CN213331302U - Optimized cylinder head of motorcycle with double overhead camshafts - Google Patents
Optimized cylinder head of motorcycle with double overhead camshafts Download PDFInfo
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- CN213331302U CN213331302U CN202021905380.0U CN202021905380U CN213331302U CN 213331302 U CN213331302 U CN 213331302U CN 202021905380 U CN202021905380 U CN 202021905380U CN 213331302 U CN213331302 U CN 213331302U
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Abstract
The utility model discloses a two overhead camshaft motorcycle cylinder heads of optimizing. The cylinder head body is provided with a lower end face, an upper end face, an air inlet channel, an exhaust channel, two air inlet valve seats and two exhaust valve seats, wherein the two air inlet valve seats and the two exhaust valve seats are arranged in the cylinder head body; two groups of valve guide pipe holes and valve sleeve holes are arranged above the air inlet channel, one end of each valve guide pipe hole is communicated with the air inlet channel, and the other end of each valve guide pipe hole is communicated with each valve sleeve hole; the arrangement of the valve guide pipe hole and the valve sleeve hole above the exhaust channel is symmetrical to that of the air inlet channel; the upper end surface is provided with a cavity with an opening at the upper part, and a heat insulation cavity is arranged between the air inlet channel and the cavity and between the air outlet channel and the cavity; the heat insulation cavity is communicated with each valve sleeve hole.
Description
Technical Field
The utility model relates to a cylinder head field of engine especially relates to a two overhead camshaft motorcycle cylinder heads of optimizing.
Background
At present, the existing engine cylinder head mainly adopts a single top cam structure, a valve is driven by a rocker arm, and a camshaft and a rocker arm shaft are often arranged on the same support frame. Thus, the installation of the rocker arms is saved, but the arrangement of the plurality of rocker arms is not beneficial to reducing the noise of the engine and improving the riding comfort. To solve this problem, many manufacturers have designed a dual overhead camshaft structure in which the camshaft is mounted on the cylinder head by bearings provided at both ends of the camshaft, and the timing gear is disposed in the sprocket cavity and between the two bearings. Although this solves the above problems, the cylinder head of this structure tends to be bulky, the overall weight of the cylinder head increases, and the cooling requirements for the cylinder head are also higher. Therefore, there is a need for a dual overhead camshaft motorcycle cylinder head that optimizes weight and cooling efficiency to address the above problems.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model provides a two overhead camshaft motorcycle cylinder heads of optimization has thermal-insulated cavity in valve piston department cylinder body, has not only reduced the whole weight of cylinder head, can also still insulate against heat simultaneously.
The utility model provides an optimized cylinder head of a double overhead camshaft motorcycle, which comprises a cylinder head body;
the cylinder head body is provided with a lower end face, an upper end face, an air inlet channel, an exhaust channel, two air inlet valve seats and two exhaust valve seats, the two air inlet valve seats and the two exhaust valve seats are arranged in the cylinder head body, the air inlet channel is communicated with the two air inlet valve seats, the exhaust channel is communicated with the two exhaust valve seats, and a combustion chamber defined by the two air inlet valve seats and the two exhaust valve seats is communicated with the lower end face; two groups of valve guide pipe holes and valve sleeve holes are arranged above the air inlet channel, one end of each valve guide pipe hole is communicated with the air inlet channel, and the other end of each valve guide pipe hole is communicated with each valve sleeve hole; the arrangement of the valve guide pipe hole and the valve sleeve hole above the exhaust channel is symmetrical to that of the air inlet channel;
the upper end face is provided with a cavity with an opening at the upper part, and a heat insulation cavity is arranged between the air inlet channel and the cavity and between the air outlet channel and the cavity; the heat insulation cavity is communicated with each valve sleeve hole, the cross section of the heat insulation cavity is in a herringbone shape, and the top of the herringbone heat insulation cavity is provided with an oil hole communicated with the cavity.
Through setting up thermal-insulated cavity, formed air isolation between the combustion chamber of the upper portion of cylinder head and lower part for the heat of combustion chamber is difficult for rising to cylinder head top, thereby influences the work of spare part wherein. Meanwhile, the whole weight of the cylinder head is reduced due to the arrangement of the heat insulation cavity. The lubricating oil in the cavity can conveniently flow into the heat-insulation cavity lubricating valve pipe assembly due to the arrangement of the oil hole.
Preferably, a cooling water channel is further arranged in the cylinder head body, the section of the cooling water channel is annular, and the cooling water channel surrounds and surrounds the two intake valve seats and the two exhaust valve seats; a plurality of water inlets of the cooling water channel are arranged on the lower end face of the cylinder head body, the water inlets are arranged in a surrounding mode on the lower end face, and each water inlet is long-strip-shaped.
