CN214170681U - Air inlet structure of engine cylinder head - Google Patents
Air inlet structure of engine cylinder head Download PDFInfo
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- CN214170681U CN214170681U CN202023005113.0U CN202023005113U CN214170681U CN 214170681 U CN214170681 U CN 214170681U CN 202023005113 U CN202023005113 U CN 202023005113U CN 214170681 U CN214170681 U CN 214170681U
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- air inlet
- air
- tumble
- channel
- throat
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- 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
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Abstract
The utility model discloses an air inlet structure of an engine cylinder head, which comprises an air inlet, an air inlet channel, an air passage throat, an air inlet valve guide pipe and an air inlet valve seat ring which are arranged on the cylinder head; the air inlet end and the air outlet end of the air inlet channel are respectively connected with the air inlet and the side surface of the throat of the air channel, and the air inlet guide pipe and the air inlet seat ring are respectively connected with the upper end and the lower end of the throat of the air channel; and a tumble flange is formed on the lower side of the inner wall of the air inlet channel and close to the throat of the air channel, a concave tumble curved surface is formed on the upper end surface of the tumble flange, and the height of the tumble curved surface is gradually increased along the direction from the air inlet end of the air inlet channel to the air outlet end of the air inlet channel. The utility model discloses can effectively improve the combustion efficiency of engine.
Description
Technical Field
The utility model relates to an engine field especially indicates an engine cylinder head inlet structure.
Background
The engine is the heart of the motor vehicle and provides power for the motor vehicle to walk; the structural design of the air inlet channel of the cylinder head of the engine is very important, and the structure of the air inlet channel can obviously influence the air inlet flow, the flow speed and the tumble strength, so that the combustion efficiency and the power performance of the engine are influenced.
As shown in fig. 1, an intake passage 12 ' of the existing engine cylinder head has a large volume and a large cross section, a section from the intake passage 12 ' to a front section of an intake valve seat ring 15 ' is transited by a large chamfer 121 ', and a section from an intake port of the intake passage 12 ' to the chamfer 121 ' is downward rushed towards the intake valve seat ring 15 '; the air inlet 12' has a larger cross section, is smooth as a whole, and has a smaller air inlet resistance, so that the air inlet flow can be increased and the smoothness of the air flow can be ensured. However, the air flow velocity and the tumble strength of the air inlet 12' are low, the mixing effect of oil and gas is poor, the combustion efficiency of the engine is low, and the performance of the engine is greatly influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an engine cylinder head inlet structure, its combustion efficiency that can effectively improve the engine.
In order to achieve the above purpose, the solution of the present invention is:
an air inlet structure of an engine cylinder head comprises an air inlet, an air inlet channel, an air channel throat, an air inlet valve guide pipe and an air inlet valve seat ring, wherein the air inlet channel, the air channel throat, the air inlet valve guide pipe and the air inlet valve seat ring are arranged on the cylinder head; the air inlet end and the air outlet end of the air inlet channel are respectively connected with the air inlet and the side surface of the throat of the air channel, and the air inlet guide pipe and the air inlet seat ring are respectively connected with the upper end and the lower end of the throat of the air channel; and a tumble flange is formed on the lower side of the inner wall of the air inlet channel and close to the throat of the air channel, a concave tumble curved surface is formed on the upper end surface of the tumble flange, and the height of the tumble curved surface is gradually increased along the direction from the air inlet end of the air inlet channel to the air outlet end of the air inlet channel.
The air passage throat forms a connecting arc surface for connecting the tumble flange and the intake valve seat ring, the upper end and the lower end of the connecting arc surface are respectively connected with the tumble flange and the intake valve seat ring, and the connecting arc surface is arranged in a concave mode towards the outer side of the air passage throat.
And the upper end of the connecting cambered surface and the edge of the tumble curved surface of the tumble flange, which is close to the throat opening of the air passage, are in transition through a chamfer.
The maximum height of the tumble curved surface of the tumble flange is greater than 0mm and less than or equal to 5 mm.
The inner contour cross-sectional area of the air inlet channel is gradually reduced along the direction from the air inlet end of the air inlet channel to the air outlet end of the air inlet channel.
The air passage throat opening, the inlet valve guide pipe and the inlet valve seat ring are arranged in the air inlet channel in an inclined mode towards the same side.
