] See Figure 1 、 Figure 2 and Figure 3 What is shown is an air intake noise reduction device, which includes an expandable cylindrical body 10. The expandable cylindrical body 10 has a hollow structure. An air intake bracket 20 and an air outlet bracket 30 are respectively provided at both ends of the expandable cylindrical body 10. The air intake bracket 20 is provided with an air intake pipe 40 connected to the expandable cylindrical body 10; the air outlet bracket 30 is provided with an air outlet pipe 50 connected to the expandable cylindrical body 10; one side of the air intake bracket 20 is bent and extended to form a vertical fixing ear 80, and a waist-shaped through hole 21 is provided on the vertical fixing ear 80; one side of the air outlet bracket 30 is extended to form a horizontal fixing ear 90, and a fastening screw 31 is vertically passed through the horizontal fixing ear 90.
[0020] A first outer convex circle 41 is provided on the outer side of the end of the air inlet pipe 40. A second outer convex circle 51 is provided on the outer side of the end of the air outlet pipe 50. A first mounting bracket 60 and a second mounting bracket 70 are also provided on the sidewalls of the expandable cylindrical body 10. The first mounting bracket 60 and the second mounting bracket 70 are symmetrically arranged along the length of the expandable cylindrical body 10. One side of the air inlet bracket 20 is sealedly connected to the end of the expandable cylindrical body 10. One side of the air outlet bracket 30 is sealedly connected to the end of the expandable cylindrical body 10.
[0021] A vehicle with an air intake noise reduction device is installed on the vehicle.
[0022] The working principle of the intake noise reduction device is as follows:
[0023] The middle body of the air intake noise reduction device is an expandable cylindrical barrel 10, which has holes at both ends. One end of the expandable circular barrel 10 is connected to the air intake bracket 20 and the air intake pipe 40, and the other end of the expandable circular barrel 10 is connected to the air outlet bracket 30 and the air outlet pipe 50; the air intake pipe 40 is communicated with the air intake bracket 20 and the expandable circular barrel 10, and the air outlet pipe 50 is communicated with the air outlet bracket 30 and the expandable cylindrical barrel 10; the air intake bracket 20 is L-shaped, and has a mounting hole 21 and a through hole on the air intake bracket 20; a fastening screw 31 is vertically penetrated on the air outlet bracket 30; a mounting bracket 60 and a mounting bracket 70 are provided on the main expandable cylindrical barrel 10 of the air intake noise reduction device, and the mounting brackets 60 and 70 are respectively provided with a first mounting hole 61 and a second mounting hole 71. The air intake noise reduction device is a welded stainless steel assembly. The expanded cylindrical barrel 10 is a thin-walled part. The air intake bracket 20 and the air outlet bracket 30 are both thin plates. The air intake pipe 40 and the air outlet pipe 50 are thin-walled pipe fittings. The pipe end of the air intake pipe 40 has an outer convex circle 41, and the pipe end of the air outlet pipe 50 has an outer convex circle 51 for connecting the pipeline seal; the air intake bracket 20 is provided with a through hole with the same outer diameter as the air intake pipe 40 and is uniformly welded to the air intake pipe. The air outlet bracket 30 is provided with a through hole with the same outer diameter as the air intake pipe 40 and is uniformly welded to the air intake pipe. The air outlet pipe 50 has a through hole with the same outer diameter and is evenly welded to the air outlet pipe; the air inlet bracket 20 is coaxially and evenly welded to one end of the expandable cylindrical barrel 10, and the air outlet bracket 30 is coaxially and evenly welded to the other end of the expandable cylindrical barrel 10. The circular outer diameters of the air inlet bracket 20 and the air outlet bracket 30 are concentric with the outer diameter of the expandable cylindrical barrel 10 and have the same diameter. The first mounting bracket 60 and the second mounting bracket 70 are symmetrically welded to the outside of the expandable cylindrical barrel 10 respectively.
[0024] The intake noise reduction device is bolted to the commercial vehicle chassis engine via an intake bracket 20 and an outlet bracket 30. The mounting hole 21 of the intake bracket 20 allows for adjustment of the mounting position for ease of installation. Fresh air from the commercial vehicle chassis air filter is first introduced into the noise reduction device, entering through the noise reduction device intake pipe 40, passing through the expanded cylindrical barrel 10, and exiting through the noise reduction device outlet pipe 50. The air is then introduced into the engine air compressor, thereby reducing and improving the intake noise of the commercial vehicle chassis engine air compressor during operation. Mounting brackets 60 and 70 are located outside the expanded cylindrical barrel 10 of the intake noise reduction device to secure components such as the pipeline harness surrounding the vehicle chassis intake noise reduction device.
[0025] The air intake noise reduction device of the present application has the following advantages over traditional noise reduction devices:
[0026] The present application provides an intake noise reduction device and a vehicle equipped with the same. The fresh air coming out of the air filter of the commercial vehicle chassis enters the intake noise reduction device and then enters the engine air compressor. The air compressor driven by the engine body is used to provide an air source with a certain air pressure to the air reservoir of the chassis braking system of the entire vehicle. When the air compressor is working, the working noise will be reduced, especially the noise when the air compressor pumps air with load is significantly reduced and improved than the noise when the air compressor works without load. The intake noise reduction device greatly reduces and improves the intake noise of the engine air compressor of the entire vehicle chassis when it is working, thereby improving driving comfort, enhancing the NVH performance of the entire vehicle, and improving the quality of the entire vehicle. The invention of the intake noise reduction device has a simple structure, a simple process, and a simple manufacturing process. It does not require special molds for production and manufacturing, is easy to install, has high interchangeability and compatibility, low cost, strong adaptability, and high cost performance, and is suitable for promotion and application.
[0027] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. An air intake noise reduction device, characterized in that: It includes an expandable cylindrical body, which has a hollow structure. An air inlet bracket and an air outlet bracket are respectively provided at both ends of the expandable cylindrical body. The air inlet bracket is provided with an air inlet pipe connected to the expandable cylindrical body; the air outlet bracket is provided with an air outlet pipe connected to the expandable cylindrical body; one side of the air inlet bracket is bent and extended to form a vertical fixing ear, and a waist-shaped through hole is provided on the vertical fixing ear; one side of the air outlet bracket is extended to form a horizontal fixing ear, and a fastening screw is vertically passed through the horizontal fixing ear.
2. The air intake noise reduction device according to claim 1, characterized in that: A first outer convex circle is arranged on the outer side of the end portion of the air intake pipe.
3. The air intake noise reduction device according to claim 1, characterized in that: A second outer convex circle is provided on the outer side of the end portion of the air outlet pipe.
4. The air intake noise reduction device according to claim 1, characterized in that: A first mounting bracket and a second mounting bracket are respectively provided on the side walls of the expandable cylindrical body. The first mounting bracket and the second mounting bracket are symmetrically arranged along the length direction of the expandable cylindrical body.
5. The air intake noise reduction device according to claim 1, characterized in that: One side of the air intake bracket is sealed and connected to the end of the expansion cylindrical barrel.
6. The air intake noise reduction device according to claim 1, characterized in that: One side of the air outlet bracket is sealed and connected to the end of the expansion cylindrical barrel.
7. A vehicle having the air intake noise reduction device according to claim 1, characterized in that: The vehicle is equipped with an air intake noise reduction device.