CN215595700U - High-pressure exhaust pipe of automobile high-low pressure exhaust gas recirculation system - Google Patents
High-pressure exhaust pipe of automobile high-low pressure exhaust gas recirculation system Download PDFInfo
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- CN215595700U CN215595700U CN202121150804.1U CN202121150804U CN215595700U CN 215595700 U CN215595700 U CN 215595700U CN 202121150804 U CN202121150804 U CN 202121150804U CN 215595700 U CN215595700 U CN 215595700U
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- pressure exhaust
- gas recirculation
- recirculation system
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Abstract
The utility model provides a high-pressure exhaust pipe of an automobile high-pressure and low-pressure exhaust gas recirculation system, which comprises a first guide pipe and a second guide pipe; one end of the first guide pipe and one end of the second guide pipe are connected to the first connecting flange at a first distance; the first guide pipe is connected to the first connecting flange to form a first air inlet, and the second guide pipe is connected to the first connecting flange to form a second air inlet; the other ends of the first guide pipe and the second guide pipe are connected to the second connecting flange at a second distance; the first duct forms a first air outlet on the second connecting flange, and the second duct forms a second air outlet on the second connecting flange; the first connecting flange is connected to the engine to enable the first air inlet and the second air inlet to be communicated with an exhaust port of the engine; the second connecting flange is connected to the catalytic reactor, so that the first air outlet and the second air outlet are communicated with an air suction port of the catalytic reactor; the scheme provided by the utility model can meet the exhaust requirement and installation deviation of the vehicle and improve the assembly efficiency.
Description
Technical Field
The utility model belongs to the technical field of automobile high-pressure exhaust pipes, and particularly relates to a high-pressure exhaust pipe of an automobile high-pressure and low-pressure exhaust gas recirculation system.
Background
At present, a common automobile exhaust pipeline comprises a corrugated hard pipe, a flange, a bracket and the like, and the exhaust pipeline is connected with a catalytic reactor and an engine, so that the relative position degree of two ends is higher, and the temperature of generated exhaust gas is high at the exhaust end of the exhaust pipeline and the exhaust end of the engine; the existing exhaust pipeline has unreasonable structural design, poor applicability, short service life and can not meet the exhaust requirement of the current engine.
Based on the technical problems existing in the exhaust pipeline, no relevant solution exists; there is therefore a pressing need to find effective solutions to the above problems.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, provides a high-pressure exhaust pipe of an automobile high-pressure and low-pressure exhaust gas recirculation system, and aims to solve one of the problems of unreasonable structural design, poor applicability and short service life of the existing automobile exhaust pipe.
The utility model provides a high-pressure exhaust pipe of an automobile high-low pressure exhaust gas recirculation system, which comprises a double-guide-pipe structure; the double-conduit structure comprises a first conduit and a second conduit, wherein the first conduit and the second conduit are respectively provided with a corrugated pipe, and the inner diameters of the first conduit and the second conduit are the same; one end of the first guide pipe and one end of the second guide pipe are connected to the first connecting flange at a first distance; the first guide pipe is connected to the first connecting flange to form a first air inlet, and the second guide pipe is connected to the first connecting flange to form a second air inlet; the other ends of the first guide pipe and the second guide pipe are connected to the second connecting flange at a second distance; the first guide pipe is connected to the second connecting flange to form a first air outlet, and the second guide pipe is connected to the second connecting flange to form a second air outlet; the first and second pitches are the same; the first connecting flange is connected to the engine and enables the first air inlet and the second air inlet to be communicated with an exhaust port of the engine; the second connecting flange is connected to the catalytic reactor and enables the first air outlet and the second air outlet to be communicated with an air suction port of the catalytic reactor.
Further, the first guide pipe, the second guide pipe, the first connecting flange and the second connecting flange are respectively made of 09 stainless steel.
Further, the bellows is welded to the first and second conduits by a continuous laser.
Furthermore, the first air outlet and the second air outlet are respectively of a horn-shaped structure; and the first air outlet and the second air outlet are respectively formed in the second connecting flange.
Further, the first guide pipe and the second guide pipe are connected side by side between the first connecting flange and the second connecting flange at the same interval.
Furthermore, one end of each of the first guide pipe and the second guide pipe is bent to form a first bending section, and the first guide pipe and the second guide pipe are connected to the first connecting flange in parallel through the respective first bending sections.
Further, one end of the first bending section and one end of the corrugated pipe are fixed by continuous laser welding.
Furthermore, connecting holes are respectively formed in the periphery of the end face of the first connecting flange; and connecting holes are respectively arranged on the periphery of the end surface of the second connecting flange.
Furthermore, a connecting hole is formed in the end face of the first connecting flange and is positioned on the same side between the first air inlet and the second air inlet; and connecting holes are formed in the two sides of the end face of the first connecting flange, which are positioned on the same side of the first air inlet and the second air inlet.
Furthermore, the upper end of the end face of the second connecting flange, which is positioned on the same side of the first air outlet and the second air outlet, is provided with a connecting hole, and the lower end of the end face of the second connecting flange, which is positioned on the same side of the first air outlet and the second air outlet, is provided with a connecting hole.
According to the high-pressure exhaust pipe of the automobile high-low pressure exhaust gas recirculation system, the flexibility of the corrugated pipe is guaranteed, and the exhaust requirements of vehicles can be met; meanwhile, the mounting deviation can be well met, the assembly efficiency is improved, and the 309 stainless steel material is suitable for being used in a high-temperature environment, so that the guide pipe and the flange can adapt to more severe assembly and working environments.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The utility model will be further explained with reference to the drawings, in which:
FIG. 1 is a first schematic view of a high pressure exhaust pipe of the high and low pressure EGR system of an automobile according to the present invention;
FIG. 2 is a schematic diagram of a second high pressure exhaust pipe of the high and low pressure exhaust gas recirculation system of the present invention;
FIG. 3 is a third schematic view of a high pressure exhaust pipe of the high and low pressure EGR system of an automobile according to the present invention;
FIG. 4 is a schematic view of the connection of the bellows to the conduit according to the present invention.
In the figure: 1. a first conduit; 11. a first air inlet; 12. a first air outlet; 2. a second conduit; 21. a second air inlet; 22. a second air outlet; 3. a first connecting flange; 4. a second connecting flange; 5. a bellows; 6. and connecting the holes.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, 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 merely illustrative of the utility model and are not intended to limit the utility model.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1 to 4, the high pressure exhaust pipe of the high and low pressure exhaust gas recirculation system for an automobile according to the present invention includes a double pipe structure, that is, a double pipe design structure is adopted; specifically, the double-conduit structure comprises a first conduit 1 and a second conduit 2, wherein corrugated pipes 5 are respectively arranged on the first conduit 1 and the second conduit 2, and the inner diameters of the first conduit 1 and the second conduit 2 are the same, so that the first conduit 1 and the second conduit 2 can conduct heat circularly under the same working condition and keep the same service life; further, the first guide pipe 1 and one end of the second guide pipe 2 are connected to the first connecting flange 3 at a first distance therebetween, that is, the first connecting flange 3 is connected between one end of the gas inlet of the first guide pipe 1 and one end of the gas inlet of the second guide pipe 2 at a first distance therebetween; specifically, the first conduit 1 is connected to the first connecting flange 3 to form a first gas inlet 11, and the second conduit 2 is connected to the first connecting flange 3 to form a second gas inlet 21; similarly, the other ends of the first conduit 1 and the second conduit 2 are adjacently connected to the second connecting flange 4 at a second distance, namely, the other ends of the first conduit 1 and the second conduit 2 are connected to the second connecting flange 4 at a second distance between the gas outlet end of the first conduit 1 and the gas outlet end of the second conduit 2; specifically, the first conduit 1 is connected to the second connecting flange 4 to form a first air outlet 12, and the second conduit 2 is connected to the second connecting flange 4 to form a second air outlet 22; it should be noted that: the first spacing and the second spacing are the same, so that the working condition of an air inlet and the working condition of an air outlet of the whole exhaust pipe can be kept consistent; by adopting the scheme, the first connecting flange 3 is connected to the engine, and the first air inlet 11 and the second air inlet 21 are communicated with the exhaust port of the engine; the second connecting flange 4 is connected to the catalytic reactor, and the first air outlet 12 and the second air outlet 22 are communicated with an air suction port of the catalytic reactor, so that the exhaust gas of the engine is recycled; the high-pressure exhaust pipe of the automobile high-low pressure exhaust gas recirculation system has the advantages that the pipeline has higher exhaust performance and is more suitable for space limitation through the double-guide-pipe design structure, and the same working condition of the double guide pipes can be kept.
Preferably, in combination with the above solutions, as shown in fig. 1 to 4, the first conduit 1, the second conduit 2, the first connecting flange 3 and the second connecting flange 4 are made of 309 stainless steel materials, respectively; the 309 stainless steel is adopted, so that the first conduit 1, the second conduit 2, the first connecting flange 3 and the second connecting flange 4 have the performances of corrosion resistance and high temperature resistance and can bear the high temperature of 980 ℃.
Preferably, in combination with the above solution, as shown in fig. 1 to 4, the bellows 5 is welded to the first guide pipe 1 and the second guide pipe 2 by continuous laser, and the position of the product is ensured to the maximum extent by welding using continuous laser welding.
Preferably, in combination with the above solutions, as shown in fig. 1 to 4, the first air outlet 12 and the second air outlet 22 are respectively of a trumpet-shaped structure, so that the air outlet efficiency is higher; further, the first air outlet 12 and the second air outlet 22 are respectively formed in the second connecting flange 4, which facilitates the sealing and butt joint.
Preferably, in combination with the above solution, as shown in fig. 1 to 4, the first conduit 1 and the second conduit 2 are connected side by side between the first connecting flange 3 and the second connecting flange 4 at the same interval, so that the operating condition of the double conduit can be ensured to the maximum extent.
Preferably, with the above scheme, as shown in fig. 1 to 4, one end of each of the first conduit 1 and the second conduit 2 is bent to form a first bending section, and the first conduit 1 and the second conduit 2 are connected to the first connecting flange 3 side by side through the respective first bending sections, so that the waste heat conduction process can be effectively buffered, and the gas blockage at the gas outlet can be avoided.
Preferably, in combination with the above solution, as shown in fig. 1 to 4, one end of the first bending section and one end of the corrugated tube 5 are fixed by continuous laser welding, so that the effective sealing connection can be realized, and the position of the product can be ensured to the maximum extent.
Preferably, in combination with the above scheme, as shown in fig. 1 to 4, the peripheries of the end surfaces of the first connecting flanges 3 are respectively provided with connecting holes 6; the periphery of the end face of the second connecting flange 4 is respectively provided with a connecting hole 6, and the connecting holes 6 are respectively arranged on the periphery of the connecting flange, so that the connecting flange is convenient to connect and fix.
Preferably, in combination with the above solution, as shown in fig. 1 to 4, the connecting hole 6 is provided on the same side of the end surface of the first connecting flange 3 between the first air inlet 11 and the second air inlet 21, so as to facilitate sealing and positioning; furthermore, the two sides of the end surface of the first connecting flange 3, which are positioned on the same side of the first air inlet 11 and the second air inlet 21, are provided with connecting holes 6, so that the sealing installation is reliable.
Preferably, in combination with the above solutions, as shown in fig. 1 to 4, the upper end of the end surface of the second connecting flange 4 located on the same side of the first air outlet 12 and the second air outlet 22 is provided with a connecting hole 6, and the lower end of the end surface of the second connecting flange 4 located on the same side of the first air outlet 12 and the second air outlet 22 is provided with a connecting hole 6.
According to the high-pressure exhaust pipe of the automobile high-low pressure exhaust gas recirculation system, the flexibility of the corrugated pipe is guaranteed, and the exhaust requirements of vehicles can be met; meanwhile, the mounting deviation can be well met, the assembly efficiency is improved, and the 309 stainless steel material is suitable for being used in a high-temperature environment, so that the guide pipe and the flange can adapt to more severe assembly and working environments.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Those skilled in the art can make numerous possible variations and modifications to the described embodiments, or modify equivalent embodiments, without departing from the scope of the utility model. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technology of the present invention are within the protection scope of the present invention, unless the content of the technical solution of the present invention is departed from.
Claims (10)
1. The high-pressure exhaust pipe of the high-pressure and low-pressure exhaust gas recirculation system of the automobile is characterized in that the high-pressure exhaust pipe comprises a double-conduit structure; the double-conduit structure comprises a first conduit (1) and a second conduit (2), wherein corrugated pipes (5) are respectively arranged on the first conduit (1) and the second conduit (2), and the inner diameters of the first conduit (1) and the second conduit (2) are the same; one end of the first conduit (1) and one end of the second conduit (2) are connected to a first connecting flange (3) at a first distance; the first conduit (1) is connected to the first connecting flange (3) to form a first air inlet (11), and the second conduit (2) is connected to the first connecting flange (3) to form a second air inlet (21); the other ends of the first conduit (1) and the second conduit (2) are connected to a second connecting flange (4) at a second distance; the first conduit (1) is connected to the second connecting flange (4) to form a first air outlet (12), and the second conduit (2) is connected to the second connecting flange (4) to form a second air outlet (22); the first pitch and the second pitch are the same; the first connecting flange (3) is connected to an engine and enables the first air inlet (11) and the second air inlet (21) to be communicated with an exhaust port of the engine; the second connecting flange (4) is connected to the catalytic reactor, and the first air outlet (12) and the second air outlet (22) are communicated with an air suction port of the catalytic reactor.
2. The high pressure exhaust pipe of an automotive high and low pressure exhaust gas recirculation system according to claim 1, characterized in that the first conduit (1), the second conduit (2), the first connecting flange (3) and the second connecting flange (4) are each made of 309 stainless steel material.
3. The high pressure exhaust pipe of an automotive high and low pressure exhaust gas recirculation system according to claim 1, characterized in that the bellows (5) is welded to the first conduit pipe (1) and the second conduit pipe (2) by continuous laser welding.
4. The high pressure exhaust pipe of an automotive high and low pressure exhaust gas recirculation system according to claim 1, characterized in that said first outlet port (12) and said second outlet port (22) are each of a trumpet-shaped structure; and the first outlet port (12) and the second outlet port (22) are formed in the second connecting flange (4), respectively.
5. The high pressure exhaust pipe of an automotive high and low pressure exhaust gas recirculation system according to claim 1, characterized in that the first conduit (1) and the second conduit (2) are connected side by side at the same interval between the first connecting flange (3) and the second connecting flange (4).
6. The high pressure exhaust pipe of an automotive high and low pressure exhaust gas recirculation system according to claim 1, characterized in that one end of each of said first conduit (1) and said second conduit (2) is bent to form a first bent section, and said first conduit (1) and said second conduit (2) are connected side by side to said first connecting flange (3) through respective first bent sections.
7. The high pressure exhaust pipe of an automotive high and low pressure exhaust gas recirculation system according to claim 6, characterized in that one end of the first bent section is fixed to one end of the corrugated pipe (5) by continuous laser welding.
8. The high pressure exhaust pipe of an automotive high and low pressure exhaust gas recirculation system according to claim 1, characterized in that the peripheries of the end faces of the first connecting flanges (3) are respectively provided with connecting holes (6); and connecting holes (6) are respectively formed in the periphery of the end face of the second connecting flange (4).
9. The high pressure exhaust pipe of an automotive high and low pressure exhaust gas recirculation system according to claim 1, characterized in that a connecting hole (6) is provided on the end face of the first connecting flange (3) on the same side between the first inlet port (11) and the second inlet port (21); and connecting holes (6) are formed in the two sides of the end face of the first connecting flange (3), which are positioned on the same side of the first air inlet (11) and the second air inlet (21).
10. The high pressure exhaust pipe of an automotive high and low pressure exhaust gas recirculation system according to claim 1, characterized in that the upper end of the end face of the second connecting flange (4) on the same side as the first outlet port (12) and the second outlet port (22) is provided with a connecting hole (6), and the lower end of the end face of the second connecting flange (4) on the same side as the first outlet port (12) and the second outlet port (22) is provided with a connecting hole (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121150804.1U CN215595700U (en) | 2021-05-27 | 2021-05-27 | High-pressure exhaust pipe of automobile high-low pressure exhaust gas recirculation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121150804.1U CN215595700U (en) | 2021-05-27 | 2021-05-27 | High-pressure exhaust pipe of automobile high-low pressure exhaust gas recirculation system |
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| Publication Number | Publication Date |
|---|---|
| CN215595700U true CN215595700U (en) | 2022-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121150804.1U Active CN215595700U (en) | 2021-05-27 | 2021-05-27 | High-pressure exhaust pipe of automobile high-low pressure exhaust gas recirculation system |
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| Country | Link |
|---|---|
| CN (1) | CN215595700U (en) |
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2021
- 2021-05-27 CN CN202121150804.1U patent/CN215595700U/en active Active
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