Set up to the cross-section through setting up the cooling water course into the annular, and encircle the cooling water course and surround around inlet chamber and exhaust chamber, after the cooling water got into the cooling water course, the cooling water was around entering in annular cooling water course and is flowed, has increased the volume of water course, has increaseed the area of contact of cooling water with the wall of inlet and exhaust chamber, has improved the dwell time of cooling water in the cooling water course to improve the cooling effect, makeed the cooling also more abundant. In addition, a plurality of water inlets are formed in the lower end face of the cylinder head body and are arranged in a surrounding mode on the lower end face, cooling water can be uniformly injected into a cooling water channel, and the problem of uneven cooling caused by local water injection is solved.
Preferably, a first supporting seat and a second supporting seat which are connected with the cylinder head body into a whole are arranged in the cavity of the cylinder head body, and the first supporting seat and the second supporting seat are arranged in parallel; two sets of camshaft mounting holes which are parallel and symmetrical are arranged on the first supporting seat and the second supporting seat.
The first supporting seat and the second supporting seat which are connected with the cylinder head body into a whole are arranged, and the camshaft mounting hole is formed in the first supporting seat and the second supporting seat, so that the processing is easier, the rocker arm is eliminated, the structure of the cylinder head is simplified, the noise of the engine is reduced, and the engine can be applied to a street car.
Preferably, a through spark plug hole is further arranged on the cylinder head body, the spark plug hole is located in the central position surrounded by the two intake valve seats and the two exhaust valve seats, and a spark plug return hole communicated with the outside is arranged at the bottom of the spark plug hole.
Through the bottom at spark plug hole set up with external communicating spark plug hole that returns, the downthehole ponding of spark plug can flow through this spark plug hole that returns, can prevent that the rainwater from depositing in spark plug hole 6 to avoided arousing electric leakage phenomenon.
Preferably, a drainage channel is arranged on the side surface of the cylinder head body, one end of the drainage channel is communicated with the outside, and the other end of the drainage channel is communicated with the cooling water channel.
The cooling water is discharged out of the cylinder head by arranging the water discharge channel.
Preferably, the top parts of two sides of the air inlet channel and the exhaust channel of the cylinder head body are provided with heat dissipation strips.
Through set up the heat dissipation strip at inlet channel and exhaust passage both sides top, in the driving, the heat of heat dissipation strip is taken away to the air that flows to play and carry out the purpose of supplementary cooling to inlet and outlet gas department.
The beneficial effects of the utility model are embodied in:
1. through setting up thermal-insulated cavity, formed air isolation between the combustion chamber of the upper portion of cylinder head and lower part for the heat of combustion chamber is difficult for rising to cylinder head top, thereby influences the work of spare part wherein. Meanwhile, the whole weight of the cylinder head is reduced due to the arrangement of the heat insulation cavity. The lubricating oil in the cavity can conveniently flow into the heat-insulation cavity lubricating valve pipe assembly due to the arrangement of the oil hole.
2. Set up to the cross-section through setting up the cooling water course into the annular, and encircle the cooling water course and surround around inlet chamber and exhaust chamber, after the cooling water got into the cooling water course, the cooling water was around entering in annular cooling water course and is flowed, has increased the volume of water course, has increaseed the area of contact of cooling water with the wall of inlet and exhaust chamber, has improved the dwell time of cooling water in the cooling water course to improve the cooling effect, makeed the cooling also more abundant. In addition, a plurality of water inlets are formed in the lower end face of the cylinder head body and are arranged in a surrounding mode on the lower end face, cooling water can be uniformly injected into a cooling water channel, and the problem of uneven cooling caused by local water injection is solved.