After the scheme is adopted, the utility model has the characteristics of it is following:
1. the lower side of the inner wall of the air inlet channel of the utility model is provided with a tumble flange near the throat of the air channel, the upper end surface of the tumble flange is provided with a concave tumble curved surface, and the height of the tumble curved surface is gradually increased along the direction from the air inlet end of the air inlet channel to the air outlet end of the air inlet channel; the tumble curved surface is used for guiding the oil-gas mixture gas passing through the air inlet channel, so that the oil-gas mixture gas introduced from the air inlet channel can generate tumble in advance by virtue of the tumble flange, and the oil-gas mixture gas is mixed more uniformly, thereby improving the combustion efficiency of the engine;
2. the cross section area of the inner contour of the air inlet channel of the utility model is gradually reduced along the direction from the air inlet end of the air inlet channel to the air outlet end of the air inlet channel, so that the air inlet channel can accelerate the oil-gas mixture introduced from the air inlet, and the flow rate of the oil-gas mixture entering the throat opening of the air channel is improved, so that the oil-gas mixture is more uniformly mixed, and the combustion efficiency of an engine is improved;
3. the throat of the air passage of the utility model forms a connecting cambered surface connecting the tumble flange and the inlet valve seat ring, and the connecting cambered surface is arranged towards the outside direction of the throat of the air passage in a concave way; this link up the cambered surface can lead to the oil gas mixture who gets into the air flue throat and help improving oil gas mixture's tumble strength, and then improve the combustion efficiency of engine.
Drawings
FIG. 1 is a schematic diagram of a conventional cylinder head of an engine;
fig. 2 is a cross-sectional view of the present invention;
FIG. 3 is a schematic view of the present invention;
description of the reference figures of the background art:
inlet channel 12 ', chamfer 121 ', inlet valve seat insert 15 ',
the utility model discloses a reference numeral explains:
the cylinder head (1) is provided with a cylinder head,
the air inlet (11) is provided with an air inlet,
the intake port 12, the tumble flange 121, the tumble curved surface 1211, the chamfer 1212,
the throat 13 of the air passage is connected with the cambered surface 131,
the inlet valve guide 14 is provided with,
an intake valve seat ring 15 is provided,
the duct channel (16) is provided with,
the combustion chamber (17) is provided with a combustion chamber,
an inlet valve 2, a stem 21, a head 22.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.
As shown in fig. 2 and fig. 3, the present invention discloses an air intake structure of an engine cylinder head, which comprises an air inlet 11, an air inlet channel 12, an air passage throat 13, an air intake valve conduit 14 and an air intake valve seat ring 15 arranged on the cylinder head 1; the air inlet end and the air outlet end of the air inlet channel 12 are respectively connected with the side surfaces of an air inlet 11 and an air channel throat 13, the air inlet 11 is used for introducing oil-gas mixed gas, an air inlet valve guide pipe 14 and an air inlet seat ring 15 are respectively connected with the upper end and the lower end of the air channel throat 13, the air inlet valve guide pipe 14 is used for allowing a rod part 21 of an air inlet valve 2 to penetrate, and a head part 22 of the air inlet valve 2 can open and close the air inlet seat ring 15 to control whether the oil-gas mixed gas is introduced into a combustion chamber 17 of the cylinder head 1; as shown in fig. 2, the intake port 11, the intake passage 12, and the throat 13 may be integrally formed on the cylinder head 1, the intake valve guide 14 may be fitted in a guide passage 16 of the cylinder head 1, and the intake valve seat 15 is disposed at a joint of the throat 13 and the combustion chamber 17.
As shown in fig. 2, the inner contour cross-sectional area of the inlet duct 12 is gradually reduced along the direction from the inlet end of the inlet duct 12 to the outlet end of the inlet duct 12, so that the inlet duct 12 can accelerate the oil-gas mixture introduced from the inlet port 11, and the flow rate of the oil-gas mixture entering the throat 13 of the air duct is increased, so that the oil-gas mixture is more uniformly mixed, thereby facilitating the oil-gas mixture to be more fully combusted in the combustion chamber 17, and further improving the combustion efficiency of the engine; the air passage throat 13, the intake valve guide pipe 14 and the intake valve seat ring 15 can be arranged in the air inlet channel 12 in an inclined mode towards the same side, so that the oil-gas mixture is favorable for generating tumble flow in the intake valve seat ring 15 and the combustion chamber 17, and the oil-gas mixture is mixed more uniformly.
