CN107559085B - A kind of air intake duct for methanol engine - Google Patents
A kind of air intake duct for methanol engine Download PDFInfo
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- CN107559085B CN107559085B CN201710875748.XA CN201710875748A CN107559085B CN 107559085 B CN107559085 B CN 107559085B CN 201710875748 A CN201710875748 A CN 201710875748A CN 107559085 B CN107559085 B CN 107559085B
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- air intake
- channel
- intake duct
- bending channel
- protrusion
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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 present invention provides a kind of air intake ducts for methanol engine, comprising: first passage, one end are connected with the entrance of air intake duct；Second channel, one end are connected with the outlet of air intake duct；Bending channel, both ends are separately connected first passage and second channel；Wherein, bending channel is bent around a center of circle, and bending channel has the nearside close to the center of circle and the distal side far from the center of circle；In nearside, the recess portion towards bending channel internal recess equipped with the nearside wall surface extension along bending channel, recess portion has the first end close to first passage and the second end close to second channel, and the horizontal plane where the minimum point of second end is higher than the horizontal plane where first end；In distal side, the protrusion towards separate bending channel direction protrusion equipped with the distal side wall surface extension along bending channel.The general flow air flue that air-flow of the invention can obtain high-eddy after being passed through air intake duct and high tumble flow combines, tubulence energy is stronger, and the thermal efficiency of burning is higher.
Description
Technical field
The present invention relates to vehicle motor technical fields, more particularly to a kind of air intake duct for methanol engine.
Background technique
The air intake duct of engine mostly uses vortex air intake road at present, gas be mainly formed at after entering vortex air intake road into
The organized air motion rotated during gas around cylinder-bore axis.But in using engine of the methanol as main fuel,
Due to the particularity of methanol fuel, methanol needs to mix well with air in air inlet, therefore existing swirl air passage is unfavorable for
It is burnt using the methanol of ignition way.
Also, the structure of available engine has high-eddy, and the feature that tumble flow is weaker.If by available engine application
In the engine using methanol as main fuel, the characteristics of due to available engine, methanol fuel is be easy to cause to mix with air
It is insufficient, it easily catches fire so as to cause engine, the problem that fuel consumption is high.
Summary of the invention
It is an object of the present invention to provide a kind of air intake duct for methanol engine, air-flow is being passed through the air inlet
High-eddy can be obtained behind road and general flow air flue that high tumble flow combines, so that the tubulence energy of air-flow is stronger, between air-flow
More evenly, the thermal efficiency of burning is higher for mixing.
Particularly, the present invention provides a kind of air intake ducts for methanol engine, comprising:
First passage, one end are connected with the entrance of the air intake duct；
Second channel, one end are connected with the outlet of the air intake duct；
Bending channel, both ends are separately connected the first passage and the second channel；
Wherein, the bending channel is bent around a center of circle, the bending channel have close to the center of circle nearside and
Distal side far from the center of circle；
In the nearside, equipped with the nearside wall surface extension along the bending channel towards the bending channel internal recess
Recess portion, the recess portion has the first end close to the first passage and a second end close to the second channel, described the
Horizontal plane where the minimum point at two ends is higher than the horizontal plane where the first end；
In the distal side, the court equipped with the distal side wall surface extension along the bending channel deviates from the bending channel direction
The protrusion of protrusion.
Further, the protrusion has the first side close to the first passage and second close to the second channel
Side, towards away from the maximum predetermined altitude of bending channel direction protrusion, second side court deviates from the bending for first side
The minimum predetermined altitude of channel direction protrusion, the height of projection of the protrusion is from the maximum predetermined altitude of first side to described the
The minimum predetermined altitude consecutive variations of two sides.
Further, the minimum predetermined altitude is zero.
Further, the lobe length of described first side to described second side is shorter than the first end to the second end
Recess length.