3. Through set up the heat dissipation strip at inlet channel and exhaust passage both sides top, in the driving, the heat of heat dissipation strip is taken away to the air that flows to play and carry out the purpose of supplementary cooling to inlet and outlet gas department.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic front view of the present invention;
FIG. 3 is a schematic sectional view of the direction A of the present invention;
fig. 4 is a schematic bottom view of the present invention;
fig. 5 is a schematic sectional view of the direction B of the present invention;
fig. 6 is a schematic top view of the present invention;
fig. 7 is a schematic cross-sectional view of the present invention in the direction C;
fig. 8 is a schematic cross-sectional view of the present invention from direction D;
reference numerals: 1-cylinder head body, 11-lower end face, 111-water inlet, 112-radiating strip, 12-upper end face, 121-cavity, 1211-first supporting seat, 1212-second supporting seat, 1213-camshaft mounting hole, 122-heat insulation cavity, 1221-oil hole, 13-air inlet channel, 14-exhaust channel, 15-air inlet valve seat, 151-valve guide pipe hole, 152-valve sleeve hole, 16-exhaust valve seat, 17-cooling water channel, 18-spark plug hole, 181-spark plug water return hole and 19-drainage channel.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
As shown in fig. 1 to 8, the utility model provides an optimized cylinder head of a double overhead camshaft motorcycle, which comprises a cylinder head body 1; the cylinder head body 1 is provided with a lower end surface 11, an upper end surface 12, an air inlet channel 13, an exhaust channel 14, two air inlet valve seats 15 and two exhaust valve seats 16, the two air inlet valve seats 15 and the two exhaust valve seats 16 are arranged in the cylinder head body 1, the air inlet channel 13 is communicated with the two air inlet valve seats 15, the exhaust channel 14 is communicated with the two exhaust valve seats 16, and a combustion chamber enclosed by the two air inlet valve seats 15 and the two exhaust valve seats 16 is communicated with the lower end surface 11; two sets of valve guide pipe holes 151 and valve sleeve holes 152 are arranged above the air inlet channel 13, one end of each valve guide pipe hole 151 is communicated with the air inlet channel 13, and the other end of each valve guide pipe hole 151 is communicated with each valve sleeve hole 152; the arrangement of the valve guide hole 151 and the valve sleeve hole 152 above the exhaust passage 14 is symmetrical to that of the intake passage 13; the upper end surface 12 is provided with a cavity 121 with an opening at the upper part, and a heat insulation cavity 122 is arranged between the cavity 121 and the air inlet channel 13 and the air outlet channel 14; the heat insulation cavity 122 is communicated with each valve sleeve hole 152, the cross section of the heat insulation cavity 122 is in a herringbone shape, and the top of the herringbone heat insulation cavity 122 is provided with an oil hole 1221 communicated with the cavity 121.
In the embodiment, by providing the heat insulation cavity 122, air insulation is formed between the combustion chambers at the upper part and the lower part of the cylinder head, so that the heat of the combustion chambers is not easy to rise to the top of the cylinder head, thereby influencing the work of the parts therein. At the same time, the provision of the insulating cavity 122 also reduces the overall weight of the cylinder head. The oil hole 1221 is arranged to facilitate the lubricating oil in the cavity 121 to flow into the heat insulation cavity 122 to lubricate the valve tube assembly.
A cooling water channel 17 is further arranged in the cylinder head body 1, the section of the cooling water channel 17 is annular, and the cooling water channel 17 surrounds and surrounds the two intake valve seats 15 and the two exhaust valve seats 16; a plurality of water inlets 111 of the cooling water passage 17 are provided on the lower end surface 11 of the cylinder head body 1, the plurality of water inlets 111 are arranged in a surrounding manner on the lower end surface 11, and each water inlet 111 is in a long strip shape.
In this embodiment, the cooling water channel 17 is set to be annular in cross section, and the cooling water channel 17 surrounds around the air inlet chamber and the air outlet chamber, after the cooling water enters the cooling water channel 17, the cooling water flows in the annular cooling water channel 17 in a surrounding manner, the volume of the water channel is increased, the contact area between the cooling water and the wall of the air inlet and outlet chamber is increased, the residence time of the cooling water in the cooling water channel 17 is prolonged, the cooling effect is improved, and cooling is more sufficient. In addition, the plurality of water inlets 111 are arranged on the lower end face 11 of the cylinder head body 1, the plurality of water inlets 111 are arranged in a surrounding mode on the lower end face 11, cooling water can be uniformly injected into the cooling water channel 17, and the problem of uneven cooling caused by local water injection is avoided.
A first supporting seat 1211 and a second supporting seat 1212 which are connected with the cylinder head body 1 into a whole are arranged in the cavity 121 of the cylinder head body 1, and the first supporting seat 1211 and the second supporting seat 1212 are arranged in parallel; the first and second bearings 1211 and 1212 are formed with two sets of camshaft mounting holes 1213 that are parallel and symmetrical to each other.
In this embodiment, the first and second support seats 1211 and 1212 integrally coupled to the head body 1 are provided, and the camshaft mounting hole 1213 is formed in the first and second support seats 1211 and 1212, so that the processing is easier, the rocker arm is eliminated, the structure of the head is simplified, the noise of the engine is reduced, and the engine can be applied to a street car.
The cylinder head body 1 is also provided with a through spark plug hole 18, the spark plug hole 18 is positioned in the central position enclosed by the two intake valve seats 15 and the two exhaust valve seats 16, and the bottom of the spark plug hole 18 is provided with a spark plug return hole 181 communicated with the outside.
