CN219388025U - Motorcycle engine cylinder head - Google Patents
Motorcycle engine cylinder head Download PDFInfo
- Publication number
- CN219388025U CN219388025U CN202320161091.1U CN202320161091U CN219388025U CN 219388025 U CN219388025 U CN 219388025U CN 202320161091 U CN202320161091 U CN 202320161091U CN 219388025 U CN219388025 U CN 219388025U
- Authority
- CN
- China
- Prior art keywords
- air
- section
- cylinder head
- spark plug
- air outlet
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model relates to the technical field of motorcycles, in particular to a motorcycle engine cylinder head which comprises a body, wherein an air channel, an air outlet and a spark plug mounting hole are formed in the body, the air outlet and the spark plug mounting hole are respectively arranged on different sides of the body, a spark plug is arranged on the spark plug mounting hole, an air inlet of the air channel and the spark plug are arranged on the same side of the body, and an air outlet of the air channel and the air outlet are arranged on the same side of the body. The air inlet of the ventilating duct is arranged at one side of the spark plug, and the air inlet can increase the sectional area of the air inlet because the spark plug needs a certain disassembly and assembly space, and the temperature at the spark plug is highest, so that the temperature of the spark plug is reduced; and the exhaust port is arranged on one side of the exhaust port of the cylinder head body, so that the area of the air outlet is smaller than that of the air inlet, and the cooling air can be discharged from the air outlet rapidly.
Description
Technical Field
The utility model relates to the technical field of motorcycles, in particular to a motorcycle engine cylinder head.
Background
The engine can generate a large amount of heat in the combustion process, and the heat generated by the higher combustion efficiency is larger, but the large amount of heat can lead parts such as cylinder heads, cylinders, pistons and the like to bear high heat load, and if the heat dissipation effect of an engine cooling system is insufficient, the problems of larger thermal deformation of the cylinders and increased evaporation loss of engine oil are caused, so that the engine oil consumption is increased are caused.
The motorcycle of forced air cooling type is usually provided with an air duct at the cylinder head, the structure of the existing air duct is as shown in fig. 1-4, the air duct 2 arranged on the body 1 is narrow, and the air outlet 22 is small, so that the cooling air resistance is large, and the heat cannot be quickly brought out; the wall thickness at the top of the cylinder head combustion chamber 6 is uneven, so that the heat dissipation performance of the cylinder head combustion chamber part is poor; without a diversion design, the cooling air is easy to generate turbulent flow in the ventilating duct, and the cooling effect is reduced; the air inlet section 23 and the air outlet section 24 of the ventilating duct 2 are approximately vertical, and the cooling air can collide with the wall at the position passing through the included angle, so that the flow velocity of the cooling air is reduced, and the heat dissipation effect is further reduced. The above problems result in poor cooling effect of the existing air duct structure.
The utility model patent CN2613606Y proposes a motorcycle engine cylinder head with a cooling air duct, wherein the cylinder head is provided with an air duct, and a separation sheet is arranged in the air duct, so that the problem that cooling air generates turbulence in the air duct can be solved, the heat exchange area of the separation sheet can be increased, and the heat dissipation efficiency is improved. However, the air inlet is arranged at one side of the air outlet, and the air outlet is arranged at the air outlet side, so that the air inlet is reduced in size and the air inlet quantity is reduced, and the heat dissipation effect is reduced due to the fact that the air outlet is arranged at the air outlet side and the position of the air outlet side is limited.
Disclosure of Invention
The utility model aims to provide a motorcycle engine cylinder head so as to solve the problem that the existing motorcycle is poor in heat dissipation effect.
In order to achieve the above purpose, the technical scheme of the utility model is as follows: the utility model provides a motorcycle engine cylinder end, includes the body, has seted up air flue, gas vent and spark plug mounting hole on the body, and gas vent and spark plug mounting hole set up respectively in the different sides of body, are equipped with the spark plug on the spark plug mounting hole, the air intake and the spark plug of air flue set up in the same side of body, and the air outlet and the gas vent setting of air flue are in the same side of body.