Further, the axis extended line of the first passage has after intersecting with the axis extended line of the second channel
Predetermined angular, the predetermined angular are 90 degree.
Further, the horizontal plane where the minimum point of the second end is lower than the water where the minimum point of described second side
Plane.
Further, the first side of the first end of the recess portion and the protrusion is located at the axis perpendicular to the bending channel
On the same cross section of line interception.
Further, the first end of the recess portion is described towards the bending channel internal recess minimum predetermined depth
Second end is towards the bending channel internal recess maximum predetermined depth, the minimum of the recessed depth of the recess portion from the first end
Predetermined depth to the second end maximum predetermined depth consecutive variations.
Further, the first passage, the bending channel and the second channel are integrally formed.
Further, the air intake duct is mounted in engine cylinder cover, close first side of the bending channel
Position at be equipped with a mounting portion, the mounting portion is used to avoid the cylinder bolt of the cylinder cover.
The present invention for methanol engine air intake duct due to its on bending channel provided with special construction protrusion and
Recess portion, therefore air-flow can produce stronger tumble flow characteristic after through the air intake duct, be more advantageous to fuel economy and mention
It rises.Meanwhile higher tubulence energy characteristic can be also played by the air-flow of air intake duct of the present invention, make to burn more stable.
Further, the present invention for methanol engine air intake duct protrusion height of projection from first side most
Big predetermined altitude to described second side minimum predetermined altitude consecutive variations.The consecutive variations of height of projection can effectively change gas
The flow direction of body is more advantageous to fuel combustion so that air-flow can produce stronger tumble flow characteristic after through the air intake duct
Burn improved efficiency.
Further, the present invention is for the recessed depth of the recess portion of the air intake duct of methanol engine also from the first end
Minimum predetermined depth to the second end maximum predetermined depth consecutive variations.The consecutive variations of recessed depth also can effectively change
The flow direction for becoming gas is more advantageous to combustion so that air-flow can produce stronger tumble flow characteristic after through the air intake duct
Fuel economy is promoted.
Further, described the of the horizontal plane where the minimum point of the second end of recess portion of the invention lower than protrusion
Horizontal plane where the minimum point of two sides.Therefore, for air-flow when flowing through bending channel, the air-flow of bottom can be by the recess portion of bottom
Lifting, and the air-flow at top can be also lifted by protrusion.Since the recessed depth of protrusion height of projection and recess portion is different, top stream
Lifting and bottom airflow lifting it is also different so as to produce stronger tumble flow after through the air intake duct special for air-flow
Property, it is more advantageous to fuel economy promotion.
According to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will be brighter
The above and other objects, advantages and features of the present invention.
Detailed description of the invention
Some specific embodiments of the present invention is described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing:
Fig. 1 is a kind of schematic diagram of air intake duct for methanol engine according to an embodiment of the invention, wherein showing
The angle in first passage direction is gone out；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the rearview of Fig. 1；
Fig. 4 is Fig. 1 perspective view；
Fig. 5 is the perspective view in another direction Fig. 1；
Fig. 6 is the perspective view in another direction Fig. 1；
Fig. 7 is the bottom view of Fig. 1.
Each symbol expression is meant that in figure:
1, first passage, 2, second channel, 3, bending channel, 4, recess portion, 41, first end, 42, second end, 5, protrusion,
51, the first side, 52, second side, 6, mounting portion.
Specific embodiment
The present invention provides a kind of air intake duct for methanol engine, the air intake duct is mounted on engine cylinder cover
In.Methanol and air enter combusted cylinder by the air intake duct.Therefore, the structure of air intake duct of the present invention makes the air-flow being passed through
Vortex and tumble flow are generated simultaneously, so that the tumble flow of air-flow is stronger, so that the tubulence energy of bigger cylinder compresses top dead centre is obtained,
So that methanol fuel energy is bigger, it is more advantageous to the burning of methanol, to obtain the optimum performance of methanol fuel.
As shown in Figure 1, air intake duct is successively by entrance, first passage 1, bending channel 3, second channel 2 and outlet
And it constitutes.One end of first passage 1 is connected with entrance；One end of second channel 2 is connected with outlet；And the both ends of bending channel 3
It is separately connected the first passage 1 and the second channel 2.Therefore, the air intake duct is successively led to by the entrance, described first
Road 1, the bending channel 3, the second channel 2 and the outlet and constitute.In one embodiment, the air inlet
The first passage 1, the bending channel 3 and the second channel 2 in road can be integrated molding.Then pass through specific angle
The repairing type knife of degree processes the specific structure of 3 upper recess 4 and protrusion 5 of bending channel.
Further, the axis extended line of the first passage 1 intersects with the central axis extended line of the second channel 2
There is predetermined angular afterwards.Since air intake duct is mounted at engine cylinder cap, in order to meet inlet stability installation
Requirement at engine cylinder cap, the predetermined angular are 90 degree.In other embodiments, first passage 1 and second channel 2
Angle be also possible to other be suitble to air-flow air inlets, be suitble to air intake duct installation angle.Therefore, bending channel 3 is in order to preferably
First passage 1 and second channel 2 are connected, the rough bending angle of bending channel 3 also should be 90 degree.Air-flow is logical by first
After road 1 enters bending channel 3, flow direction can change with the bending angle of bending channel 3, change in air current flow direction
When change, air-flow can generate certain vortex.
As shown in Figures 1 to 7, the structure of bending channel 3 is shown in detail.In order to enable air-flow is passing through bending channel 3
Strong vortex and tumble flow are obtained later, so that being uniformly mixed between air-flow, enhances the tubulence energy of air-flow, and therefore, bending is logical
Road 3 is provided with recess portion 4 and protrusion 5.The bending channel 3 is bent around a center of circle, and the bending channel 3 has close to the circle
The distal side of the nearside of the heart and the separate center of circle.
In the nearside, equipped with the nearside wall surface extension along the bending channel 3 towards 3 inner-concave of bending channel
The recess portion 4 entered.The recess portion 4 has the first end 41 close to the first passage 1 and the second end close to the second channel 2
42.In some embodiments, the first end 41 of the recess portion 4 is towards the 3 internal recess minimum predetermined depth of bending channel,
And the second end 42 is towards the 3 internal recess maximum predetermined depth of bending channel.The recessed depth of the recess portion 4 is from described
The minimum predetermined depth of one end 41 to the second end 42 maximum predetermined depth consecutive variations.That is, the recess portion 4 is adopted
It is designed with fish maw shape, is extended along the proximal bend wall surface of bending channel 3.When air-flow passes through the recess portion 4 of bending channel 3, quilt
The concave portion steric hindrance of recess portion 4 hinders, to reduce the flow velocity of air-flow.Preferably, the maximum predetermined depth can be 2 centimetres.
In other embodiments, depth required for the maximum predetermined depth can also change more to adapt to air-flow velocity.Preferably,
The minimum predetermined depth can be zero centimetre.In other embodiments, the minimum predetermined depth can also be more adaptation gas
Flow depth required for flow direction changes.Also, by taking Fig. 1 as an example, the direction that air-flow is flowed into toward first passage 1 is level side
To it can be seen in the drawing that the horizontal plane where the minimum point of the second end 42 is higher than the level where the first end 41
Face.Therefore, because recess portion 4 be in their extension direction extended obliquely upward by bottom it is recessed, air-flow when by recess portion 4,
It can be lifted, so that air current flow direction is raised to another direction far from recess portion 4 from 4 place of recess portion, consequently facilitating
Air-flow generates tumble flow.
In the distal side, the court equipped with the distal side wall surface extension along the bending channel 3 deviates from 3 side of bending channel
To the protrusion 5 of protrusion.The protrusion 5 has the first side 51 close to the first passage 1 and the close to the second channel 2
Two sides 52.First side 51 is towards far from the maximum predetermined altitude of 3 direction of bending channel protrusion, and described second side 52 is towards separate
The minimum predetermined altitude of 3 direction of bending channel protrusion.The height of projection of the protrusion 5 is predetermined from the maximum of first side 51
Highly to the minimum predetermined altitude consecutive variations of described second side 52.In some embodiments, the minimum predetermined altitude is zero.
Wherein, the setting of minimum predetermined altitude and maximum predetermined altitude, which can satisfy after air-flow enters air intake duct, changes nyctitropic demand.
Preferably, the maximum predetermined altitude can be 3 centimetres.In other embodiments, the maximum predetermined altitude can also be full
Sufficient air-flow enters after air intake duct the height value for changing nyctitropic demand.When the air-flow by bending channel 3 is by protrusion 5, by
Flow section is caused suddenly to increase in protrusion, conducive to the more preferable formation for causing air-flow tumble flow.Then, air-flow is on the first side 51
The limitation after highest point by maximum predetermined altitude is risen to, and since the predetermined altitude of protrusion 5 is from the first side 51 to second side
It is gradually decreased between 52, therefore, air-flow has the tendency that moving downward from the first side 51 to second side 52.In practical more detailed gas
In the mobility status of stream, the shape of protrusion 5 also helps the formation for the tumble flow state for causing air-flow more complicated.
As described above, the structure that the recess portion 4 of bending channel 3 is combined with protrusion 5, is more advantageous to the formation of air-flow tumble flow.
Horizontal plane where the minimum point of the second end 42 is lower than the horizontal plane where the minimum point of described second side 52.Bottom airflow
Its flow velocity can be reduced when passing through recess portion 4, therefore passes through the bottom airflow stream of recess portion 4 close to the upper air velocity ratio of protrusion 5
It is fast fast.And due to the special shape of recess portion 4 and protrusion 5, bottom airflow lifting, the flow direction of upper air, which has, to be moved downward
Trend, therefore be conducive to uniform mixing of the air-flow in air intake duct and mentioned so that the combustion reaction later in step is more complete
High efficiency of combustion.Also, bottom airflow is lifted, the downward movement tendency of upper air, is also beneficial to be vortexed comprehensive with tumble flow
Close the formation of flow regime.
Further, the first side 51 of the first end 41 of the recess portion 4 and the protrusion 5 is located at logical perpendicular to the bending
On the same cross section of the axis interception in road 3.That is, air-flow, when flowing through bending channel 3, bottom airflow is lifted, on
Air-flow downward movement tendency in portion's carries out simultaneously.
Further, the lobe length of first side 51 to described second side 52 is shorter than the first end 41 to described
The recess length at two ends 42.Because lobe length is very big on the influence of the discharge coefficient of tumble flow state and air-flow, therefore, protrusion is long
Degree is because being shorter than recess length.
Further degree ground, since the air intake duct is mounted in engine cylinder cover, in the institute close to the bending channel 3
It states and is equipped with a mounting portion 6 at the first side 51, the mounting portion 6 is used to avoid the cylinder bolt of the cylinder cover, to reserve
The installation space of cylinder bolt.
After air-flow enters cylinder by the air intake duct of above structure, the Tumble and swirl of air-flow is improved, so that methanol is burning
More evenly, being located at the gaseous mixture at spark-plug location can be easier to be ignited for indoor mixing, reduce the generation for phenomenon of catching fire, make
The more abundant of fuel combustion is obtained, more completely, reduces the consumption of fuel oil.
So far, although those skilled in the art will appreciate that present invention has been shown and described in detail herein multiple shows
Example property embodiment still without departing from the spirit and scope of the present invention, still can according to the present disclosure directly
Determine or deduce out many other variations or modifications consistent with the principles of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers all such other variations or modifications.
Claims (11)
1. a kind of air intake duct for methanol engine, comprising:
First passage, one end are connected with the entrance of the air intake duct；
Second channel, one end are connected with the outlet of the air intake duct；
Bending channel, both ends are separately connected the first passage and the second channel；
Wherein, the bending channel is bent around a center of circle, and the bending channel has close to the nearside in the center of circle and separate
The distal side in the center of circle；
In the nearside, equipped with the nearside wall surface extension along the bending channel towards the recessed of the bending channel internal recess
Portion, the recess portion have the first end close to the first passage and the second end close to the second channel, the second end
Minimum point where horizontal plane be higher than the first end where horizontal plane；
In the distal side, the court equipped with the distal side wall surface extension along the bending channel is away from the bending channel direction protrusion
Protrusion.
2. the air intake duct according to claim 1 for methanol engine, wherein the protrusion has close to described first
Second side of first side in channel and the close second channel, the first side court deviate from bending channel direction protrusion most
Big predetermined altitude, for described second side towards away from the minimum predetermined altitude of bending channel direction protrusion, the protrusion of the protrusion is high
Spend the minimum predetermined altitude consecutive variations from the maximum predetermined altitude of first side to described second side.
3. the air intake duct according to claim 2 for methanol engine, wherein the maximum predetermined altitude is 3 centimetres,
The minimum predetermined altitude is zero.
4. the air intake duct according to claim 2 for methanol engine, wherein first side to described second side
Lobe length is shorter than the recess length of the first end to the second end.
5. the air intake duct of methanol engine is used for described in any one of -4 according to claim 1, wherein the first passage
Axis extended line has predetermined angular after intersecting with the axis extended line of the second channel, the predetermined angular is 90 degree.
6. being used for the air intake duct of methanol engine according to any one of claim 2-4, wherein the second end is most
Horizontal plane where low spot is lower than the horizontal plane where the minimum point of described second side.
7. the air intake duct of methanol engine is used for described in any one of -4 according to claim 1, wherein the first of the recess portion
First side of end and the protrusion is located on the same cross section perpendicular to the axis interception of the bending channel.
8. the air intake duct according to claim 1 for methanol engine, wherein the first end of the recess portion is towards institute
State bending channel internal recess minimum predetermined depth, the second end towards the bending channel internal recess maximum predetermined depth,
The recessed depth of the recess portion continuously becomes from the maximum predetermined depth of minimum predetermined depth to the second end of the first end
Change.
9. the air intake duct according to claim 8 for methanol engine, wherein the maximum predetermined depth is 2 centimetres,
The minimum predetermined depth is zero.
10. the air intake duct of methanol engine is used for described in any one of -4 according to claim 1, wherein the first passage,
The bending channel and the second channel are integrally formed.
11. the air intake duct according to claim 2 for methanol engine, the air intake duct are mounted on engine cylinder cover
In, wherein the bending channel is equipped with a mounting portion at the position of first side, and the mounting portion is for avoiding
The cylinder bolt of the cylinder cover.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710597091 | 2017-07-20 | ||
| CN2017105970915 | 2017-07-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107559085A CN107559085A (en) | 2018-01-09 |
| CN107559085B true CN107559085B (en) | 2019-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710875748.XA Active CN107559085B (en) | 2017-07-20 | 2017-09-25 | A kind of air intake duct for methanol engine |
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| CN (1) | CN107559085B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10120303A1 (en) * | 2000-05-04 | 2001-11-08 | Avl List Gmbh | Internal combustion engine has start of spiral tongue spaced from valve middle point by distance equalling about 95 per cent plus or minus 5 per cent of internal diameter of valve seat |
| FR2910541A1 (en) * | 2006-12-21 | 2008-06-27 | Renault Sas | Gas intake system for e.g. direct injection petrol engine, has wheel ramp arranged in gas intake conduit at level of concave side and placed near valve seat, where wheel ramp is obtained by molding in sand core mold |
| CN101571080A (en) * | 2009-03-13 | 2009-11-04 | 重庆长安汽车股份有限公司 | Gasoline engine cylinder head |
| CN202596907U (en) * | 2012-06-11 | 2012-12-12 | 潍柴动力股份有限公司 | High-power gas engine inlet |
| CN205013163U (en) * | 2015-08-31 | 2016-02-03 | 重庆长安汽车股份有限公司 | Height rolls rascally says and engine |
-
2017
- 2017-09-25 CN CN201710875748.XA patent/CN107559085B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10120303A1 (en) * | 2000-05-04 | 2001-11-08 | Avl List Gmbh | Internal combustion engine has start of spiral tongue spaced from valve middle point by distance equalling about 95 per cent plus or minus 5 per cent of internal diameter of valve seat |
| FR2910541A1 (en) * | 2006-12-21 | 2008-06-27 | Renault Sas | Gas intake system for e.g. direct injection petrol engine, has wheel ramp arranged in gas intake conduit at level of concave side and placed near valve seat, where wheel ramp is obtained by molding in sand core mold |
| CN101571080A (en) * | 2009-03-13 | 2009-11-04 | 重庆长安汽车股份有限公司 | Gasoline engine cylinder head |
| CN202596907U (en) * | 2012-06-11 | 2012-12-12 | 潍柴动力股份有限公司 | High-power gas engine inlet |
| CN205013163U (en) * | 2015-08-31 | 2016-02-03 | 重庆长安汽车股份有限公司 | Height rolls rascally says and engine |
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| Publication number | Publication date |
|---|---|
| CN107559085A (en) | 2018-01-09 |
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Address after: 637900 No. 180, Section 1, Jianan Road, Jialing District, Nanchong City, Sichuan Province Patentee after: GEELY SICHUAN COMMERCIAL VEHICLE Co.,Ltd. Country or region after: China Patentee after: Zhejiang Geely Remote New Energy Commercial Vehicle Group Co.,Ltd. Patentee after: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Address before: 637900 No. 180, Section 1, Jianan Road, Jialing District, Nanchong City, Sichuan Province Patentee before: GEELY SICHUAN COMMERCIAL VEHICLE Co.,Ltd. Country or region before: China Patentee before: ZHEJIANG GEELY NEW ENERGY COMMERCIAL VEHICLE GROUP Co.,Ltd. Patentee before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Address after: 637900 No. 180, Section 1, Jianan Road, Jialing District, Nanchong City, Sichuan Province Patentee after: GEELY SICHUAN COMMERCIAL VEHICLE Co.,Ltd. Country or region after: China Patentee after: ZHEJIANG GEELY NEW ENERGY COMMERCIAL VEHICLE GROUP Co.,Ltd. Patentee after: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Address before: 637900 No. 180, Section 1, Jianan Road, Jialing District, Nanchong City, Sichuan Province Patentee before: GEELY SICHUAN COMMERCIAL VEHICLE Co.,Ltd. Country or region before: China Patentee before: ZHEJIANG GEELY NEW ENERGY COMMERCIAL VEHICLES Co.,Ltd. Patentee before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. |
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Effective date of registration: 20240311 Address after: 310051 No. 1760, Jiangling Road, Hangzhou, Zhejiang, Binjiang District Patentee after: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Country or region after: China Patentee after: Zhejiang Geely Remote New Energy Commercial Vehicle Group Co.,Ltd. Patentee after: Tianjin Alcohol Hydrogen Research and Development Co.,Ltd. Address before: 637900 No. 180, Section 1, Jianan Road, Jialing District, Nanchong City, Sichuan Province Patentee before: GEELY SICHUAN COMMERCIAL VEHICLE Co.,Ltd. Country or region before: China Patentee before: Zhejiang Geely Remote New Energy Commercial Vehicle Group Co.,Ltd. Patentee before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. |