In the present embodiment, by providing the plug return hole 181 communicating with the outside at the bottom of the plug hole 18, the accumulated water in the plug hole 18 can flow out through the plug return hole 181, and the accumulation of rainwater in the plug hole 18 can be prevented, thereby avoiding the occurrence of an electric leakage phenomenon.
The side of the cylinder head body 1 is provided with a drainage channel 19, one end of the drainage channel 19 is communicated with the outside, and the other end of the drainage channel 19 is communicated with the cooling water channel 17.
In the present embodiment, the cooling water is discharged out of the cylinder head by providing the drain passage 19.
The top of the two sides of the air inlet channel 13 and the exhaust channel 14 of the cylinder head body 1 is provided with a heat radiating strip 112.
In this embodiment, the heat dissipation strips 112 are disposed on the top of the two sides of the air intake channel 13 and the air exhaust channel 14, so that the heat of the heat dissipation strips 112 is taken away by the flowing air during driving, thereby achieving the purpose of auxiliary cooling of the air intake and exhaust parts.
It should be noted that the above preferred embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (6)
1. The utility model provides an optimized double overhead camshaft motorcycle cylinder head which characterized in that: comprises a cylinder head body;
the cylinder head body is provided with a lower end face, an upper end face, an air inlet channel, an exhaust channel, two air inlet valve seats and two exhaust valve seats, the two air inlet valve seats and the two exhaust valve seats are arranged in the cylinder head body, the air inlet channel is communicated with the two air inlet valve seats, the exhaust channel is communicated with the two exhaust valve seats, and a combustion chamber defined by the two air inlet valve seats and the two exhaust valve seats is communicated with the lower end face; two groups of valve guide pipe holes and valve sleeve holes are arranged above the air inlet channel, one end of each valve guide pipe hole is communicated with the air inlet channel, and the other end of each valve guide pipe hole is communicated with each valve sleeve hole; the arrangement of the valve guide pipe hole and the valve sleeve hole above the exhaust channel is symmetrical to that of the air inlet channel;
the upper end face is provided with a cavity with an opening at the upper part, and a heat insulation cavity is arranged between the air inlet channel and the cavity and between the air outlet channel and the cavity; the heat insulation cavity is communicated with each valve sleeve hole, the cross section of the heat insulation cavity is in a herringbone shape, and the top of the herringbone heat insulation cavity is provided with an oil hole communicated with the cavity.
2. An optimized dual overhead camshaft motorcycle cylinder head as claimed in claim 1 wherein:
the cylinder head body is internally provided with a cooling water channel, the section of the cooling water channel is annular, and the cooling water channel surrounds and surrounds the two intake valve seats and the two exhaust valve seats; a plurality of water inlets of the cooling water channel are arranged on the lower end face of the cylinder head body, the water inlets are arranged in a surrounding mode on the lower end face, and each water inlet is long-strip-shaped.
3. An optimized dual overhead camshaft motorcycle cylinder head as claimed in claim 1 wherein:
a first supporting seat and a second supporting seat which are connected with the cylinder head body into a whole are arranged in a cavity of the cylinder head body, and the first supporting seat and the second supporting seat are arranged in parallel; two sets of camshaft mounting holes which are parallel and symmetrical are arranged on the first supporting seat and the second supporting seat.
4. An optimized dual overhead camshaft motorcycle cylinder head as claimed in claim 1 wherein:
the cylinder head body is also provided with a through spark plug hole, the spark plug hole is positioned in the central position enclosed by the two intake valve seats and the two exhaust valve seats, and the bottom of the spark plug hole is provided with a spark plug water return hole communicated with the outside.
5. An optimized dual overhead camshaft motorcycle cylinder head as claimed in claim 1 wherein:
and a drainage channel is arranged on the side surface of the cylinder head body, one end of the drainage channel is communicated with the outside, and the other end of the drainage channel is communicated with the cooling water channel.
6. An optimized dual overhead camshaft motorcycle cylinder head as claimed in claim 1 wherein:
and heat dissipation strips are arranged at the tops of two sides of the air inlet channel and the exhaust channel of the cylinder head body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021905380.0U CN213331302U (en) | 2020-09-03 | 2020-09-03 | Optimized cylinder head of motorcycle with double overhead camshafts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021905380.0U CN213331302U (en) | 2020-09-03 | 2020-09-03 | Optimized cylinder head of motorcycle with double overhead camshafts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213331302U true CN213331302U (en) | 2021-06-01 |
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ID=76102345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021905380.0U Active CN213331302U (en) | 2020-09-03 | 2020-09-03 | Optimized cylinder head of motorcycle with double overhead camshafts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213331302U (en) |
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2020
- 2020-09-03 CN CN202021905380.0U patent/CN213331302U/en active Active
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