CN209053671U - A kind of embedded exhaust pipe and cylinder cover attaching structure - Google Patents
A kind of embedded exhaust pipe and cylinder cover attaching structure Download PDFInfo
- Publication number
- CN209053671U CN209053671U CN201821991534.5U CN201821991534U CN209053671U CN 209053671 U CN209053671 U CN 209053671U CN 201821991534 U CN201821991534 U CN 201821991534U CN 209053671 U CN209053671 U CN 209053671U
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- China
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- exhaust pipe
- cylinder head
- gasket
- annular groove
- cover attaching
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Abstract
The utility model relates to a kind of exhaust pipe and cylinder cover attaching structure, specifically a kind of embedded exhaust pipe and cylinder cover attaching structure belong to technical field of automobile engine.It includes cylinder head and exhaust pipe, exhaust pipe is equipped with exhaust pipe annular convex platform towards cylinder head one end, cylinder head surface is equipped with cylinder head annular groove to exhaust pipe one end, gasket is equipped in cylinder head annular groove, exhaust pipe annular convex platform protrudes into cylinder head annular groove and compress gasket.High-temp waste gas and gasket are effectively isolated by the utility model by using damascene structures, avoid erosion and corrosion of the gasket by high-temp waste gas.It solves the problems, such as that gasket uneven heating generates thermal stress, reduces the overall work temperature of gasket, improve use environment, can effectively extend the service life of gasket；The positioning that exhaust pipe installation site may be implemented by using embedded connecting structure keeps exhaust pipe installation more convenient.
Description
Technical field
The utility model relates to a kind of exhaust pipe and cylinder cover attaching structure, specifically a kind of embedded exhaust pipe with
Cylinder cover attaching structure, belongs to technical field of automobile engine.
Background technique
Currently, the connection of commercial vehicle engine exhaust pipe and cylinder head is all made of the structure type of face-flange shimming.
Be also easy to produce a degree of dilatation since exhaust pipe is heated, gasket can be squeezed lead to fail gas leakage and gasket exist by
The problem of direct erosion of high-temp waste gas is failed with corrosion.Therefore, each engine producer is sprayed by optimization using in gasket surface
Apply fire-resistant lubricants or solved using graphite Composition spacer or multilayer metal gasket exhaust pipe deformation to gasket extruding and
The problem of gasket is by high-temp waste gas erosion, to realize the connection and sealing between exhaust pipe and cylinder head.
By spraying fire-resistant lubricants in gasket surface or using graphite Composition spacer or multilayer metal gasket, certain journey
It is can solve on degree because exhaust pipe deformation causes gasket to be squeezed the problem of damaging, but the direct erosion of high-temp waste gas and corrosion is padded
Piece problem cannot solve very well.It would generally will receive directly with engine high-temperature exhaust gas contact mainly due to gasket inner edge
The directly etching of high-temp waste gas.Even because product design or assembly technology problem often lead to gasket inner hole and cylinder head exhaust duct
Hole is not perfectly aligned and occurs eccentrically mounted, will lead to direct erosion of the gasket bore section by high-temp waste gas, pads at this time
Piece other parts and cylinder head are in close contact, and due to usually there is cooling water channel at cylinder head, temperature is relatively low, will lead in gasket
Bore portion and other parts can have larger temperature gradient, and gasket itself can have bigger thermal stress.It is long-term in engine
After use, because the continuous erosion-corrosion of exhaust gas and the continuous action of thermal stress will cause gasket to occur in thermal stress larger part
Crackle or fracture and lead to gas leakage of failing, the exhaust gas of leakage can pollute atmospheric environment.
Summary of the invention
In place of the purpose of this utility model is to overcome above-mentioned deficiency, to provide a kind of embedded exhaust pipe and cylinder head
Connection structure, using in such a way that exhaust pipe increases an annular convex platform and increases an annular groove in cylinder head, utilization is embedding
The connection structure effective protection gasket for entering formula does not contact directly with high-temp waste gas, less will receive high-temp waste gas direct erosion and
Corrosion, realizes that gasket overall structure is in almost the same operating temperature, thoroughly solves gasket by exhaust gas erosion or thermal stress
Big problem, engine long-time service after, gasket will not because by exhaust gas corrosion or thermal stress it is excessive and cracked or fracture,
The sealing performance and service life of gasket can effectively be extended.
According to technical solution provided by the utility model, a kind of embedded exhaust pipe and cylinder cover attaching structure include cylinder
Exhaust pipe is bolted in cylinder head in lid and exhaust pipe, it is characterized in that: exhaust pipe is equipped with exhaust pipe towards cylinder head one end
Annular convex platform, cylinder head surface are equipped with cylinder head annular groove to exhaust pipe one end, are equipped with gasket in cylinder head annular groove, are vented pipe ring
Shape boss protrudes into cylinder head annular groove and compress gasket.
It further, is clearance fit between exhaust pipe annular convex platform and cylinder head annular groove.
Further, cylinder head surface is equipped with cylinder head mounting surface to exhaust end surfaces, and exhaust pipe is set towards cylinder head end face
There is exhaust pipe seam allowance face, is clearance fit between cylinder head mounting surface and exhaust pipe seam allowance face.
Compared with the prior art the utility model has the advantage that
The utility model structure is simple, compact, reasonable, by using damascene structures by high-temp waste gas and gasket effectively every
From avoiding erosion and corrosion of the gasket by high-temp waste gas；It solves the problems, such as that gasket uneven heating generates thermal stress, reduces pad
The overall work temperature of piece, improves use environment, can effectively extend the service life of gasket；It is tied by using embedded connection
The positioning of exhaust pipe installation site may be implemented in structure, keeps exhaust pipe installation more convenient；Gasket is closer apart from cylinder head water channel, energy
Make the reduction of gasket overall work temperature, can be used that structure is simpler and the lower monolayer metal gasket of cost realizes sealing
Function.
Detailed description of the invention
Fig. 1 is the utility model main view.
Description of symbols: 1- cylinder head, 2- exhaust pipe, 3- gasket, 4- bolt, 5- exhaust pipe annular convex platform, 6- cylinder
Lid annular groove, 7- cylinder head mounting surface, 8- exhaust pipe seam allowance face.
Specific embodiment
The utility model will be further described in conjunction with the embodiment in attached drawing below:
As shown in Figure 1, the utility model mainly includes cylinder head 1 and exhaust pipe 2, pass through the connection row of bolt 4 in cylinder head 1
Tracheae 2.
Exhaust pipe 2 is equipped with exhaust pipe annular convex platform 5 towards 1 one end of cylinder head, and cylinder head 1 is equipped with towards 2 one end of exhaust pipe
Cylinder head annular groove 6, cylinder head annular groove 6 is interior to be equipped with gasket 3, and exhaust pipe annular convex platform 5 is protruded into cylinder head annular groove 6 and pressed
Tight gasket 3.
It is clearance fit between the exhaust pipe annular convex platform 5 and cylinder head annular groove 6.
The cylinder head 1 is equipped with cylinder head mounting surface 7 towards 2 end face of exhaust pipe, and exhaust pipe 2 is set towards 1 end face of cylinder head
There is exhaust pipe seam allowance face 8, is clearance fit between cylinder head mounting surface 7 and exhaust pipe seam allowance face 8.
High-temp waste gas and gasket are effectively isolated by the utility model by using damascene structures, avoid gasket useless by high temperature
The erosion and corrosion of gas.It solves the problems, such as that gasket uneven heating generates thermal stress, reduces the overall work temperature of gasket, change
It has been apt to use environment, can have effectively extended the service life of gasket.Exhaust pipe peace may be implemented by using embedded connecting structure
The positioning of holding position keeps exhaust pipe installation more convenient.Gasket is closer apart from cylinder head water channel, can make gasket overall work temperature
It reduces, can be used that structure is simpler and the lower monolayer metal gasket of cost realizes sealing function.
Claims (3)
- It is logical in cylinder head (1) 1. a kind of embedded exhaust pipe and cylinder cover attaching structure, including cylinder head (1) and exhaust pipe (2) Bolt (4) connection exhaust pipe (2) is crossed, it is characterized in that: exhaust pipe (2) is equipped with exhaust pipe annular convex platform towards cylinder head (1) one end (5), cylinder head (1) is equipped with cylinder head annular groove (6) towards exhaust pipe (2) one end, and gasket is equipped in cylinder head annular groove (6) (3), exhaust pipe annular convex platform (5) protrudes into cylinder head annular groove (6) and compress gasket (3).
- 2. a kind of embedded exhaust pipe as described in claim 1 and cylinder cover attaching structure, it is characterized in that: the exhaust pipe ring It is clearance fit between shape boss (5) and cylinder head annular groove (6).
- 3. a kind of embedded exhaust pipe as described in claim 1 and cylinder cover attaching structure, it is characterized in that: the cylinder head (1) cylinder head mounting surface (7) are equipped with towards exhaust pipe (2) end face, exhaust pipe (2) is equipped with exhaust pipe towards cylinder head (1) end face Seam allowance face (8) is clearance fit between cylinder head mounting surface (7) and exhaust pipe seam allowance face (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821991534.5U CN209053671U (en) | 2018-11-29 | 2018-11-29 | A kind of embedded exhaust pipe and cylinder cover attaching structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821991534.5U CN209053671U (en) | 2018-11-29 | 2018-11-29 | A kind of embedded exhaust pipe and cylinder cover attaching structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209053671U true CN209053671U (en) | 2019-07-02 |
Family
ID=67054573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821991534.5U Active CN209053671U (en) | 2018-11-29 | 2018-11-29 | A kind of embedded exhaust pipe and cylinder cover attaching structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209053671U (en) |
-
2018
- 2018-11-29 CN CN201821991534.5U patent/CN209053671U/en active Active
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