CN106224120B - The sealing structure of valve chamber cover - Google Patents
The sealing structure of valve chamber cover Download PDFInfo
- Publication number
- CN106224120B CN106224120B CN201610821377.2A CN201610821377A CN106224120B CN 106224120 B CN106224120 B CN 106224120B CN 201610821377 A CN201610821377 A CN 201610821377A CN 106224120 B CN106224120 B CN 106224120B
- Authority
- CN
- China
- Prior art keywords
- valve chamber
- chamber cover
- cylinder head
- camshaft
- seal
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 22
- 238000003825 pressing Methods 0.000 abstract description 13
- 230000007246 mechanism Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F11/00—Arrangements of sealings in combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F11/00—Arrangements of sealings in combustion engines
- F02F11/002—Arrangements of sealings in combustion engines involving cylinder heads
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The invention discloses a kind of sealing structures of valve chamber cover that can seal the valve chamber cover that faying face is arc with connecting component, including valve chamber cover and cylinder head, the indoor camshaft-bearing cap of the chamber surrounded positioned at valve chamber cover and cylinder head protrudes out to outside chamber, valve chamber cover and cylinder head, camshaft-bearing cap faying face at be provided with seal gasket, the groove depth that valve cover covers the seal groove for accommodating seal gasket is different.For the structure on the outside of this wheel bearing lid protrudes out to valve chamber cover and cylinder head surrounds chamber, the faying face of valve chamber cover and camshaft-bearing cap is not plane, valve chamber cover is designed to different groove depths from the seal groove at the faying face of camshaft-bearing cap, guarantee that the pressing force of seal gasket is essentially identical, to reach good sealing effect.
Description
Technical field
The present invention relates to automotive engine applications, and in particular to a kind of sealing structure of valve chamber cover.
Background technique
The upper surface of the cylinder head of automobile engine is equipped with valve actuating mechanism, spark plug etc., these mechanisms are by valve chamber cover
A closed space is formed with engine cylinder cap, this requires the structures and shape of valve chamber cover sealed groove and gasket
Want no-float that can just make good seal between valve chamber cover and cylinder head.
Rubber sheet gasket is mostly used to seal between gasoline engine valve chamber cover and cylinder head at present, rubber sheet gasket and valve cover
Lid is separately formed, then rubber sheet gasket is packed into inside the corresponding groove of valve chamber cover, then by installation bolt cavaera
The cover is connected with cylinder cap, forms a closed space, and for the structure of flat seal, sealing effect is ideal, is seldom produced
Raw leakage phenomenon.But having some engines due to self structure and arrangement, valve chamber cover cannot be entirely assorting
Including the components such as mechanism and camshaft-bearing cap completely include, i.e., sealing surface is not plane, valve chamber cover and camshaft bearing
Lid forms the space of a sealing with cylinder head together, and valve cover covers the screwing force distribution of the opposite rubber sheet gasket of bolt not
Uniformly, rubber sheet gasket is by pressing force difference.For this structure, if valve chamber cover and rubber sheet gasket and camshaft bearing
Between lid if poor sealing, after engine runs a period of time, the phenomenon that often will appear valve cover part permeability.
Summary of the invention
The invention discloses a kind of cavaeras that can seal the valve chamber cover that faying face is arc with connecting component
The sealing structure of the cover.
To achieve the goals above, the technical solution adopted by the present invention are as follows: a kind of sealing structure of valve chamber cover, including
Valve chamber cover and cylinder head, the indoor camshaft-bearing cap of the chamber surrounded positioned at valve chamber cover and cylinder head protrude out to chamber
Outside, valve chamber cover and cylinder head, camshaft-bearing cap faying face at be provided with seal gasket, valve cover is covered for holding
Receive seal gasket seal groove groove depth it is different.
For the structure on the outside of this wheel bearing lid protrudes out to valve chamber cover and cylinder head surrounds chamber, cavaera
The faying face of the cover and camshaft-bearing cap is not plane, by the sealing at the faying face of valve chamber cover and camshaft-bearing cap
Slot is designed to different groove depths, guarantees that the pressing force of seal gasket is essentially identical, to reach good sealing effect.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the cross-sectional view of seal groove.
Specific embodiment
In conjunction with shown in Fig. 1,2, a kind of sealing structure of valve chamber cover, including valve chamber cover 10 and cylinder head 20, position
It is protruded out to outside chamber in the indoor camshaft-bearing cap 30 of chamber that valve chamber cover 10 and cylinder head 20 surround, valve chamber cover 10
With cylinder head 20, camshaft-bearing cap 30 faying face at be provided with seal gasket 40, it is close for accommodating on valve chamber cover 10
The groove depth of the seal groove 11 of potting pad 40 is different.Valve chamber cover 10 and cylinder head 20 are protruded out to for this wheel bearing lid 30
The faying face of the structure on the outside of chamber surrounded, valve chamber cover 10 and camshaft-bearing cap 30 is not plane, for faying face
The planform at place and its distribution situation of bolt 50, to sealing at the faying face of valve chamber cover 10 and camshaft-bearing cap 30
The pressing force of rubber mat 40 carries out analytical calculation, by the seal groove 11 at the faying face of valve chamber cover 10 and camshaft-bearing cap 30
It is designed to different groove depths, guarantees that the pressing force of seal gasket 40 is essentially identical, to reach good sealing effect.
Since valve chamber cover 10 and 20 junction of cylinder head are plane, the pressing force that seal gasket 40 is subject to basic one
It causes, but it is not plane that valve chamber cover 10 and camshaft-bearing cap 30, which obtain junction, the pressing force that seal gasket 40 is subject to is each
It is not identical, in order to guarantee that plane domain is identical as the pressing force of arc area seal gasket 40, valve chamber cover 10 and cylinder head
The groove depth of the plane domain seal groove 11 of 20 junctions is identical, 30 junction of end and camshaft-bearing cap of valve chamber cover 10
Arc area seal groove 11 groove depth it is different.
Preferably, the groove depth of seal groove 11 is along the direction at the top of the corner to valve chamber cover 10 of valve chamber cover 10
Gradually deepen.Corner's pressing force distribution of arc area is smaller, so the depth of the seal groove 11 in this region is than other
Region will be shallow, and the corner from valve chamber cover 10 is increasing to top pressing force, so the depth of seal groove 11 is gradually
Deepen.
Pressing force at the top of arc area is identical as the pressing force of plane domain, the seal groove 11 at 10 top of valve chamber cover
Groove depth it is identical as the groove depth of plane domain seal groove 11 of 20 junction of valve chamber cover 10 and cylinder head.
It is emphasized that rounding off between the different seal groove 11 of groove depth, otherwise it is possible that local pressure mistake
It is big that even seal gasket 40 is damaged by pressure.
Further, it is provided with corresponding threaded hole in valve chamber cover 10 and cylinder head 20, bolt 50 passes through valve
Threaded hole in room the cover 10 and cylinder head 20 seals valve chamber cover 10, cylinder head 20, camshaft-bearing cap 30.
In order to keep the pressing force of each faying face uniform, the length direction of threaded hole is perpendicular to valve chamber cover 10 and cylinder head
20, the faying face of camshaft-bearing cap 30.
Claims (5)
1. a kind of sealing structure of valve chamber cover, including valve chamber cover (10) and cylinder head (20) are located at valve chamber cover
(10) it is protruded out to outside chamber with the indoor camshaft-bearing cap of chamber (30) that surrounds of cylinder head (20), it is characterised in that: cavaera
The cover (10) and cylinder head (20), camshaft-bearing cap (30) faying face at be provided with seal gasket (40), valve chamber cover
(10) groove depth of the seal groove (11) on for accommodating seal gasket (40) is different；
Valve chamber cover (10) is identical with the groove depth of plane domain seal groove (11) of cylinder head (20) junction, valve chamber cover
(10) groove depth of the arc area seal groove (11) of end and camshaft-bearing cap (30) junction is different；
The groove depth of seal groove (11) along the direction at the top of the corner to valve chamber cover (10) of valve chamber cover (10) gradually
Deepen.
2. the sealing structure of valve chamber cover according to claim 1, it is characterised in that: at the top of valve chamber cover (10)
The groove depth of the plane domain seal groove (11) of the groove depth and valve chamber cover (10) and cylinder head (20) junction of seal groove (11)
It is identical.
3. the sealing structure of valve chamber cover according to claim 2, it is characterised in that: the different seal groove of groove depth (11)
Between rounding off.
4. the sealing structure of valve chamber cover according to claim 3, it is characterised in that: valve chamber cover (10) and cylinder
Corresponding threaded hole is provided on lid (20), bolt (50) passes through the threaded hole on valve chamber cover (10) and cylinder head (20) will
Valve chamber cover (10), cylinder head (20), camshaft-bearing cap (30) sealing.
5. the sealing structure of valve chamber cover according to claim 4, it is characterised in that: the length direction of threaded hole is vertical
In valve chamber cover (10) and cylinder head (20), the faying face of camshaft-bearing cap (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610821377.2A CN106224120B (en) | 2016-09-13 | 2016-09-13 | The sealing structure of valve chamber cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610821377.2A CN106224120B (en) | 2016-09-13 | 2016-09-13 | The sealing structure of valve chamber cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106224120A CN106224120A (en) | 2016-12-14 |
| CN106224120B true CN106224120B (en) | 2019-01-01 |
Family
ID=58075028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610821377.2A Active CN106224120B (en) | 2016-09-13 | 2016-09-13 | The sealing structure of valve chamber cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106224120B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081154A (en) * | 2019-03-11 | 2019-08-02 | 全椒瑞禾动力机械有限公司 | A kind of gear chamber cover blank and gear chamber cover processing method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2350550A1 (en) * | 1973-10-09 | 1975-04-10 | Daimler Benz Ag | Cylinder head gasket for overhead camshaft engine - has greater thickness adjacent cylinder bore than cam shaft drive |
| CN200943534Y (en) * | 2006-06-27 | 2007-09-05 | 奇瑞汽车有限公司 | Hood cover of automobile engine valve chamber |
| JP4536765B2 (en) * | 2007-10-12 | 2010-09-01 | 石川ガスケット株式会社 | Metal gasket |
| CN103670559B (en) * | 2012-09-25 | 2016-11-16 | 重庆长安汽车股份有限公司 | A kind of direct fuel-injection engine camshaft-bearing cap |
-
2016
- 2016-09-13 CN CN201610821377.2A patent/CN106224120B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106224120A (en) | 2016-12-14 |
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