The air inlet of the ventilating duct is arranged at one side of the spark plug, and the air inlet can increase the sectional area of the air inlet because the spark plug needs a certain disassembly and assembly space, and the temperature at the spark plug is highest, so that the temperature of the spark plug is reduced; and the exhaust port is arranged on one side of the exhaust port of the cylinder head body, so that the area of the air outlet is smaller than that of the air inlet, and the cooling air can be discharged from the air outlet rapidly.
Further, the air duct is arranged at the upper part of the combustion chamber, and the wall thickness between the air duct and the combustion chamber is uniform.
The uniform wall thickness makes the difference of heat dissipation effect of the combustion chamber smaller and reduces the thermal deformation of the combustion chamber.
Further, the inner wall of the ventilating duct above the combustion chamber is spherical, the inner wall of the upper part of the combustion chamber is also spherical, and the spherical inner wall of the ventilating duct is concentric with the spherical inner wall of the combustion chamber.
The spherical inner wall can increase the heat radiation area of the combustion chamber, thereby improving the heat radiation effect.
Further, the air duct is provided with a first accelerating section, and the cross-sectional area of the first accelerating section is gradually reduced along the flow direction of the cooling air, so that the cooling air is accelerated in the first accelerating section.
Cooling air accelerates in the first accelerating section, can improve air inlet speed, increases the heat exchange efficiency between body and the cooling air, promotes the radiating effect.
Further, the first accelerating section is arranged at the spherical inner wall of the air channel, and the inner wall of the other side opposite to the spherical inner wall is approximately linear, so that the cross section of the spherical inner wall of the air channel is smaller than the air inlet, and the first accelerating section is formed to accelerate cooling air in the first accelerating section.
The linear side wall is simpler to manufacture and cooperates with the spherical inner wall such that the cross section thereof is smaller than the air inlet opening, thereby forming a first acceleration stage.
Further, the ventilating duct is divided into an air inlet section and an air outlet section, and the inner wall of the joint of the air inlet section and the air outlet section is arc-shaped, so that the flow direction of cooling air from the air inlet section to the air outlet section is effectively guided.
The cooling wind guided by the more reasonable arc wall surface can effectively avoid the phenomenon that the cooling wind hits the wall, reduce the resistance of the cooling wind, increase the air intake, and enable the cooling wind to be smoother, thereby improving the heat dissipation effect of the combustion chamber.
Further, a guide block is arranged at the part of the air inlet section, which is close to the air outlet section, so that the ventilating duct of the air inlet section is divided into two parts, and the surface of the guide block is arc-shaped.
The air guide block can effectively prevent the cooling air from generating turbulence in the ventilating duct, and the arc-shaped air guide block is matched with the arc-shaped inner wall at the joint of the air inlet section and the air outlet section, so that the cooling air can be smoothly turned from the air inlet section to the air outlet section.
Further, the cross section of the middle part of the air outlet section is smaller than the cross sections of the two ends, so that cooling air is accelerated in the middle part of the air outlet section.
The cooling air can be accelerated in the air outlet section, so that the flow speed of the cooling air can be further improved, and the heat dissipation effect of the cylinder head is further improved.
Further, the air outlet extends in the longitudinal direction of the body.
The longitudinal extension of the air outlet can enlarge the area of the air outlet, increase the air inlet quantity of cooling air and improve the cooling effect of the cylinder head.
The utility model has the following beneficial effects: the air inlet and the air outlet of the ventilating duct are respectively arranged at one side of the spark plug and one side of the air outlet, the temperature of cooling air at the air inlet is the lowest, the temperature of the spark plug can be effectively reduced, and certain space is required for dismounting the spark plug; two cooling air accelerating positions are arranged in the ventilating duct, the cooling air is accelerated twice and has a high flow speed, and the heat dissipation effect of the cylinder head is further improved; the ventilating duct is internally provided with a plurality of arc-shaped inner walls, so that the flowing resistance of cooling air is reduced, and the cooling air flows smoothly; the concentric spherical inner wall is arranged between the ventilating duct and the combustion chamber, so that the heat dissipation area of the combustion chamber can be enlarged, and the heat dissipation effect is improved.