As shown in fig. 2, a tumble flange 121 is formed on the lower side of the inner wall of the intake duct 12 near the throat 13 of the air passage, a concave tumble curved surface 1211 is formed on the upper end surface of the tumble flange 121, the tumble curved surface 1211 is used for guiding the oil-gas mixture passing through the intake duct 12, and the height of the tumble curved surface 1211 gradually increases along the direction from the air inlet end of the intake duct 12 to the air outlet end of the intake duct 12; the tumble curved surface 1211 of the tumble flange 121 is a curved surface structure, so that the oil-gas mixture can smoothly pass through the tumble flange 121, and the height of the tumble curved surface 1211 of the tumble flange 121 is gradually increased along the direction from the air inlet end of the air inlet duct 12 to the air outlet end of the air inlet duct 12, so that the oil-gas mixture introduced from the air inlet 11 can generate tumble flow in advance by means of the tumble flange 121, and the oil-gas mixture is mixed more uniformly, thereby improving the combustion efficiency of the engine. Since the height of the tumble curved surface 1211 of the tumble flange 121 affects the flow rate of the air-fuel mixture into the air passage throat 13 to affect the power performance of the engine, the maximum height Hmax of the tumble curved surface 1211 of the tumble flange 121 may be set to be greater than 0mm and equal to or less than 5mm in order to balance the power performance and the combustion efficiency of the engine, which enables the power performance and the combustion efficiency of the engine to be optimized.
The cooperation figure 2 shows, the air flue throat 13 can form the linking cambered surface 131 that links up tumble flange 121 and intake valve seat insert 15, and both ends link up tumble flange 121 and intake valve seat insert 15 respectively about this linking cambered surface 131, links up cambered surface 131 towards the sunken setting of the outside direction of air flue throat 13, should link up cambered surface 131 and can lead to the oil gas mixture who gets into air flue throat 13 and help improving oil gas mixture's tumble strength, and then improve the combustion efficiency of engine. The upper end of the connecting arc surface 131 and the edge of the tumble curved surface 1211 of the tumble flange 121 close to the throat of the air passage can be transited through a chamfer 1212, so that the smoothness of the flow of the oil-gas mixed gas is ensured.
The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should not be construed as departing from the scope of the present invention.
Claims (6)
1. An engine cylinder head air intake structure characterized by: the device comprises an air inlet, an air inlet channel, an air channel throat, an air inlet valve guide pipe and an air inlet valve seat ring which are arranged on an air cylinder head;
the air inlet end and the air outlet end of the air inlet channel are respectively connected with the air inlet and the side surface of the throat of the air channel, and the air inlet guide pipe and the air inlet seat ring are respectively connected with the upper end and the lower end of the throat of the air channel;
and a tumble flange is formed on the lower side of the inner wall of the air inlet channel and close to the throat of the air channel, a concave tumble curved surface is formed on the upper end surface of the tumble flange, and the height of the tumble curved surface is gradually increased along the direction from the air inlet end of the air inlet channel to the air outlet end of the air inlet channel.
2. An engine cylinder head intake structure according to claim 1, wherein: the air passage throat forms a connecting arc surface for connecting the tumble flange and the intake valve seat ring, the upper end and the lower end of the connecting arc surface are respectively connected with the tumble flange and the intake valve seat ring, and the connecting arc surface is arranged in a concave mode towards the outer side of the air passage throat.
3. An engine cylinder head intake structure according to claim 2, wherein: and the upper end of the connecting cambered surface and the edge of the tumble curved surface of the tumble flange, which is close to the throat opening of the air passage, are in transition through a chamfer.
4. An engine cylinder head intake structure according to claim 1, wherein: the maximum height of the tumble curved surface of the tumble flange is greater than 0mm and less than or equal to 5 mm.
5. An engine cylinder head intake structure according to claim 1, wherein: the inner contour cross-sectional area of the air inlet channel is gradually reduced along the direction from the air inlet end of the air inlet channel to the air outlet end of the air inlet channel.
6. An engine cylinder head intake structure according to claim 1, wherein: the air passage throat opening, the inlet valve guide pipe and the inlet valve seat ring are arranged in the air inlet channel in an inclined mode towards the same side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023005113.0U CN214170681U (en) | 2020-12-14 | 2020-12-14 | Air inlet structure of engine cylinder head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023005113.0U CN214170681U (en) | 2020-12-14 | 2020-12-14 | Air inlet structure of engine cylinder head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214170681U true CN214170681U (en) | 2021-09-10 |
Family
ID=77605814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023005113.0U Active CN214170681U (en) | 2020-12-14 | 2020-12-14 | Air inlet structure of engine cylinder head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214170681U (en) |
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2020
- 2020-12-14 CN CN202023005113.0U patent/CN214170681U/en active Active
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