CN215057698U - Exhaust manifold connection structure - Google Patents
Exhaust manifold connection structure Download PDFInfo
- Publication number
- CN215057698U CN215057698U CN202121706518.9U CN202121706518U CN215057698U CN 215057698 U CN215057698 U CN 215057698U CN 202121706518 U CN202121706518 U CN 202121706518U CN 215057698 U CN215057698 U CN 215057698U
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- connecting sleeve
- air inlet
- inlet end
- exhaust manifold
- air outlet
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- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 2
- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
- 230000002159 abnormal effect Effects 0.000 abstract description 6
- 238000003466 welding Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses an exhaust manifold connecting structure, which comprises a connecting sleeve and four exhaust manifolds, wherein the air outlet ends of the four exhaust manifolds are welded together, and the outer side of the formed whole body is in a circular shape; one end of the connecting sleeve is an air inlet end, and the other end of the connecting sleeve is an air outlet end, wherein the diameter of the air inlet end is larger than that of the air outlet end; the diameter of the air inlet end of the connecting sleeve is consistent with the diameter of a circle where the air outlet ends of the four exhaust manifolds are located; the edge of the air inlet end of the connecting sleeve is bent outwards and extends to form a positioning ring, and then the edge of the air inlet end of the connecting sleeve is bent towards the direction back to the air outlet end and extends to form a guide sleeve; the radial width of the positioning ring is consistent with the thickness of the pipe wall of the exhaust manifold; the air outlet ends of the four exhaust manifolds extend into the air inlet end of the connecting sleeve and are tightly attached to the positioning ring, and the outer walls of the four exhaust manifolds are welded and fixed with the guide sleeve. The utility model discloses can eliminate noise and abnormal sound because of the step produces, reduce the NVH of car, promote the car quality.
Description
Technical Field
The utility model relates to the field of automotive technology, concretely relates to exhaust manifold connection structure.
Background
The existing integrated exhaust manifold assembly generally adopts a welding process to splice the exhaust manifolds together during assembly. After splicing, a step is typically created in the exhaust manifold vent pipe due to design or size issues. When the whole vehicle runs and the airflow in the air pipe passes through the steps at a high speed, the airflow field changes suddenly, so that squeaking or noise abnormality occurs in the whole vehicle (as shown in fig. 1 and 2).
SUMMERY OF THE UTILITY MODEL
The aforesaid that exists to prior art is not enough, the utility model aims to solve among the prior art exhaust manifold splice form the step after together and cause the car to go the problem of the abnormal noise or squeaking appear when going at a high speed, provide an exhaust manifold connection structure, can eliminate noise and abnormal sound because of the step produces, reduce the NVH of car, promote the car quality.
In order to solve the technical problem, the utility model discloses a following technical scheme:
an exhaust manifold connecting structure comprises a connecting sleeve and four exhaust manifolds, wherein the air inlet ends of the four exhaust manifolds are connected through a flange plate, the air outlet ends of the four exhaust manifolds are welded together, and the outer side surface of the formed whole body is circular; one end of the connecting sleeve is an air inlet end, the other end of the connecting sleeve is an air outlet end, wherein the diameter of the air inlet end is larger than that of the air outlet end, and the air inlet end and the air outlet end are in arc transition; the diameter of the air inlet end of the connecting sleeve is consistent with the diameter of a circle where the air outlet ends of the four exhaust manifolds are located; the edge of the air inlet end of the connecting sleeve is bent outwards and extends to form a positioning ring, and then is bent towards the direction back to the air outlet end and extends to form a guide sleeve, so that the section of the air inlet end of the connecting sleeve is in a step shape; the radial width of the positioning ring is consistent with the thickness of the pipe wall of the exhaust manifold; the air outlet ends of the four exhaust manifolds extend into the air inlet end of the connecting sleeve and are tightly attached to the positioning ring, and the outer walls of the four exhaust manifolds are welded and fixed with the guide sleeve.
The edge of the air inlet end of the connecting sleeve is bent outwards and extended to form a positioning ring, and then bent towards the direction back to the air outlet end and extended to form a guide sleeve, so that the section of the air inlet end of the connecting sleeve is in a step shape; the radial width of the positioning ring is consistent with the thickness of the pipe wall of the exhaust manifold; the air outlet ends of the four exhaust manifolds extend into the air inlet end of the connecting sleeve and are tightly attached to the positioning ring, so that the radial width of the positioning ring is consistent with the thickness of the pipe wall of the exhaust manifold, when the air outlet end of the exhaust manifold extends into the air inlet end of the connecting sleeve, part of the pipe wall of the exhaust manifold is located on the step, the inner wall of the exhaust manifold is flush with the inner wall of the connecting sleeve, the direction of air flow is not changed when the air flow enters the connecting sleeve from the exhaust manifold, no air flow disorder exists, an air passage pipeline can be guaranteed to be smooth, noise and abnormal sound are eliminated, and the quality of an automobile is improved. The outer walls of the air outlet ends of the four exhaust manifolds are welded and fixed with the guide sleeve, so that the exhaust manifolds and the connecting sleeve are firmly fixed, the reliability of the exhaust manifolds is improved, and the noise generated when air flows is reduced.