Drawings
FIG. 1 is a front view of a prior art engine cylinder head;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a sectional view B-B of FIG. 1;
FIG. 4 is a right side view of a prior art engine cylinder head;
FIG. 5 is a front view of the engine cylinder head of the present utility model;
FIG. 6 is a cross-sectional view of C-C of FIG. 5;
FIG. 7 is a sectional view D-D of FIG. 5 (with the arrow thin solid lines in the drawing showing the direction of cooling wind);
FIG. 8 is a cross-sectional E-E view of FIG. 7 (with the thick dashed arrow lines in the figure indicating the direction of combustor heat dissipation);
FIG. 9 is a right side view of the engine cylinder head of the present utility model;
wherein: 1 body, 2 air ducts, 21 air inlets, 22 air outlets, 23 air inlet sections, 24 air outlet sections, 3 air inlets, 4 air outlets, 5 spark plug mounting holes, 6 combustion chambers and 7 flow guide blocks.
Detailed Description
For further illustration of the various embodiments, the utility model is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible embodiments and advantages of the present utility model. The components in the figures are not drawn to scale and like reference numerals are generally used to designate like components.
Referring to fig. 5 to 9, as an embodiment of the present utility model, there is provided a motorcycle engine cylinder head comprising a body 1, and an air duct 2, an air intake hole, an air exhaust hole, a spark plug mounting hole 5, a combustion chamber 6 provided on the body. The body 1 has a plurality of sides, and the air duct 2 is used for forming cooling air in the interior thereof so as to take away heat generated when the engine works, and the temperature of the engine is maintained at a reasonable level. The intake hole is for air to enter the combustion chamber 6 therethrough, the exhaust hole is for exhaust gas generated in the combustion chamber 6 to be discharged to the outside of the engine therethrough, the spark plug mounting hole 5 is for mounting a spark plug to ignite the gas in the combustion chamber 6, and the combustion chamber 6 is for mixing air and fuel and burning the fuel to generate power for driving the motorcycle. The air inlet hole, the air outlet hole and the spark plug mounting hole 5 are all arranged above the combustion chamber 6 and are respectively communicated with the combustion chamber 6, the air inlet 3 at the end part of the air inlet hole and the air outlet 4 at the end part of the air outlet hole are respectively arranged on opposite sides (left and right sides in the figure) of the body 1, and the end part of the spark plug mounting hole 5 is arranged on the other side (front side in the figure) on the side different from the air inlet 3 and the air outlet 4.
Referring to fig. 6 to 8, the air duct 2 is disposed above the combustion chamber 6, the air inlet 21 and the spark plug mounting hole 5 are disposed on the same side of the body 1, and the air outlet 22 of the air duct 2 and the air outlet 4 at the tail end of the air outlet are disposed on the same side of the body 1, so that the air inlet 21 and the air outlet 22 of the air duct 2 are disposed on two sides of the body, respectively, so that the air duct 2 surrounds at a position where the temperature of the cylinder head is high, and cooling wind can take away the heat of the cylinder head more. Because the air inlet 3 and the air outlet 4 are respectively arranged on the air inlet side and the air outlet side of the cylinder head body 1, the air inlet 21 is arranged on the two sides, and the section of the air inlet 21 is influenced, the air inlet 21 is arranged on the spark plug side, the structural characteristics of the cylinder head can be fully utilized, and the air quantity of the combustion part of the cooling cylinder head can be increased. Because the spark plug needs great installation space, so with the area that the air intake 21 set up here can increase air intake 21, and the temperature of spark plug is the highest, the air intake 21 sets up in spark plug mounting hole 5 one side to the cooling effect of spark plug better, ensures the ignition quality and the working life of spark plug. The air outlet 22 is disposed at one side of the air outlet 4, the temperature of the air outlet 4 is high, and the air outlet 22 is disposed at the side to radiate heat to the air outlet 4. Referring to fig. 9, the air outlet 22 extends longitudinally to enlarge the cross section of the air outlet 22, reduce the flow resistance of the cooling air and increase the proportion of the cooling air flowing to the cylinder head, i.e. increase the air intake of the part of the cooling cylinder head, so as to cool the part of the cylinder head combustion chamber 6 more effectively.
