CN219974651U - EGR outlet duct assembly and EGR cooler assembly - Google Patents
EGR outlet duct assembly and EGR cooler assembly Download PDFInfo
- Publication number
- CN219974651U CN219974651U CN202321645634.3U CN202321645634U CN219974651U CN 219974651 U CN219974651 U CN 219974651U CN 202321645634 U CN202321645634 U CN 202321645634U CN 219974651 U CN219974651 U CN 219974651U
- Authority
- CN
- China
- Prior art keywords
- egr
- assembly
- outlet duct
- pipe joint
- outlet pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000463 material Substances 0.000 claims description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 5
- 229920006231 aramid fiber Polymers 0.000 claims description 3
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000012797 qualification Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920001973 fluoroelastomer Polymers 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229920006817 PA6-GF Polymers 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000005206 flow analysis Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The utility model relates to the technical field of engine EGR systems, in particular to an EGR (exhaust gas recirculation) air outlet pipe assembly and an EGR cooler assembly. The aim is that: the EGR air outlet pipe assembly has the activity of multiple degrees of freedom, and the assembly qualification rate is improved.
Description
Technical Field
The utility model relates to the technical field of engine EGR systems, in particular to an EGR air outlet pipe assembly and an EGR cooler assembly.
Background
Under the increasingly strict requirements of emission regulations and oil consumption, the EGR technology is increasingly and widely applied to engines, an EGR pipeline is used as an important connecting piece inside an EGR system, and higher decoupling performance is one of the important indexes pursued by the design of the EGR pipeline.
Aiming at decoupling requirements in the actual assembly process of the EGR gas outlet pipe assembly, namely manufacturing errors, assembly errors and the like of the hand pieces can be accumulated to the position of an interface assembled with the EGR gas outlet pipe assembly, the assembly of the EGR gas outlet pipe assembly is easy to be difficult, and therefore an EGR gas outlet pipe with larger decoupling degree is required.
Chinese patent: CN208900876U, which discloses a highly flexible EGR pipe structure, in order to improve corrosion resistance and fatigue resistance, and to give consideration to good flexibility, the EGR pipe body adopts a stainless steel material and a corrugated structure.
However, this EGR line has the following problems:
the manufacturing process has high requirements, relates to a series of complex processes such as spot welding, brazing and the like, and the high-temperature deformation of the product in the welding process causes the position and the size of the product to change, so that the problems of position and size deviation and consistency are brought, the problem of the position and the size deviation is solved by adding an orthopedic process, the whole process flow is prolonged, and the process is increased.
Disclosure of Invention
One of the purposes of the utility model is to provide an EGR (exhaust gas Recirculation) air outlet pipe assembly, so that the EGR air outlet pipe assembly has the activity of multiple degrees of freedom, and the assembly qualification rate is improved; it is a second object to provide an EGR cooler assembly.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides an EGR outlet duct assembly, includes switching disk seat and outlet duct, outlet duct fixed connection is at the switching disk seat, the outlet duct sets up to three layer construction, three layer construction includes inlayer, enhancement layer and skin, the enhancement layer sets up between inlayer and skin, inlayer and skin all adopt flexible material.
According to the technical means, on one hand, the EGR air outlet pipe assembly can be firmly connected with the EGR cooler, meanwhile, the EGR air outlet pipe assembly has multiple degrees of freedom of movement, the decoupling range of the air outlet pipe is improved, the assembly qualification rate is improved, and the pressure fluctuation is more stable.
Further, the inner layer is made of FKM material, the reinforcing layer is made of AR aramid fiber yarn material, and the outer layer is made of VMQ material.
According to the technical means, the air outlet pipe has multiple degrees of freedom of movement, and has certain structural strength, so that the failure conditions of cracking and flattening during working are avoided.
Further, the switching disk seat includes flange, coupling and support mounting point, coupling fixed connection is on flange, the outlet duct is connected on the coupling, support mounting point fixed connection is on flange.
According to the technical means, the air outlet pipe is easier to assemble, the assembly qualification rate is improved, and meanwhile, the assembly sealing reliability is improved.
Further, a fixing piece is arranged between the air outlet pipe and the pipe joint.
According to the technical means, the firmness of connection between the air outlet pipe and the adapter valve seat is improved.
Further, a first mark is arranged on the outer layer, and a second mark is arranged on the pipe joint.
According to the technical means, the assembly consistency is improved.
Further, one side of the connecting flange is provided with an assembly hole, and a differential pressure pipe joint is connected in the assembly hole.
According to the technical means, the accuracy of pressure difference measurement after the EGR valve is improved.
The utility model also discloses an EGR cooler assembly, which comprises the EGR cooler and the EGR outlet pipe assembly.
The utility model adopting the scheme has the following advantages:
1. the air outlet pipe is designed into a three-layer structure, so that the air outlet pipe has multiple degrees of freedom of activity, has a higher decoupling range, and can avoid failure conditions of cracking and flattening in working;
2. through the cooperation of outlet duct and switching disk seat, make the assembly of outlet duct easier, improve the qualification rate of assembly, simultaneously, improve the sealed reliability of assembly.
Drawings
The utility model can be further illustrated by means of non-limiting examples given in the accompanying drawings;
FIG. 1 is a schematic view of an EGR outlet tube assembly according to an embodiment of the present utility model;
FIG. 2 is a schematic view of a transfer valve seat in an EGR outlet tube assembly according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram showing a disassembly structure of an EGR outlet tube assembly according to an embodiment of the present utility model;
FIG. 4 is a schematic view of a partial cross-sectional structure of an outlet duct in an EGR outlet duct assembly according to an embodiment of the present application.
Description of main reference numerals:
1. an air outlet pipe; 2. a fixing member; 3. a transfer valve seat; 4. an inner layer; 5. a reinforcing layer; 6. an outer layer; 7. a pipe joint; 8. a bracket mounting point; 9. a connecting flange; 10. a differential pressure pipe joint; 11. a fitting hole; 12. a first identifier; 13. and a second identification.
Detailed Description
Further advantages and effects of the present utility model will become readily apparent to those skilled in the art from the disclosure herein, by referring to the accompanying drawings and the preferred embodiments. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be understood that the preferred embodiments are presented by way of illustration only and not by way of limitation.
In the description of the present utility model, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., which are based on the azimuth or positional relationship shown in the drawings, it is merely for convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, so that the terms describing the positional relationship in the drawings are merely for exemplary illustration and are not to be construed as limiting the present utility model, and that the specific meanings of the terms described above may be understood by those of ordinary skill in the art in view of the specific circumstances, and that the terms such as "first", "second", etc. are merely used for distinguishing the description in the description of the present utility model and are not to be construed as indicating or implying relative importance.
It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
As shown in fig. 1 and 3, an embodiment of the utility model provides an EGR gas outlet pipe assembly, which comprises a switching valve seat 3 and a gas outlet pipe 1, wherein the gas outlet pipe 1 is fixedly connected to the switching valve seat 3 through a fixing piece 2. Through the mutual matching of the air outlet pipe 1 and the adapter valve seat 3, on one hand, the air outlet pipe 1 can be firmly assembled at the air outlet end of the EGR cooler, and meanwhile, the assembly qualification rate and the sealing reliability can be improved; on the other hand, the multi-degree-of-freedom movable quantity is provided, and the decoupling requirement of the multi-degree of freedom of the air outlet pipe 1 is met.
In some embodiments, as shown in fig. 2, the adapter valve seat 3 includes a connection flange 9, a pipe joint 7, and a bracket mounting point 8. The pipe joint 7 is fixedly connected to the connecting flange 9, and the air outlet pipe 1 is fixedly connected to the pipe joint 7 through the fixing piece 2, so that exhaust gas exhausted by the EGR cooler can be discharged to the air outlet pipe 1 through the connecting flange 9 and the pipe joint 7. The bracket mounting point 8 is fixedly connected to the connecting flange 9 and used for enabling the adapter valve seat 3 to be connected with other parts in a mounting way, so that the mounting stability is improved.
In this embodiment, the connection flange 9, the pipe joint 7 and the bracket mounting point 8 are integrally cast by a die casting process. The material can be selected from plastic (such as PA6-GF 30) or metal (such as aluminum alloy) integrally formed.
The support mounting point 8 is integrated with the design at the larger position of the mode of the switching valve seat 3 according to the CAE analysis result, and meanwhile, the proper mounting point structure height, thickness and the like are selected according to casting die flow analysis.
In this embodiment, as shown in fig. 2, one side of the connecting flange 9 is provided with an assembly hole 11, a differential pressure pipe joint 10 is assembled in the assembly hole 11 in an interference manner, and the differential pressure pipe joint 10 is preferably made of stainless steel, so that the differential pressure pipe joint 10 is tightly attached to the connecting flange 9 of the adapter valve seat 3, and the accuracy of differential pressure measurement after the EGR valve is ensured.
In some embodiments, as shown in fig. 4, the air outlet pipe 1 is configured as a three-layer structure, the three-layer structure includes an inner layer 4, a reinforcing layer 5 and an outer layer 6, the reinforcing layer 5 is disposed between the inner layer 4 and the outer layer 6, so that the air outlet pipe 1 has excellent flexibility and multiple degrees of freedom of movement, meets the assembly decoupling requirement, and has more stable pressure fluctuation.
In this embodiment, the inner layer 4 is made of FKM material, which is a fluororubber in the prior art, and has good oil resistance and temperature resistance, so that the fluororubber completely adapts to unburned engine oil and gasoline in EGR gas. The thickness of the inner layer 4 is 0.6-0.8mm, so that the cost can be reduced under the condition of meeting the flexibility.
In the embodiment, the reinforcing layer 5 is made of AR aramid fiber yarns, and has the thickness of 0.1-0.2mm, so that the structural strength of the air outlet pipe 1 can be enhanced, the failure conditions of cracking and flattening suction in working are avoided, and the pressure fluctuation is more stable.
In this embodiment, the outer layer 6 is made of VMQ material, which is a silicone rubber in the prior art, and has a temperature resistance of 180 degrees and a thickness of 2.5-3.0mm, so that the failure of the air outlet pipe 1 caused by cabin heat radiation can be avoided. Therefore, the whole thickness of the air outlet pipe 1 is 3.5-4mm, the air outlet pipe has good flexibility and multi-degree-of-freedom activity, and the assembly decoupling requirement is met.
In this embodiment, the two ends of the outer layer 6 are provided with the first marks 12, so that the air outlet pipe 1 is convenient to assemble. The first mark 12 is in a 'soil' shape, the pipe joint 7 is provided with a second mark 13, when the pipe joint is assembled, the first mark 12 on the air outlet pipe 1 is aligned with the second mark 13 on the pipe joint 7, and the air outlet pipe 1 and the pipe joint 7 are firmly fixed through the fixing piece 2, so that the product sealing reliability and consistency of the EGR air outlet pipe assembly are ensured.
In this embodiment, the fixing member 2 may be a worm and gear clamp, which is of the prior art, so that the detailed description will not be given, the air outlet pipe 1 and the pipe joint 7 can be firmly fixed, and the use is convenient. In some other embodiments, the fixing member 2 may also use a fixing structure in the prior art, such as a hoop, an elastic clip, and the like.
The embodiment of the utility model also discloses an EGR cooler assembly, which comprises the EGR cooler and the EGR outlet pipe assembly in the embodiment.
By employing the EGR outlet pipe assembly in the above-described embodiment in the EGR cooler assembly, decoupling of the EGR pipe can be achieved.
The utility model provides an EGR cooler assembly and an engine assembly. The description of the specific embodiments is only intended to aid in understanding the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.
It should be noted that references in the specification to "one embodiment," "an embodiment," "some alternative embodiments," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
The above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model. The technology, shape, and construction parts of the present utility model, which are not described in detail, are known in the art.
Claims (7)
1. An EGR outlet duct assembly, its characterized in that: including switching disk seat (3) and outlet duct (1), outlet duct (1) fixed connection is at switching disk seat (3), outlet duct (1) set up to three layer construction, three layer construction includes inlayer (4), enhancement layer (5) and skin (6), enhancement layer (5) set up between inlayer (4) and skin (6), inlayer (4) and skin (6) all adopt flexible material.
2. An EGR outlet duct assembly as defined in claim 1, wherein: the inner layer (4) is made of FKM material, the reinforcing layer (5) is made of AR aramid fiber yarn material, and the outer layer (6) is made of VMQ material.
3. An EGR outlet duct assembly as defined in claim 1, wherein: the adapter valve seat (3) comprises a connecting flange (9), a pipe joint (7) and a support mounting point (8), wherein the pipe joint (7) is fixedly connected to the connecting flange (9), the air outlet pipe (1) is connected to the pipe joint (7), and the support mounting point (8) is fixedly connected to the connecting flange (9).
4. An EGR outlet duct assembly according to claim 3, wherein: a fixing piece (2) is arranged between the air outlet pipe (1) and the pipe joint (7).
5. An EGR outlet duct assembly according to claim 3 or 4, wherein: the outer layer (6) is provided with a first mark (12), and the pipe joint (7) is provided with a second mark (13).
6. The EGR outlet duct assembly of claim 5, wherein: one side of the connecting flange (9) is provided with an assembly hole (11), and the assembly hole (11) is connected with a differential pressure pipe joint (10).
7. An EGR cooler assembly, characterized by: comprising an EGR cooler and an EGR outlet duct assembly according to any of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321645634.3U CN219974651U (en) | 2023-06-27 | 2023-06-27 | EGR outlet duct assembly and EGR cooler assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321645634.3U CN219974651U (en) | 2023-06-27 | 2023-06-27 | EGR outlet duct assembly and EGR cooler assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219974651U true CN219974651U (en) | 2023-11-07 |
Family
ID=88582985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321645634.3U Active CN219974651U (en) | 2023-06-27 | 2023-06-27 | EGR outlet duct assembly and EGR cooler assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219974651U (en) |
-
2023
- 2023-06-27 CN CN202321645634.3U patent/CN219974651U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104011494A (en) | Exhaust gas heat exchanger | |
| CN219974651U (en) | EGR outlet duct assembly and EGR cooler assembly | |
| CN109944721B (en) | EGR cooler for vehicle | |
| CN113339122B (en) | Exhaust manifold and power system | |
| CN213331318U (en) | Novel EGR valve connecting pipe assembly structure | |
| CN219954539U (en) | Enhancement mode multilayer S type metal bellows | |
| CN110758092A (en) | Metal oil filling pipe assembled with plastic oil pipe head | |
| CN215256514U (en) | Pipe connection structure and exhaust gas recirculation system | |
| CN220849820U (en) | Reducing corrugated pipe expansion joint for ship main engine exhaust pipeline | |
| CN215522410U (en) | Convenient upset type differential pressure pipe | |
| CN201972802U (en) | Cylinder cover water outlet pipe on marine diesel | |
| CN222496656U (en) | A tool for measuring air source humidity in simulation tests of aircraft environmental control systems | |
| CN212803376U (en) | Exhaust pipeline system of diesel fork lift truck | |
| RU194881U1 (en) | PIPE JOINT TEE | |
| CN208900875U (en) | A kind of engine EGR system high temperature pipeline | |
| CN221991203U (en) | Front-pump reducing straight-through assembly for water heating system | |
| CN206221097U (en) | A kind of vapour EGR coolers for automobile | |
| CN212985406U (en) | Connecting hose for intercooler to throttle valve | |
| CN220286757U (en) | Corrosion-resistant and leakage-proof metal expansion joint | |
| CN212900339U (en) | Carbon canister adsorption connecting pipe assembly | |
| CN219974652U (en) | EGR cooler assembly and engine assembly | |
| CN214533177U (en) | Exhaust pipe structure and car | |
| CN217463743U (en) | High-temperature-resistant EGR (exhaust gas Recirculation) connecting pipe with composite layer flow guide pipe structure | |
| CN220749398U (en) | Corrosion-resistant stainless steel flange | |
| CN220060887U (en) | High-pressure-resistant long-life metal hose |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |