CN203962237U - Engine inlets, cylinder head and motor - Google Patents
Engine inlets, cylinder head and motor Download PDFInfo
- Publication number
- CN203962237U CN203962237U CN201420249996.5U CN201420249996U CN203962237U CN 203962237 U CN203962237 U CN 203962237U CN 201420249996 U CN201420249996 U CN 201420249996U CN 203962237 U CN203962237 U CN 203962237U
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- China
- Prior art keywords
- air intake
- engine inlets
- valve seat
- seat ring
- angle
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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.)
- Withdrawn - After Issue
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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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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model provides a kind of engine inlets, cylinder head and motor, two points of intake ducts that these engine inlets comprise main air intake and form at described main air intake tail end fork, the front end of described main air intake is formed with the inlet mouth that is connected to intake manifold, the tail end of described two points of intake ducts is formed with respectively the air intake port that is connected to two different air valve seat ring holes, the length of described main air intake is the 2/3-5/6 of engine inlets total length, the angle of the center line of described engine inlets and the bottom plane of cylinder head is 30 °-60 °, from the centre section of described point of intake duct, the upper end tangent line at described air intake port place and the angle of air valve seat ring press-assembling surface are 40 °-80 °, the lower end tangent line at described air intake port place and the angle of air valve seat ring press-assembling surface are 25 °-70 °.Engine inlets of the present utility model, obtain high rolling when flowing ratio and have also reached higher flow coefficient, can take into account performance and the emission request of motor.
Description
Technical field
The utility model belongs to technical field of engines, particularly relates to a kind of engine inlets, cylinder head and motor.
Background technique
Naturally aspirated engine wishes to obtain higher flow coefficient, improves charging efficiency, to obtain better power index.And supercharged engine wishes to obtain the higher stream ratio that rolls, improve velocity of propagation of flame, reduce detonation tendency, improve combustion stability.But the lifting of rolling stream ratio can restrict the raising of flow coefficient, therefore how to obtain and highly can obtain again higher flow coefficient when rolling stream ratio, to meet performance and the emission request of motor, this is the problem that the Design of Inlet of supercharged engine will be considered.
Figure 1 shows that existing a kind of intake duct, it is formed in cylinder head, two points of intake duct 2a that comprise main air intake 1a and form at described main air intake 1a tail end fork, the front end of described main air intake 1a is formed with the inlet mouth 11a that is connected to intake manifold, the tail end of described two points of intake duct 2a is formed with respectively the air intake port 21a that is connected to two different air valve seat ring holes, the length of described main air intake 1a is the 1/3-1/2 of engine inlets total length, the angle of the center line of described intake duct and the bottom plane of cylinder head is generally 25 °, and from the centre section of described point of intake duct 2a, the upper end tangent line at described air intake port 21a place and the angle of air valve seat ring press-assembling surface are generally 50 °, the lower end tangent line at described air intake port 21a place and the angle of air valve seat ring press-assembling surface are generally 45 °.Like this, because intake duct enters respectively firing chamber in the 1/3-1/2 of its total length punishment trouble, promoted to a certain extent and rolled stream ratio.In engine air-intake structure, air valve seat ring is formed with valve seat in hole, and air valve seat ring is to be embedded in the annulus on valve seat with larger magnitude of interference, and air valve seat ring press-assembling surface is the annular surface contacting with a side end face of air valve seat ring on valve seat.
But in the intake duct shown in Fig. 1 and Fig. 2, main air intake 1a length is less, the lifting of flow coefficient is limited; And, it does not take into account that angle, the upper end tangent line at air intake port 21a place and the angle of air valve seat ring press-assembling surface of the center line of air flue and the bottom plane of cylinder head and the lower end tangent line at air intake port 21a place and the design of the angle of air valve seat ring press-assembling surface are on flow coefficient and the impact of rolling stream ratio, thereby the flow coefficient of the intake duct obtaining according to this and to roll stream lower, be difficult to take into account performance and the emission request of motor.
Model utility content
Technical problem to be solved in the utility model is for the flow coefficient of existing engine inlets and rolls that stream is lower is difficult to take into account the performance of motor and the defect of emission request, a kind of engine inlets are provided.
It is as follows that the utility model solves the problems of the technologies described above adopted technological scheme:
A kind of engine inlets are provided, two points of intake ducts that comprise main air intake and form at described main air intake tail end fork, the front end of described main air intake is formed with the inlet mouth that is connected to intake manifold, the tail end of described two points of intake ducts is formed with respectively the air intake port that is connected to two different air valve seat ring holes, the length of described main air intake is the 2/3-5/6 of engine inlets total length, the angle of the center line of described engine inlets and the bottom plane of cylinder head is 30 °-60 °, from the centre section of described point of intake duct, the upper end tangent line at described air intake port place and the angle of air valve seat ring press-assembling surface are 40 °-80 °, the lower end tangent line at described air intake port place and the angle of air valve seat ring press-assembling surface are 25 °-70 °.
Further, the length of described main air intake is the 2/3-4/5 of engine inlets total length.
Further, the upper end tangent line at described air intake port place and the angle of air valve seat ring press-assembling surface are 60 °-80 °.
Further, the lower end tangent line at described air intake port place and the angle of air valve seat ring press-assembling surface are 50 °-70 °.
Further, described main air intake and described point of intake duct connecting part are formed with valve guide hole and dodge hole, and tail end and valve guide hole that described valve guide hole is dodged hole join.
Further, the width that described valve guide hole is dodged hole increases gradually along airintake direction.
According to engine inlets of the present utility model, the length of described main air intake is the 2/3-5/6 of engine inlets total length, be that intake duct is being divided into two apart from inlet mouth 2/3-5/6 place, gas enters respectively firing chamber by two points of intake ducts, has increased substantially flow coefficient.In addition, the angle of the center line of described engine inlets and the bottom plane of cylinder head is 30 °-60 °, and from the centre section of described point of intake duct, the upper end tangent line at described air intake port place and the angle of air valve seat ring press-assembling surface are 40 °-80 °, and the lower end tangent line at described air intake port place and the angle of air valve seat ring press-assembling surface are 25 °-70 °.The application's model utility people, through long-term, a large amount of experiment repeatedly and test, finds the intake duct of the combination that comprises above-mentioned parameter, and with respect to the conventional intake duct shown in Fig. 1, flow coefficient can improve 10%-25%, rolls stream than improving 30%-50%.Visible, the engine inlets that the utility model provides obtain high roll stream ratio in, also reached higher flow coefficient, the advantage such as have that combustion efficiency is high, engine performance good and oil consumption is low, can take into account performance and the emission request of motor.
In addition, the utility model also provides a kind of cylinder head, and it comprises above-mentioned engine inlets.
In addition, the utility model also provides a kind of motor, and it comprises above-mentioned engine inlets.
Brief description of the drawings
Fig. 1 is the structural representation of existing a kind of engine inlets;
Fig. 2 is the partial sectional view of the cylinder head that provides of the utility model one embodiment;
Fig. 3 is the structural representation removing in Fig. 2 after intake valve mechanism;
Fig. 4 is the exterior contour figure of the engine inlets that provide of the utility model one embodiment;
Fig. 5 is the plan view of Fig. 4.
Reference character in Figure of description is as follows:
100, engine inlets; 1, main air intake; 2, divide intake duct; 21, air intake port; 22, upper end tangent line; 23, lower end tangent line; 3, air valve seat ring hole; 31, valve seat; 32, air valve seat ring; 4, air valve seat ring press-assembling surface; 5, valve guide hole is dodged hole; 6, valve guide hole; 7, valve guide bushing; 8, valve stem; 10, cylinder head; 101, bottom plane.
Embodiment
Clearer for technical problem, technological scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is described in further detail.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figures 2 to 5, the engine inlets 100 that the utility model one embodiment provides, two points of intake ducts 2 that comprise main air intake 1 and form at described main air intake 1 tail end fork, the front end of described main air intake 1 is formed with the inlet mouth 11 that is connected to intake manifold, the tail end of described two points of intake ducts 2 is formed with respectively the air intake port 21 that is connected to two different air valve seat ring holes 3, the length L 0 of described main air intake 1 is the 2/3-5/6 of engine inlets total length L, the included angle B 1 of the center line Z1 of described engine inlets 100 and the bottom plane 101 of cylinder head 10 is 30 °-60 °, from the centre section (from Fig. 3) of described point of intake duct, the upper end tangent line 22 at described air intake port 21 places is 40 °-80 ° with the included angle B 2 of air valve seat ring press-assembling surface 4, the lower end tangent line 23 at described air intake port 21 places is 25 °-70 ° with the included angle B 3 of air valve seat ring press-assembling surface 4.
As shown in Figure 2, be formed with the valve seat 31 of tubular in air valve seat ring hole 3, on valve seat 31, interference is pressed with air valve seat ring 32, and air valve seat ring press-assembling surface 4 is the annular surface contacting with a side end face of air valve seat ring 32 on valve seat 31.Valve head
In the present embodiment, preferably, as shown in Figure 5, the length L 0 of described main air intake 1 is the 2/3-4/5 of engine inlets 100 total length L.For example, the length L 0 of described main air intake 1 is 2/3 or 4/5 of engine inlets 100 total length L.Certainly, the length L 0 of described main air intake 1 can be also 5/6 of engine inlets 100 total length L.
In the present embodiment, preferably, the upper end tangent line 22 at described air intake port 21 places is 60 °-80 ° with the included angle B 2 of air valve seat ring press-assembling surface 4.For example, the upper end tangent line 22 at described air intake port 21 places is 60 ° or 80 ° with the included angle B 2 of air valve seat ring press-assembling surface 4.Certainly, the upper end tangent line 22 at described air intake port 21 places also can be 40 ° with the included angle B 2 of air valve seat ring press-assembling surface 4.
In the present embodiment, preferably, the lower end tangent line 23 at described air intake port 21 places is 50 °-70 ° with the included angle B 3 of air valve seat ring press-assembling surface 4.For example, the lower end tangent line 23 at described air intake port 21 places is 50 ° or 70 ° with the included angle B 3 of air valve seat ring press-assembling surface 4.Certainly, the lower end tangent line 23 at described air intake port 21 places also can be 25 ° with the included angle B 3 of air valve seat ring press-assembling surface 4.
In the present embodiment, as shown in Figures 2 to 5, described main air intake 1 is formed with valve guide hole with described point of intake duct 2 connecting parts and dodges hole 5, and tail end and valve guide hole 6 that described valve guide hole is dodged hole 5 join.And the width that described valve guide hole is dodged hole 5 increases gradually along airintake direction.Like this, dodge hole 5 and join with valve guide hole 6 due to guide hole, in processing valve guide hole 6, guide hole is dodged hole 5 can retain larger machining allowance for the processing of valve guide hole 6.
As shown in Figure 2, in valve guide hole 6, interference is pressed with valve guide bushing 7, and the bar portion of valve stem 8 is through valve guide bushing 7, and the head of valve stem 8 contacts with air valve seat ring 32.
According to the engine inlets of the utility model above-described embodiment, the length of described main air intake is the 2/3-5/6 of engine inlets total length, be that intake duct is being divided into two apart from inlet mouth 2/3-5/6 place, gas enters respectively firing chamber by two points of intake ducts, has increased substantially flow coefficient.In addition, the angle of the center line of described engine inlets and the bottom plane of cylinder head is 30 °-60 °, and from the centre section of described point of intake duct, the upper end tangent line at described air intake port place and the angle of air valve seat ring press-assembling surface are 40 °-80 °, and the lower end tangent line at described air intake port place and the angle of air valve seat ring press-assembling surface are 25 °-70 °.The application's model utility people, through long-term, a large amount of experiment repeatedly and test, finds the intake duct of the combination that comprises above-mentioned parameter, and with respect to the conventional intake duct shown in Fig. 1, flow coefficient can improve 10%-25%, rolls stream than improving 30%-50%.Visible, the engine inlets that the utility model above-described embodiment provides obtain high roll stream ratio in, also reach higher flow coefficient, had that combustion efficiency is high, engine performance good and the advantage such as oil consumption is low, can take into account performance and the emission request of motor.
In addition, as shown in Figures 2 and 3, the utility model one embodiment also provides a kind of cylinder head 10, and it comprises above-mentioned engine inlets 100.Conventionally engine inlets 100 are integrally formed in cylinder head 10 inside in the time of casting.
In addition, the utility model is one embodiment also provide a kind of motor, and it comprises above-mentioned engine inlets 100.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any amendments of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (8)
1. engine inlets, two points of intake ducts (2) that comprise main air intake (1) and form at described main air intake (1) tail end fork, the front end of described main air intake (1) is formed with the inlet mouth (11) that is connected to intake manifold, the tail end of described two points of intake ducts (2) is formed with respectively the air intake port (21) that is connected to different two air valve seat ring holes (3), it is characterized in that, the length of described main air intake (1) is the 2/3-5/6 of engine inlets total length, the angle of the bottom plane (101) of the center line of described engine inlets and cylinder head (10) is 30 °-60 °, from the centre section of described point of intake duct (2), the upper end tangent line (22) that described air intake port (21) is located is 40 °-80 ° with the angle of air valve seat ring press-assembling surface (4), the lower end tangent line (23) that described air intake port (21) is located is 25 °-70 ° with the angle of air valve seat ring press-assembling surface (4).
2. engine inlets according to claim 1, is characterized in that, the length of described main air intake (1) is the 2/3-4/5 of engine inlets total length.
3. engine inlets according to claim 1, is characterized in that, the upper end tangent line (22) that described air intake port (21) is located is 60 °-80 ° with the angle of air valve seat ring press-assembling surface (4).
4. engine inlets according to claim 1, is characterized in that, the lower end tangent line (23) that described air intake port (21) is located is 50 °-70 ° with the angle of air valve seat ring press-assembling surface (4).
5. engine inlets according to claim 1, it is characterized in that, described main air intake (1) is formed with valve guide hole with described point of intake duct (2) connecting part and dodges hole (5), and tail end and valve guide hole (6) that described valve guide hole is dodged hole (5) join.
6. engine inlets according to claim 5, is characterized in that, the width that described valve guide hole is dodged hole (5) increases gradually along airintake direction.
7. a cylinder head, is characterized in that, comprises the engine inlets described in claim 1 to 6 any one.
8. a motor, is characterized in that, comprises the engine inlets described in claim 1 to 6 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420249996.5U CN203962237U (en) | 2014-05-15 | 2014-05-15 | Engine inlets, cylinder head and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420249996.5U CN203962237U (en) | 2014-05-15 | 2014-05-15 | Engine inlets, cylinder head and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203962237U true CN203962237U (en) | 2014-11-26 |
Family
ID=51922832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420249996.5U Withdrawn - After Issue CN203962237U (en) | 2014-05-15 | 2014-05-15 | Engine inlets, cylinder head and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203962237U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089880A (en) * | 2014-05-15 | 2015-11-25 | 广州汽车集团股份有限公司 | Air inlet duct of engine, cylinder cover and engine |
| CN105927366A (en) * | 2016-06-27 | 2016-09-07 | 力帆实业(集团)股份有限公司 | Air flue combustion chamber of 150 ml displacement street-run motorcycle engine |
-
2014
- 2014-05-15 CN CN201420249996.5U patent/CN203962237U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089880A (en) * | 2014-05-15 | 2015-11-25 | 广州汽车集团股份有限公司 | Air inlet duct of engine, cylinder cover and engine |
| CN105089880B (en) * | 2014-05-15 | 2020-02-07 | 广州汽车集团股份有限公司 | Engine intake duct, cylinder head and engine |
| CN105927366A (en) * | 2016-06-27 | 2016-09-07 | 力帆实业(集团)股份有限公司 | Air flue combustion chamber of 150 ml displacement street-run motorcycle engine |
| CN105927366B (en) * | 2016-06-27 | 2019-05-03 | 力帆实业(集团)股份有限公司 | Run motorcycle engine air flue combustion chamber in 150ml discharge capacity street |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wu Jian Inventor after: Li Dan Inventor after: Liu Zhuo Inventor after: Zhu Hongfei Inventor before: Li Dan Inventor before: Liu Zhuo Inventor before: Zhu Hongfei |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LI DAN LIU ZHUO ZHU HONGFEI TO: WU JIAN LI DAN LIU ZHUO ZHU HONGFEI |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141126 Effective date of abandoning: 20200207 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20141126 Effective date of abandoning: 20200207 |