Furthermore, the guide sleeve is horn-shaped, the inner diameter of the outer end of the guide sleeve is larger than that of the inner end of the guide sleeve, so that the guide sleeve is convenient to assemble and automatically guides and positions, and meanwhile, a gap is formed between the outer end of the guide sleeve and the side wall of the exhaust manifold, so that welding construction is facilitated.
Furthermore, the air inlet end of the connecting sleeve, the positioning ring and the guide sleeve are integrally formed, so that the connecting sleeve is convenient to manufacture.
Furthermore, the exhaust manifold and the connecting sleeve are both made of stainless steel, and the stainless steel can meet the use condition of the exhaust manifold and reduce the cost.
Further, the height of connecting sleeve's uide bushing is 5~8mm, like this, can fix a position exhaust manifold, and it is the same to ensure that exhaust manifold's the degree of depth that the end of giving vent to anger stretches into connecting sleeve to guarantee the uniformity of quality.
Compared with the prior art, the utility model has the advantages of as follows:
1. the edge of the air inlet end of the connecting sleeve is bent outwards and extended to form a positioning ring, and then bent towards the direction back to the air outlet end and extended to form a guide sleeve, so that the section of the air inlet end of the connecting sleeve is in a step shape; the radial width of the positioning ring is consistent with the thickness of the pipe wall of the exhaust manifold; the air outlet ends of the four exhaust manifolds extend into the air inlet end of the connecting sleeve and are tightly attached to the positioning ring, so that the radial width of the positioning ring is consistent with the thickness of the pipe wall of the exhaust manifold, when the air outlet end of the exhaust manifold extends into the air inlet end of the connecting sleeve, part of the pipe wall of the exhaust manifold is located on the step, the inner wall of the exhaust manifold is flush with the inner wall of the connecting sleeve, the direction of air flow is not changed when the air flow enters the connecting sleeve from the exhaust manifold, no air flow disorder exists, an air passage pipeline can be guaranteed to be smooth, noise and abnormal sound are eliminated, and the quality of an automobile is improved.
2. The outer walls of the air outlet ends of the four exhaust manifolds are welded and fixed with the guide sleeve, so that the exhaust manifolds and the connecting sleeve are firmly fixed, the reliability of the exhaust manifolds is improved, and the noise generated when air flows is reduced.
Drawings
FIG. 1 is a cross-sectional view of a prior art exhaust manifold and adapter sleeve junction.
Fig. 2 is an enlarged view of fig. 1 at B.
Fig. 3 is a schematic view illustrating the connection between the exhaust manifold and the connection sleeve in the exhaust manifold connection structure of the present invention.
Fig. 4 is a cross-sectional view of the junction between the exhaust manifold and the connection sleeve according to the present invention.
Fig. 5 is an enlarged view of a portion a in fig. 4.
In the figure: the exhaust manifold 1, the connecting sleeve 2, the positioning ring 3 and the guide sleeve 4.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Example (b):
referring to fig. 3, an exhaust manifold connection structure includes a connection sleeve and four exhaust manifolds. Preferably, the exhaust manifold and the connecting sleeve are both made of stainless steel, and the stainless steel can meet the use condition of the exhaust manifold and reduce the cost. The air inlet ends of the four exhaust manifolds are connected through a flange plate, the air outlet ends are welded together, and the outer side surface of the formed whole is circular. One end of the connecting sleeve is an air inlet end, the other end of the connecting sleeve is an air outlet end, wherein the diameter of the air inlet end is larger than that of the air outlet end, and the air inlet end and the air outlet end are in arc transition. Referring to fig. 4 and 5, the diameter of the inlet end of the connecting sleeve is consistent with the diameter of the circle on which the outlet ends of the four exhaust manifolds are located. The edge of the air inlet end of the connecting sleeve is bent outwards and extends to form a positioning ring, and then is bent towards the direction back to the air outlet end and extends to form a guide sleeve, so that the section of the air inlet end of the connecting sleeve is in a step shape. The radial width of the positioning ring is consistent with the thickness of the pipe wall of the exhaust manifold. The air outlet ends of the four exhaust manifolds extend into the air inlet end of the connecting sleeve and are tightly attached to the positioning ring, and the outer walls of the four exhaust manifolds are welded and fixed with the guide sleeve. When the guide sleeve is specially implemented, the guide sleeve is horn-shaped, the inner diameter of the outer end of the guide sleeve is larger than that of the inner end of the guide sleeve, so that the guide sleeve is convenient to assemble and automatically guides and positions, and meanwhile, a gap is formed between the outer end of the guide sleeve and the side wall of the exhaust manifold, so that welding construction is facilitated. The air inlet end of the connecting sleeve, the positioning ring and the guide sleeve are integrally formed, so that the connecting sleeve is convenient to manufacture. The height of connecting sleeve's uide bushing is 5~8mm, like this, can fix a position exhaust manifold, and it is the same to ensure that exhaust manifold's the degree of depth that the end of giving vent to anger stretches into connecting sleeve to guarantee the uniformity of quality.
The edge of the air inlet end of the connecting sleeve is bent outwards and extended to form a positioning ring, and then bent towards the direction back to the air outlet end and extended to form a guide sleeve, so that the section of the air inlet end of the connecting sleeve is in a step shape; the radial width of the positioning ring is consistent with the thickness of the pipe wall of the exhaust manifold; the air outlet ends of the four exhaust manifolds extend into the air inlet end of the connecting sleeve and are tightly attached to the positioning ring, so that the radial width of the positioning ring is consistent with the thickness of the pipe wall of the exhaust manifold, when the air outlet end of the exhaust manifold extends into the air inlet end of the connecting sleeve, part of the pipe wall of the exhaust manifold is located on the step, the inner wall of the exhaust manifold is flush with the inner wall of the connecting sleeve, the direction of air flow is not changed when the air flow enters the connecting sleeve from the exhaust manifold, no air flow disorder exists, an air passage pipeline can be guaranteed to be smooth, noise and abnormal sound are eliminated, and the quality of an automobile is improved. The outer walls of the air outlet ends of the four exhaust manifolds are welded and fixed with the guide sleeve, so that the exhaust manifolds and the connecting sleeve are firmly fixed, the reliability of the exhaust manifolds is improved, and the noise generated when air flows is reduced.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and those skilled in the art should understand that those modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all should be covered in the scope of the claims of the present invention.
Claims (5)
1. An exhaust manifold connecting structure comprises a connecting sleeve and four exhaust manifolds, wherein the air inlet ends of the four exhaust manifolds are connected through a flange plate, the air outlet ends of the four exhaust manifolds are welded together, and the outer side surface of the formed whole body is circular; the air inlet end is larger than the air outlet end in diameter, and the air inlet end and the air outlet end are in arc transition; the diameter of the air inlet end of the connecting sleeve is consistent with the diameter of a circle where the air outlet ends of the four exhaust manifolds are located; the edge of the air inlet end of the connecting sleeve is bent outwards and extends to form a positioning ring, and then is bent towards the direction back to the air outlet end and extends to form a guide sleeve, so that the section of the air inlet end of the connecting sleeve is in a step shape; the radial width of the positioning ring is consistent with the thickness of the pipe wall of the exhaust manifold; the air outlet ends of the four exhaust manifolds extend into the air inlet end of the connecting sleeve and are tightly attached to the positioning ring, and the outer walls of the four exhaust manifolds are welded and fixed with the guide sleeve.
2. The exhaust manifold connecting structure according to claim 1, wherein the guide sleeve is flared such that an inner diameter of an outer end thereof is larger than an inner diameter of an inner end thereof.
3. The exhaust manifold coupling structure according to claim 1, wherein the inlet end of the coupling sleeve is integrally formed with the positioning ring and the guide sleeve.
4. The exhaust manifold connecting structure according to claim 1, wherein the exhaust manifold and the connecting sleeve are each made of stainless steel.
5. The exhaust manifold connecting structure according to claim 1, wherein the height of the guide sleeve of the connecting sleeve is 5 to 8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121706518.9U CN215057698U (en) | 2021-07-26 | 2021-07-26 | Exhaust manifold connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121706518.9U CN215057698U (en) | 2021-07-26 | 2021-07-26 | Exhaust manifold connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215057698U true CN215057698U (en) | 2021-12-07 |
Family
ID=79219237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121706518.9U Active CN215057698U (en) | 2021-07-26 | 2021-07-26 | Exhaust manifold connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215057698U (en) |
-
2021
- 2021-07-26 CN CN202121706518.9U patent/CN215057698U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 408000 111 Xinyuan Avenue, Xincheng District, Fuling District, Chongqing Patentee after: Xinyuan Automobile Co.,Ltd. Address before: 408000 111 Xinyuan Avenue, Fuling District, Chongqing Patentee before: HUACHEN XINYUAN CHONGQING AUTOMOBILE Co.,Ltd. |
|
| CP03 | Change of name, title or address |