CN213598086U - Exhaust sealing structure - Google Patents
Exhaust sealing structure Download PDFInfo
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- CN213598086U CN213598086U CN202021700169.5U CN202021700169U CN213598086U CN 213598086 U CN213598086 U CN 213598086U CN 202021700169 U CN202021700169 U CN 202021700169U CN 213598086 U CN213598086 U CN 213598086U
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- exhaust
- cylinder cover
- exhaust manifold
- manifold
- sealing gasket
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Abstract
The utility model relates to an exhaust seal structure belongs to the technical field of automobile design and manufacturing. The exhaust sealing structure of the utility model comprises a cylinder cover, an exhaust manifold, a sealing gasket and an air duct; the cylinder cover is provided with a plurality of exhaust holes, and the end parts of the exhaust holes are provided with mounting grooves; the exhaust manifold is provided with a plurality of exhaust ducts; the exhaust hole of the cylinder cover is opposite to the exhaust hole channel of the exhaust manifold, the sealing gasket is arranged between the opposite surfaces of the cylinder cover and the exhaust manifold, the upper end of the air guide pipe is in interference press fit in the mounting groove, the lower end of the air guide pipe is in clearance fit with the exhaust hole channel of the exhaust manifold, and the cylinder cover and the exhaust manifold are fixedly connected through bolts and clamp the sealing gasket. The utility model discloses an exhaust seal structure can avoid sealed high temperature deformation of filling up, avoids high temperature exhaust system to appear the situation of gas leakage in sealed pad department, is applicable to internal-combustion engine exhaust system, and is higher to the gas tightness requirement, and the higher air intake system of pressure also can adopt.
Description
Technical Field
The utility model relates to a technical field of automobile design and manufacturing, more specifically says, the utility model relates to an exhaust seal structure.
Background
As shown in fig. 1, in the prior art, a cylinder head 1 and an exhaust manifold 2 are sealed by clamping a gasket 3 with a bolt force, and the tightness of exhaust gas is ensured. However, since the cylinder head 1 and the exhaust manifold 2 are thermally deformed by the impact of high-temperature exhaust gas (indicated by an arrow), the surface flatness is deteriorated after the thermal deformation, so that the force applied to the gasket 3 becomes uneven, and the sealing fails. Meanwhile, the cylinder cover 1 and the exhaust manifold 2 are all metal pieces, and the sealing gasket 3 only can be selected from metal gaskets because of bearing a high-heat working environment, the three metals are overlapped together and are in high-temperature deformation, and air leakage of the structure can be caused under the action of reverse clamping force of the bolt.
SUMMERY OF THE UTILITY MODEL
For solving the above-mentioned technical problem that exists among the prior art, the utility model aims to provide an exhaust seal structure.
The utility model discloses an exhaust sealing structure, which comprises a cylinder cover, an exhaust manifold, a sealing gasket and an air duct; the cylinder cover is provided with a plurality of exhaust holes for exhausting high-temperature tail gas, and the end parts of the exhaust holes are provided with mounting grooves; the exhaust manifold is provided with a plurality of exhaust ducts; the exhaust hole of the cylinder cover is opposite to the exhaust hole of the exhaust manifold, the sealing gasket is arranged between the cylinder cover and the opposite surface of the exhaust manifold, the upper end of the air guide pipe is in interference press fit in the mounting groove, the lower end of the air guide pipe is in clearance fit with the exhaust hole of the exhaust manifold, and the cylinder cover and the exhaust manifold are fixedly connected through bolts and clamp the sealing gasket.
Wherein the axes of the exhaust hole of the cylinder cover, the exhaust duct of the exhaust manifold and the air duct are coincident.
Wherein an inner diameter of the exhaust hole passage of the exhaust manifold is larger than an inner diameter of the exhaust hole of the cylinder head.
Compared with the prior art, the utility model discloses an exhaust seal structure has following beneficial effect:
the utility model discloses an exhaust seal structure can avoid sealed high temperature deformation of filling up, avoids high temperature exhaust system to appear the situation of leaking gas in sealed pad department, is applicable to internal-combustion engine exhaust system.
Drawings
Fig. 1 is a schematic structural view of a prior art exhaust seal structure.
Fig. 2 is a schematic structural diagram of the exhaust sealing structure of the present invention.
