CN2667181Y - Engine air cylinder head - Google Patents
Engine air cylinder head Download PDFInfo
- Publication number
- CN2667181Y CN2667181Y CN 200320115057 CN200320115057U CN2667181Y CN 2667181 Y CN2667181 Y CN 2667181Y CN 200320115057 CN200320115057 CN 200320115057 CN 200320115057 U CN200320115057 U CN 200320115057U CN 2667181 Y CN2667181 Y CN 2667181Y
- Authority
- CN
- China
- Prior art keywords
- cylinder head
- exhaust
- engine
- stiffening rib
- shunting
- 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.)
- Expired - Fee Related
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses a cylinder head of engine, and comprises a cylinder head base body( 1 ), an exhaust duct( 2 ), and the diffluence stiffener(4) is additionally arranged at the exhaust valve guide pipe press loading hole wall(3) inside the exhaust duct( 2 ). The cylinder head of engine can not only reduce the exhaust noise, but also overcome the valve interval, the abnormal sound of cylinder head and power loss of tests caused by the changing of cold and heat engine.
Description
Technical field
The utility model relates to a kind of cylinder head, particularly is applicable to the engine cylinder head of motorcycle.
Background technique
The cylinder head exhaust outlet structure shape of existing crown bar type engine can not be controlled the generation of turbulent flow effectively, and the turbulent flow that produces in the air outlet flue latus rectum can strengthen exhaust noise; The cylinder head emission valve clearance is subjected to influence that cooling and heating machine changes than the air inlet reveal greatly in addition, reason is that the air outlet flue temperature is much higher than inlet temperature, and inlet and outlet conduit press mounting hole outer wall shape is consistent with the intensity symmetry, therefore, exhaust manifolds can not effectively be resisted by the deformation of temperatures involved generation.Though prior art has solved the deformation of the Vertical direction that the rocker arm bracket thermal expansion caused, but can not change the inclination angle deformation that exhaust manifolds are produced by high temperature, the gap that this inclination angle deformation directly causes inlet and outlet door pin and rocking arm to touch bolt changes inconsistent, make the valve clearance can not guarantee in standard adjustment value scope, not only to produce abnormal sound but also influence effect.Therefore, it is big that existing motorcycle engine cylinder head exists exhaust noise, and cause shortcomings such as cylinder head abnormal sound, power loss of tests because of valve clearance difference.
Summary of the invention
The technical problems to be solved in the utility model provides and a kind ofly can reduce exhaust noise, can more effectively overcome the valve clearance cooling and heating machine again and change the cylinder head abnormal sound that is caused, and improves the engine cylinder head of effect.
In order to solve the problems of the technologies described above, the present invention includes: cylinder head matrix, air outlet flue.The utility model engine cylinder head exhaust manifolds press mounting hole place in existing cylinder head exhaust road junction sets up a shunting stiffening rib, and this shunting stiffening rib and cylinder head matrix are cast as one, and the section of shunting stiffening rib is the ichthyoid of a rule.
Because it is the shunting stiffening rib of regular ichthyoid that the utility model cylinder head has been set up section, changed the shape and structure at exhaust road junction, improve exhaust manifolds and press-fited the effect that hole wall is resisted the high temperature thermal deformation structural strength, make exhaust valve pin and rocking arm touch gap between bolt, be subjected to the influence of exhaust manifolds inclination angle thermal deformation littler, guaranteed the conformity in inlet and outlet door gap; Simultaneously,, changed the waste gas fluidised form at exhaust road junction, exhaust flow is shunted when this place in order, played the effect that overcomes unordered pinking and produce turbulent flow, exhaust noise is improved owing to shunt the streamlined structure of stiffening rib.
Because the utility model engine cylinder head shunting stiffening rib and the cylinder head matrix set up are cast as one, only need that the micromodification change of running business into particular one can realize to the air outlet flue core, need not to increase cost.
Therefore, the utility model can provide that a kind of noise reduction synergism performance is good, the simple engine cylinder head of production technology.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is that the K of Fig. 2 is to view;
Fig. 4 is the N-N sectional view of Fig. 2.
Embodiment
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, the utility model engine cylinder head comprises cylinder head matrix 1, air outlet flue 2, in air outlet flue 2 exhaust valve guide press-fit hole wall 3 places be provided with the shunting stiffening rib 4, shunting stiffening rib 4 is cast as one with cylinder head matrix 1, and the section of shunting stiffening rib 4 is the ichthyoid of a rule.Because the effect of shunting stiffening rib 4, improve exhaust valve guide and press-fited the waste gas fluidised form that hole wall 3 is resisted the intensity of elevated temperature heat strains and changed the exhaust road junction, make exhaust valve pin 5 and rocking arm touch the gap of 6 on bolt, be subjected to the influence of exhaust manifolds inclination angle thermal deformation littler, guaranteed the conformity of valve clearance, exhaust noise is improved.
Claims (3)
1, a kind of engine cylinder head comprises cylinder head matrix (1), air outlet flue (2), it is characterized in that: in air outlet flue (2) exhaust valve guide press-fit hole wall (3) locate to be provided with the shunting stiffening rib (4);
2, engine cylinder head as claimed in claim 1 is characterized in that: described shunting stiffening rib (4) is cast as one with cylinder head matrix (1);
3, engine cylinder head as claimed in claim 1 or 2 is characterized in that: the section of described shunting stiffening rib (4) is a regular ichthyoid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320115057 CN2667181Y (en) | 2003-11-21 | 2003-11-21 | Engine air cylinder head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320115057 CN2667181Y (en) | 2003-11-21 | 2003-11-21 | Engine air cylinder head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2667181Y true CN2667181Y (en) | 2004-12-29 |
Family
ID=34345715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320115057 Expired - Fee Related CN2667181Y (en) | 2003-11-21 | 2003-11-21 | Engine air cylinder head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2667181Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105538227A (en) * | 2015-12-03 | 2016-05-04 | 重庆志成机械有限公司 | Pressing head device |
-
2003
- 2003-11-21 CN CN 200320115057 patent/CN2667181Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105538227A (en) * | 2015-12-03 | 2016-05-04 | 重庆志成机械有限公司 | Pressing head device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |