Variable-wall-thickness stainless steel automobile exhaust silencing bag
By using variable wall thickness stainless steel material design in the automotive exhaust system silence package, the problem of weight reduction in the prior art cannot be achieved through optimized thickness is solved, the overall weight reduction and mechanical performance of the parts are guaranteed, and the lightweight and cost reduction of the automotive exhaust system is promoted.
Patent Information
- Application Number
- CN202421574958.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-07-04
AI Technical Summary
The existing automotive exhaust system silencer package cannot achieve weight loss through optimized thickness, resulting in a larger overall weight.
The automobile exhaust silence package is designed using variable wall thickness stainless steel material. By setting equal-thick sections and transition sections on the stainless steel shell, differentiated thickness designs at different locations are achieved, thereby achieving overall weight loss of parts.
Through the wall thickness design, the weight of the parts is minimized, while ensuring the mechanical properties of the parts, achieving lightweight and cost reduction of the automotive exhaust system.
Smart Images
Figure CN222991589U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automotive exhaust system materials, and specifically relates to a variable-wall-thickness stainless steel automotive exhaust silencer package. Background Technique
[0002] Stainless steel is used to manufacture automotive exhaust manifolds, intermediate pipes, mufflers, tail pipes, etc. The automotive exhaust system mainly functions to reduce vibration and noise (silencing) and reduce harmful gas pollution.
[0003] Automotive lightweighting is the trend of the development of existing automotive technologies, and automotive lightweighting is of great significance for automotive fuel saving, emission reduction, performance improvement, and the healthy development of the automotive industry.
[0004] An automotive exhaust silencer package is a pipe made of stainless steel, and its shape can be designed into a circular shape, an oval shape, an irregular special shape, etc. according to actual needs. Existing automotive exhaust system silencer packages are all made of stainless steel plates with equal thickness, and it is impossible to achieve weight reduction by optimizing the thickness, while a pipe with unequal wall thickness can achieve a differential design of the thickness at different positions, thereby achieving overall weight reduction of the part. Content of the Utility Model
[0005] Aiming at the deficiencies of the existing technology, the utility model provides a variable-wall-thickness stainless steel automotive exhaust silencer package, which solves the problem that the existing automotive exhaust system silencer package cannot achieve overall weight reduction of the part.
[0006] To achieve the above objectives, the utility model is realized through the following technical solutions: A variable-wall-thickness stainless steel automotive exhaust silencer package includes a stainless steel outer shell, and an equal-thickness section and a transition section are provided on the stainless steel outer shell;
[0007] The equal-thickness section includes: a first equal-thickness section, a second equal-thickness section, a third equal-thickness section, a fourth equal-thickness section, and a fifth equal-thickness section;
[0008] The transition section includes: a first transition section, a second transition section, a third transition section, and a fourth transition section.
[0009] Preferably, the thickness range of the equal-thickness section is -.-. mm, and the length of the transition section is - times the thickness difference between the two equal-thickness sections it connects.
[0010] Preferably, flanges are provided at one ends of the first equal-thickness section and the fifth equal-thickness section.
[0011] Advantageous Effects
[0012] The present utility model provides a variable-wall-thickness stainless-steel automotive exhaust silencer pack, which has the following beneficial effects: The variable-wall-thickness stainless-steel automotive exhaust silencer pack involved in the present invention is designed and reprocessed with a rolled differential-thickness plate as the blank. The rolled differential-thickness plate is a plate obtained by rolling, which connects different equal-thickness sections with a transition section of gradually changing thickness. Since there is no weld seam, while achieving a significant weight reduction, the mechanical properties of the part are guaranteed to the greatest extent.
[0013] (1) Adopt the method of variable-wall-thickness design to replace the equal-thickness silencer pack product;
[0014] (2) The design is not restricted by the stainless-steel grade, and the stainless-steel materials used for the silencer pack of the automotive exhaust system can all obtain a variable-wall-thickness silencer pack through variable-wall-thickness design;
[0015] (3) Save materials and reduce costs, and realize the lightweight of the automotive exhaust system. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is the front view of the present utility model.
[0017] Figure 2 is the partial front view cross-sectional view of the equal-thickness section and the transition section of the present utility model.