Referring to fig. 8, since the combustion chamber 6 is a place where combustion occurs, the temperature of the combustion chamber 6 is high, and therefore, the heat dissipation effect of the combustion chamber 6 should be improved, and for this purpose, the wall thickness between the combustion chamber 6 and the air duct 2 is set to be uniform, the heat dissipation difference across the combustion chamber 6 is reduced, and the thermal deformation is reduced. Since the top of the combustion chamber 6 is spherical, the inner wall of the air duct 2 above the combustion chamber 6 is spherical and concentric with the spherical inner wall of the combustion chamber 6, so that the wall thickness between the combustion chamber 6 and the air duct 2 can be ensured to be uniform, the heat dissipation area of the combustion chamber can be increased, and the heat dissipation effect (thick dotted line in the figure) can be improved.
As shown in fig. 6 to 7, since the exhaust port 4 and the plug mounting hole 5 are provided on the left and right sides of the main body and both sides thereof are substantially vertical, the air inlet 21 and the air outlet 22 of the air duct 2 are provided on both substantially vertical sides of the main body 1, and thus the cooling air path of the tunnel air 2 is substantially vertical, and thus the cooling air may collide with the wall at the substantially vertical turning point. In order to avoid the cooling air from 'bumping into the wall', the ventilation channel 2 is divided into an air inlet section 23 and an air outlet section 24 by taking a turning position as a boundary, and the inner wall of the connection position of the air inlet section 23 and the air outlet section 24 is arranged into an arc shape, so that the cooling air flows more smoothly at the connection position. Because the air inlet section 23 and the air outlet section 24 are approximately vertical, the cross section area of the joint of the air inlet section 23 and the air outlet section 24 is larger, in order to avoid forming turbulence at the turning position with larger cross section area, the air inlet section 23 of the ventilating duct 2 is provided with the flow guiding block 7, in this example, the flow guiding block 7 is a flow guiding plate with two arc-shaped sides, and the upper side and the lower side of the flow guiding plate are both connected with the inner wall of the ventilating duct 2, so that the air inlet section 23 is divided into two parts with the cross section area close to each other, the cooling air is divided into two paths to respectively pass through the turning position, and the turbulence of the cooling air is avoided. The arc inner wall of the junction of the air inlet duct 23 and the air outlet duct 24 is combined with the arc side surface of the deflector, and the cooling air passes through the turning part in a smoother path.
Referring to fig. 6 to 7, the faster the flow rate of the cooling air, the shorter the time for heat exchange with the cylinder head, the smaller the temperature difference of the cooling air before and after passing through the air duct 2, and the larger the temperature difference between the cooling air and the cylinder head body 1, accordingly, the higher the heat exchange efficiency between the cooling air and the cylinder head, and therefore, in order to improve the heat radiation effect of the cylinder head, the flow rate of the cooling air should be increased. For this reason, two acceleration sections are provided in the air duct, the first of which is the air intake to above the top end of the combustion chamber 6, and from the above, it is known that the lower inner wall of the air duct 2 is spherical, and the upper inner wall opposite to the spherical inner wall is substantially linear, so that the cross-sectional area of the air duct is reduced and then enlarged along the flow direction of the cooling air, and the flow velocity of the cooling air is increased when passing through the position where the cross-sectional area is small. The second accelerating section is disposed at the air outlet section 24, and the cross-sectional area of the middle portion of the air outlet section 24 is smaller than that of the two ends, so that the flow rate of the cooling air increases again when passing through the position where the cross-sectional area is smaller. Therefore, the cooling air reaches a larger flow velocity after two accelerations, and the heat dissipation effect of the cylinder head is also enhanced.
The workflow of this embodiment is as follows: referring to fig. 7-8, cooling air (thin solid line with arrow in the figure) enters the ventilation channel 2 from the air inlet 21, is divided into two by the guide plate, turns at the joint of the air inlet section 23 and the air outlet section 24, smoothly transits from the air inlet section 23 to the air outlet section 24 due to the joint of the air inlet section 23 and the air outlet section 24 and the arc-shaped side wall of the guide plate, finally flows out from the air outlet 22, and after the cooling air is accelerated by the two accelerating sections, the flow speed of the cooling air is improved, and the heat dissipation effect is better.
While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (9)
1. The utility model provides a motorcycle engine cylinder end, includes the body, has seted up air flue, gas vent and spark plug mounting hole on the body, and gas vent and spark plug mounting hole set up respectively in the different sides of body, are equipped with the spark plug on the spark plug mounting hole, its characterized in that, the air intake and the spark plug of air flue set up in the same side of body, and the air outlet and the gas vent setting of air flue are in the same side of body.
2. A motorcycle engine cylinder head as claimed in claim 1, wherein said air passage is provided in an upper portion of the combustion chamber, and a wall thickness between the air passage and the combustion chamber is uniform.
3. A motorcycle engine cylinder head as claimed in claim 2, wherein the inner wall of the air passage above the combustion chamber is spherical, the inner wall of the upper part of the combustion chamber is also spherical, and the spherical inner wall of the air passage is concentric with the spherical inner wall of the combustion chamber.
4. A motorcycle engine cylinder head as claimed in claim 3, wherein the air passage is provided with a first accelerating section whose cross-sectional area is gradually reduced along the flow direction of the cooling air so that the cooling air is accelerated in the first accelerating section.
5. The engine cylinder head of claim 4, wherein the first accelerating section is provided at a spherical inner wall of the air duct, and the other side inner wall opposite to the spherical inner wall is substantially linear, so that the cross section of the spherical inner wall of the air duct is smaller than the air inlet, thereby forming the first accelerating section to accelerate the cooling air in the first accelerating section.
6. The engine cylinder head of claim 1, wherein the air duct is divided into an air inlet section and an air outlet section, and the inner wall of the joint of the air inlet section and the air outlet section is arc-shaped.
7. The engine cylinder head of claim 6, wherein the air inlet section is provided with a guide block near the air outlet section, so that the air channel of the air inlet section is divided into two parts, and the surface of the guide block is arc-shaped.
8. A motorcycle engine cylinder head as claimed in claim 6, wherein the cross section of the middle part of the air outlet section is smaller than the cross section of both ends, so that the cooling air is accelerated in the middle part of the air outlet section.
9. A motorcycle engine cylinder head as claimed in claim 1, wherein said air outlet extends longitudinally of the body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320161091.1U CN219388025U (en) | 2023-02-08 | 2023-02-08 | Motorcycle engine cylinder head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320161091.1U CN219388025U (en) | 2023-02-08 | 2023-02-08 | Motorcycle engine cylinder head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219388025U true CN219388025U (en) | 2023-07-21 |
Family
ID=87189418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320161091.1U Active CN219388025U (en) | 2023-02-08 | 2023-02-08 | Motorcycle engine cylinder head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219388025U (en) |
-
2023
- 2023-02-08 CN CN202320161091.1U patent/CN219388025U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203009061U (en) | An engine cooling system | |
| CN109990309B (en) | Composite cooling structure of combustion chamber wall surface and turboshaft engine backflow combustion chamber | |
| CN102828781B (en) | Fuel gas turbine cooling blade | |
| US9441578B2 (en) | Gas distribution manifold and corresponding gas intake module | |
| WO2021217792A1 (en) | Combustion assembly structure of turbojet engine | |
| KR20110065397A (en) | Oil cooler | |
| CN110822475B (en) | On-duty flame stabilizer using air cooling structure to match ignition position and design method | |
| CN219388025U (en) | Motorcycle engine cylinder head | |
| CN111075589A (en) | Forced air cooling diesel engine body | |
| CN2867257Y (en) | Airflow speed increasing radiator | |
| KR101769747B1 (en) | Vehicle engine cooling system | |
| CN216111067U (en) | Air inlet pipe of engine | |
| CN214007377U (en) | Flow guiding device for inner cavity of intake manifold | |
| JP3982650B2 (en) | Multi-tube EGR gas cooling system | |
| JP2013174128A (en) | Intercooler | |
| CN113685294A (en) | Air intake system and car | |
| CN101936236A (en) | Engine cylinder head with spark plug cooling channel | |
| CN200968605Y (en) | Direct current combusting device with adjustable center wind | |
| CN212727870U (en) | Electric box heat radiation structure of heat pump water chilling unit | |
| KR101172065B1 (en) | Intercooler | |
| JP2011169214A (en) | Intake device of internal combustion engine | |
| CN114087027B (en) | Gas turbine stationary blade with honeycomb duct | |
| CN211314394U (en) | Diesel engine cylinder cover | |
| CN109944674A (en) | A kind of air-cooled component of universal vertical axis engine | |
| CN117552883B (en) | Engine cylinder cover and engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |