CN201802501U - Motorcycle engine cylinder head - Google Patents
Motorcycle engine cylinder head Download PDFInfo
- Publication number
- CN201802501U CN201802501U CN 201020514766 CN201020514766U CN201802501U CN 201802501 U CN201802501 U CN 201802501U CN 201020514766 CN201020514766 CN 201020514766 CN 201020514766 U CN201020514766 U CN 201020514766U CN 201802501 U CN201802501 U CN 201802501U
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- China
- Prior art keywords
- cylinder head
- cooling duct
- convex tendon
- duct
- cooling
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- 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 - Lifetime
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses a motorcycle engine cylinder head, in the technical scheme, a combustion chamber, an intake passage, an exhaust passage, an airway and a spark plug mounting hole are arranged on the cylinder head, the intake passage, the exhaust passage and the spark plug mounting hole are communicated with the combustion chamber, the other end of the spark plug mounting hole is communicated with the airway, the cylinder head is provided with the intake passage at the side of the exhaust passage, the intake passage is communicated with the airway to form a cooling air passage, a first and a second cooling air passages which are communicated with the cooling air passage are respectively arranged at the left and the right sides of the intake passage, and the first cooling air passage is close to the spark plug mounting hole; and due to the design, the intake passage, the combustion chamber and four mounting bolt holes can be fully and uniformly cooled, so the inflation efficiency and the engine power are improved, the engine compression ratio is facilitated to be improved, knocking is prevented from happening, and a seal gasket is uniformly stressed, so the normal service life of the seal gasket and the good sealing of a cylinder are ensured.
Description
Technical field
The utility model relates to a kind of motorcycle engine cylinder head, particularly a kind of engine cylinder head with cooling air passway structure.
Background technique
At present, the engine cylinder head on the motorcycle is cylinder top sealing, and forms the firing chamber of motor jointly with piston head and cylinder wall.Except that the firing chamber, on cylinder head, also offer intake duct, air outlet flue and ventilation flue, intake duct and air outlet flue lay respectively at the rear portion and the front portion of cylinder head, and intake duct and air outlet flue and cylinder head firing chamber are crossing to be passed through, and forms inlet hole and exhaust port at combustor surface.Cylinder head offers air inlet duct at the air outlet flue side, offering ventilation flue away from the opposite side in timing chain chamber, ventilation flue and air inlet duct connect above the firing chamber and form L shaped cooling duct, thereby the front portion and the sidepiece of cylinder head cooled off, and while cooling combustion chamber.Spark plug also is installed in ventilation flue, and spark plug mounting hole connects ventilation flue and firing chamber, and it is used to install spark plug.
This known cooling duct can only the cooling air cylinder head front portion, sidepiece and top of combustion chamber, thereby coolant exhaust road, spark plug and firing chamber because the cylinder head inhomogeneous cooling has the problem of following several respects:
1, the intake duct for the cylinder head rear portion can't cool off, because the inlet temperature height, causes that when gases are heated, they expand, and charging efficiency is low, influences engine power; 2, the side cooling is not enough behind the firing chamber, and the firing chamber inhomogeneous cooling can't further improve engine compression ratio with the raising combustion efficiency, otherwise occur pinking easily; 3, because the cylinder head inhomogeneous cooling is even, be positioned at also inhomogeneous cooling of construction bolt hole all around, firing chamber, and because four construction bolt inhomogeneous coolings, its temperature is different with thermal expansion, be installed in the gasket seal pressurized inequality between cylinder head and the cylinder block, lost efficacy in advance easily, and caused cylinder seal bad.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of intake duct, firing chamber and four motorcycle engine cylinder heads that the construction bolt hole can both obtain fully, evenly cool off of making.
The technological scheme that its technical problem that solves the utility model adopts is:
The motorcycle engine cylinder head, offer the firing chamber on the described cylinder head, intake duct, air outlet flue, ventilation flue and spark plug mounting hole, described intake duct, air outlet flue and spark plug mounting hole communicate with the firing chamber, the other end of spark plug mounting hole and ventilation flue connect, cylinder head offers air inlet duct in the air outlet flue side, the air inlet duct formation cooling duct that is connected with described ventilation flue, the left and right sides of described intake duct be respectively arranged with communicate with described cooling duct first, second cooling duct, described first cooling duct is near described spark plug mounting hole, in described first cooling duct or the intersection of first cooling duct and ventilation flue, be provided with first convex tendon that is used to distribute the ventilation flue and the first cooling duct air quantity;
For the better air quantity that distributes the ventilation flue and first cooling duct, the height of described first convex tendon is 1/3～2/3 of the first cooling duct height; Leave the space between the side of described first convex tendon and air channel sidewall;
For the cooling air quantity that distributes the ventilation flue and first cooling duct better and play the wind-guiding effect, as improvement of the technical scheme, described first convex tendon is positioned at the intersection of described first cooling duct and ventilation flue, the sidewall almost parallel of described first convex tendon and ventilation flue, and leave the space between first convex tendon and this sidewall and roof;
Enter the cooling air quantity of second cooling duct for distribution, obtain more excellent cooling effect, as further improvement in the technical proposal, be provided with second convex tendon of the control second cooling duct air quantity in described second cooling duct, the sectional area of described second convex tendon is 1/4～3/4 of this position second cooling duct sectional area;
Be compact structure, and make second cooling duct obtain suitable cooling air, further, described second cooling duct is relative with described air inlet duct, leaves the space between the inwall of the top of described second convex tendon or bottom and described second cooling duct;
For making cooling air flow to cylinder head spark plug one side more, be provided with in described air inlet duct outlet port and be used to distribute the 3rd convex tendon that enters the cooling duct air quantity;
Further, the height of described the 3rd convex tendon is that the 1/3～2/3, the 3rd convex tendon of cooling duct height points to described ventilation flue.
The beneficial effects of the utility model are: the utility model be respectively arranged with in the left and right sides of intake duct communicate with cooling duct first, second cooling duct, two air channels of cooling air cylinder head rear portion intake duct promptly on the basis of existing L shaped cooling duct, have been increased, and two newly-increased air channels lay respectively at a left side, cylinder head rear portion, the side in construction bolt hole, right side, make intake duct, firing chamber and four construction bolt holes can both obtain fully, cooling uniformly, charging efficiency and engine power have been improved, help improving engine compression ratio, the draw up appearance of pinking, and the gasket seal pressurized is even, guarantees the normal working life of gasket seal and the excellent sealing of cylinder; In addition, be used to distribute first convex tendon of the ventilation flue and the first cooling duct air quantity, be easy to by changing the sectional area in first convex tendon and air channel of living in, or the height, width ratio, accurately the cooling air quantity of first cooling duct and ventilation flue is passed through in control, thereby makes spark plug and intake duct can obtain accurate cooling energy, the temperature of control spark plug and intake duct, make it obtain suitable operating temperature, satisfy the demand of engine performance; In addition, owing to used convex tendon to come choke, wind-guiding, the sectional area of first, second cooling duct just can suitably strengthen, and just can not influence casting qualified rate because of the excessive casting shrinking hole phenomenon that causes of wall thickness between itself and the intake duct.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model other direction;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is the B-B sectional view of Fig. 1;
Fig. 5 is the C-C sectional view of Fig. 2.
Embodiment
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, a kind of motorcycle engine cylinder head, offer firing chamber 1 on the described cylinder head, intake duct 2, air outlet flue 3, ventilation flue 4 and spark plug mounting hole 5, described intake duct 2, air outlet flue 3 and spark plug mounting hole 5 communicate with firing chamber 1, the other end of spark plug mounting hole 5 and ventilation flue 4 connect, cylinder head offers air inlet duct 6 in air outlet flue 3 sides, the air inlet duct 6 formation cooling duct that is connected with described ventilation flue 4, it is characterized in that: the left and right sides of described intake duct 2 be respectively arranged with communicate with described cooling duct first, second cooling duct 71,72, described first cooling duct 71 is near described spark plug mounting hole 5, in described first cooling duct 71 or the intersection of first cooling duct 71 and ventilation flue 4, be provided with first convex tendon 711 that is used to distribute ventilation flue 4 and first cooling duct, 71 air quantity.For the better air quantity that distributes the ventilation flue and first cooling duct, the height of described first convex tendon 711 or width are 1/3～2/3 of first cooling duct, 71 height or width.In addition, for the cooling air quantity that distributes the ventilation flue and first cooling duct better and play the wind-guiding effect, described first convex tendon 711 is positioned at the intersection of described first cooling duct 71 and ventilation flue 4, the sidewall almost parallel of described first convex tendon 711 and ventilation flue 4, and leave the space between first convex tendon 711 and this sidewall and roof.
With reference to Fig. 5, enter the cooling air quantity of second cooling duct for distribution, obtain more excellent cooling effect, be provided with second convex tendon 721 of control second cooling duct 72 air quantity in described second cooling duct 72, the sectional area of described second convex tendon 721 is 1/4～3/4 of these position second cooling duct, 72 sectional areas; In addition, for compact structure, and make second cooling duct obtain suitable cooling air, described second cooling duct 72 is relative with described air inlet duct 6, leaves the space between the inwall of the top of described second convex tendon 721 and described second cooling duct 72.
Simultaneously, flow to cylinder head spark plug one side more, be provided with in described air inlet duct 6 outlet ports and be used to distribute the 3rd convex tendon 61 that enters the cooling duct air quantity for making cooling air; The height of described the 3rd convex tendon 61 is that the 1/3～2/3, the 3rd convex tendon 61 of cooling duct height points to described ventilation flue 4.
In the operation of reality, in order to distribute the air quantity of first, second cooling duct 71,72, also can be with the reduced cross-sectional area of its exhaust outlet, thereby reduce the setting of first, second, third convex tendon 711,721,61, but because after the reduced cross-sectional area of first, second cooling duct 71,72, near the intake duct 2 wall thickness increases, so not only increased product cost, and the casting shrinking hole phenomenon occurs, and the cooling of intake duct 2 is also brought adverse influence owing to wall unevenness is even.
The utility model be respectively arranged with in the left and right sides of intake duct 2 communicate with cooling duct first, second cooling duct 71,72, two air channels of cooling air cylinder head rear portion intake duct promptly on the basis of existing L shaped cooling duct, have been increased, and two newly-increased air channels lay respectively at a left side, cylinder head rear portion, the side in construction bolt hole, right side 8, make intake duct 2, firing chamber and four construction bolt holes 8 can both obtain fully, cooling uniformly, charging efficiency and engine power have been improved, help improving engine compression ratio, the draw up appearance of pinking, and the gasket seal pressurized is even, guarantees the normal working life of gasket seal and the excellent sealing of cylinder.
In addition, be used to distribute first convex tendon 711 of ventilation flue 4 and first cooling duct, 71 air quantity, be easy to by changing the sectional area in first convex tendon 711 and air channel of living in, or the height, width ratio, accurately the cooling air quantity of first cooling duct 71 and ventilation flue 4 is passed through in control, thereby makes spark plug and intake duct can obtain accurate cooling energy, the temperature of control spark plug and intake duct, make it obtain suitable operating temperature, satisfy the demand of engine performance; In addition, owing to used convex tendon to come choke, wind-guiding, the sectional area of first, second cooling duct 71,72 just can suitably strengthen, and just can not influence casting qualified rate because of the excessive casting shrinking hole phenomenon that causes of wall thickness between itself and the intake duct 2.
Claims (9)
1. motorcycle engine cylinder head, offer firing chamber (1) on the described cylinder head, intake duct (2), air outlet flue (3), ventilation flue (4) and spark plug mounting hole (5), described intake duct (2), air outlet flue (3) and spark plug mounting hole (5) communicate with firing chamber (1), the other end of spark plug mounting hole (5) and ventilation flue (4) connect, cylinder head offers air inlet duct (6) in air outlet flue (3) side, air inlet duct (6) the formation cooling duct that is connected with described ventilation flue (4), it is characterized in that: the left and right sides of described intake duct (2) be respectively arranged with communicate with described cooling duct first, second cooling duct (71,72), described first cooling duct (71) is near described spark plug mounting hole (5).
2. according to the described motorcycle engine cylinder head of claim 1, it is characterized in that: in described first cooling duct (71) or the intersection of first cooling duct (71) and ventilation flue (4), be provided with first convex tendon (711) that is used to distribute ventilation flue (4) and first cooling duct (71) air quantity.
3. motorcycle engine cylinder head according to claim 2 is characterized in that: the height of described first convex tendon (711) is 1/3～2/3 of first cooling duct (a 71) height.
4. motorcycle engine cylinder head according to claim 3 is characterized in that: leave the space between the side of described first convex tendon (711) and air channel sidewall.
5. motorcycle engine cylinder head according to claim 3, it is characterized in that: described first convex tendon (711) is positioned at the intersection of described first cooling duct (71) and ventilation flue (4), the parallel sidewalls of described first convex tendon (711) and ventilation flue (4), and leave the space between first convex tendon (711) and this sidewall and roof.
6. according to the described arbitrary motorcycle engine cylinder head of claim 1 to 5, it is characterized in that: be provided with second convex tendon (721) of control second cooling duct (72) air quantity in described second cooling duct (72), the sectional area of described second convex tendon (721) is 1/4～3/4 of this position second cooling duct (72) sectional area.
7. motorcycle engine cylinder head according to claim 6, it is characterized in that: described second cooling duct (72) is relative with described air inlet duct (6), leaves the space between the inwall of the top of described second convex tendon (721) or bottom and described second cooling duct (72).
8. according to the described arbitrary motorcycle engine cylinder head of claim 1 to 5, it is characterized in that: be provided with in described air inlet duct (6) outlet port and be used to distribute the 3rd convex tendon (61) that enters the cooling duct air quantity.
9. motorcycle engine cylinder head according to claim 8 is characterized in that: the height of described the 3rd convex tendon (61) is that the 1/3～2/3, the 3rd convex tendon (61) of cooling duct height points to described ventilation flue (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020514766 CN201802501U (en) | 2010-09-02 | 2010-09-02 | Motorcycle engine cylinder head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020514766 CN201802501U (en) | 2010-09-02 | 2010-09-02 | Motorcycle engine cylinder head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201802501U true CN201802501U (en) | 2011-04-20 |
Family
ID=43872003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020514766 Expired - Lifetime CN201802501U (en) | 2010-09-02 | 2010-09-02 | Motorcycle engine cylinder head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201802501U (en) |
-
2010
- 2010-09-02 CN CN 201020514766 patent/CN201802501U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110420 |
|
| CX01 | Expiry of patent term |