Detailed Description
The exhaust seal structure of the present invention will be further described with reference to the following embodiments to help those skilled in the art to understand the technical solution of the present invention more completely, accurately and deeply.
Example 1
As shown in fig. 2, the exhaust sealing structure of the present embodiment includes a cylinder head 10, an exhaust manifold 20, a gasket 30, and an air guide tube 40. The cylinder cover 10 is provided with a plurality of exhaust holes 11 for exhausting high-temperature exhaust gas, and an installation groove 12 is processed at the end of each exhaust hole 11. The exhaust manifold 20 is provided with a plurality of exhaust ports 21. The exhaust hole 11 of the cylinder head 10 is arranged opposite to the exhaust duct 21 of the exhaust manifold 20, the sealing gasket 30 is arranged on the opposite surface of the cylinder head 10 and the exhaust manifold 20, the upper end of the air guide pipe 40 is in interference press fit in the mounting groove 12, the lower end of the air guide pipe 40 is in clearance fit with the exhaust duct of the exhaust manifold 20, and the cylinder head 10 and the exhaust manifold 20 are fixed through bolts and clamp the sealing gasket 30. The axes of the exhaust hole 11 of the cylinder head 10, the exhaust hole 21 of the exhaust manifold 20 and the air guide tube 40 coincide with each other, and the inner diameter of the exhaust hole 21 of the exhaust manifold 20 is larger than the inner diameter of the exhaust hole 11 of the cylinder head 10.
In this embodiment, the main gas is guided by the gas guiding tube 40, so that the main portion of the high-temperature exhaust gas directly flows along the inner wall of the gas guiding tube and flows into the exhaust duct 21 of the exhaust manifold 20 without passing through the joint surface between the cylinder head 10 and the exhaust manifold 20. And a small part of tail gas which impacts a joint surface due to high pressure of the tail gas is sealed by the sealing gasket part 3 under the action of the clamping force of the bolt, so that the gas is ensured to flow out of the pipeline system. In this embodiment, the air duct 40 serves as a positioning element between the cylinder head 10 and the exhaust manifold 20, and firstly ensures the axial alignment during assembly without misalignment, and also avoids the change of the relative position between the cylinder head 10 and the exhaust manifold 20 after the metal is thermally expanded in a high temperature state. The exhaust sealing structure of the embodiment can be applied to all exhaust systems of internal combustion engines, and air inlet systems with higher air tightness requirements and higher pressure can also be used.
For those skilled in the art, the specific embodiments are only exemplary descriptions of the present invention, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements are all within the protection scope of the present invention as long as the technical solution of the present invention is adopted.
Claims (3)
1. An exhaust seal structure characterized in that: comprises a cylinder cover, an exhaust manifold, a sealing gasket and an air duct; the cylinder cover is provided with a plurality of exhaust holes for exhausting high-temperature tail gas, and the end parts of the exhaust holes are provided with mounting grooves; the exhaust manifold is provided with a plurality of exhaust ducts; the exhaust hole of the cylinder cover is opposite to the exhaust hole of the exhaust manifold, the sealing gasket is arranged between the cylinder cover and the opposite surface of the exhaust manifold, the upper end of the air guide pipe is in interference press fit in the mounting groove, the lower end of the air guide pipe is in clearance fit with the exhaust hole of the exhaust manifold, and the cylinder cover and the exhaust manifold are fixedly connected through bolts and clamp the sealing gasket.
2. The exhaust sealing structure according to claim 1, characterized in that: the axes of the exhaust hole of the cylinder cover, the exhaust hole channel of the exhaust manifold and the air guide pipe are coincident.
3. The exhaust sealing structure according to claim 1, characterized in that: the inner diameter of the exhaust duct of the exhaust manifold is larger than the inner diameter of the exhaust hole of the cylinder head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021700169.5U CN213598086U (en) | 2020-08-15 | 2020-08-15 | Exhaust sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021700169.5U CN213598086U (en) | 2020-08-15 | 2020-08-15 | Exhaust sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213598086U true CN213598086U (en) | 2021-07-02 |
Family
ID=76584964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021700169.5U Active CN213598086U (en) | 2020-08-15 | 2020-08-15 | Exhaust sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213598086U (en) |
-
2020
- 2020-08-15 CN CN202021700169.5U patent/CN213598086U/en active Active
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