[0018] In the figure: 1. Stainless-steel outer shell, 2. First equal-thickness section, 3. First transition section, 4. Second equal-thickness section 1, 5. Second transition section, 6. Third equal-thickness section, 7. Third transition section, 8. Fourth equal-thickness section, 9. Fourth transition section, 10. Fifth equal-thickness section, 11. Flange. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0020] Please refer to Figure 1-2 , the present utility model provides a technical solution: a variable-wall-thickness stainless-steel automotive exhaust silencer pack, including a stainless-steel outer shell 1, and equal-thickness sections and transition sections are provided on the stainless-steel outer shell 1;
[0021] The equal-thickness sections include: a first equal-thickness section 2, a second equal-thickness section 4, a third equal-thickness section 6, a fourth equal-thickness section 8, and a fifth equal-thickness section 10;
[0022] The transition section includes: a first transition section 3, a second transition section 5, a third transition section 7, and a fourth transition section 9;
[0023] The silencing package of the automobile exhaust system is the most important stainless steel shell of the muffler. The baffles inside it divide the muffler into different cavities to meet the silencing effect. During the design process, when the silencing package is flanging and deforming, and at the joints where it needs to be connected and welded to other components, the wall thickness is required to be greater than a certain specific thickness. If an equal wall thickness design is adopted, only thicker stainless steel can be selected. If a variable wall thickness design is adopted, the wall thickness at different positions can be flexibly designed according to needs. On the premise of ensuring the service performance of the part, the weight of the part can be minimized to the greatest extent;
[0024] The equal thickness section and the transition section are of gradual change, Figure 2 (a) is of variable inner diameter type; Figure 2 (b) is of variable outer diameter type; Figure 2 (c) is of variable inner and outer diameter type. Sections A, B, C, D, and E are equal thickness sections, and sections F, G, H, and I are transition sections. Its design feature is that several equal thickness regions and at least one transition region are designed in the length direction, and the various equal thickness regions are connected by transition regions. The thickness range of the equal thickness regions is 0.5 - 3.5 mm, the length of the transition region is 80 - 200 times the thickness difference between the two equal thickness regions it connects, and the ratio of the thickest thickness to the thinnest thickness of the same variable wall thickness stainless steel pipe does not exceed 2.1∶1. Usually, at the flanging forming positions at both ends of the silencing package and at the middle positions where it needs to be connected and welded to other components, a thicker wall thickness can be designed, and thinner pipe walls can be used at other positions to achieve the maximum weight reduction effect.
[0025] Furthermore, the thickness range of the equal thickness section is 0.5 - 3.5 mm, and the length of the transition section is 80 - 200 times the thickness difference between the two equal thickness sections it connects.
[0026] Furthermore, flanges 11 are provided at one ends of the first equal thickness section 2 and the fifth equal thickness section 10.
[0027] Those skilled in the art connect the components in this case in sequence. For the specific connection and operation sequence, reference should be made to the following working principle. The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process.
[0028] Embodiment: In use, the stainless steel housing 1 needs to be installed in the automotive exhaust system to replace the cylindrical structure of the traditional muffler pack of the automotive exhaust system. The installation of the muffler pack of the exhaust system belongs to the existing mature technology, so the installation process thereof does not need to be described in detail. The stainless steel housing 1 is provided with a first equal-thickness section 2, a second equal-thickness section 4, a third equal-thickness section 6, a fourth equal-thickness section 8, and a fifth equal-thickness section 10, as well as a first transition section 3, a second transition section 5, a third transition section 7, and a fourth transition section 9. On the premise of ensuring the service performance of the parts, the weight of the parts is minimized. Through the variable wall thickness design, not only the weight of the automotive exhaust system is reduced, but also the service performance of the product is ensured. While saving the use of materials, the effect of cost reduction is achieved.
[0029] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation. An element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.
[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A variable wall thickness stainless steel automobile exhaust silencer package, comprising a stainless steel shell (1), characterized in that: The stainless steel shell (1) is provided with a uniform thickness section and a transition section; The equal thickness sections include: a first equal thickness section (2), a second equal thickness section (4), a third equal thickness section (6), a fourth equal thickness section (8) and a fifth equal thickness section (10); The transition section comprises: a first transition section (3), a second transition section (5), a third transition section (7) and a fourth transition section (9).
2. The variable wall thickness stainless steel automobile exhaust silencer package according to claim 1 is characterized in that: The thickness of the equal-thickness section ranges from 0.5 to 3.5 mm, and the length of the transition section is 80 to 200 times the thickness difference between the two equal-thickness sections it connects.
3. The variable wall thickness stainless steel automobile exhaust silencer package according to claim 1 is characterized in that: One end of each of the first equal-thickness section (2) and the fifth equal-thickness section (10) is provided with a flange (11).