CN113323779A - Engine intake manifold - Google Patents
Engine intake manifold Download PDFInfo
- Publication number
- CN113323779A CN113323779A CN202110736906.XA CN202110736906A CN113323779A CN 113323779 A CN113323779 A CN 113323779A CN 202110736906 A CN202110736906 A CN 202110736906A CN 113323779 A CN113323779 A CN 113323779A
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- China
- Prior art keywords
- intake manifold
- air inlet
- engine
- engine intake
- gas
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/104—Intake manifolds
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Characterised By The Charging Evacuation (AREA)
Abstract
The present disclosure provides an engine intake manifold comprising: a plenum chamber, comprising: the air inlet introducing port is used for introducing air introduced from the outside into the pressure stabilizing cavity; the pressure stabilizing part is connected with the air inlet leading-in opening at one end and is used for buffering the gas introduced by the air inlet leading-in opening to realize the pressure stabilization of the gas introduced by the air inlet leading-in opening and form a stabilized pressure gas; and the air inlet branch pipe group comprises a plurality of air inlet branch pipes, and the air inlet branch pipe group is connected with the other end of the pressure stabilizing part and is used for shunting and guiding out the pressure stabilizing gas. The engine intake manifold can reduce the pumping loss of the engine, improve the inflation efficiency and improve the performance of the engine.
Description
Technical Field
The present disclosure relates to intake manifold technology, and more particularly to an engine intake manifold.
Background
The engine intake manifold is an important component of an engine intake system, and the main function of the engine intake manifold is to deliver more air to each cylinder, and the performance of the engine intake manifold directly affects the intake efficiency and the ventilation loss of the engine, and further affects the output performance of the engine.
For a naturally aspirated engine, particularly a low-speed engine, a longer intake manifold is adopted to increase the intake last-stage pressure by utilizing an intake resonance effect, so that the intake efficiency is improved, the problems of increased intake resistance, increased pressure loss and reduced flow coefficient of the longer intake manifold are caused, and the structural design of the intake manifold is greatly challenged.
The structure of an intake manifold in the current market generally adopts a rough design according to the arrangement space of a finished automobile and an engine, and is only optimized properly through software, so that the intake manifold has a good effect on the aspect of flow conductivity while considering uniformity.
Disclosure of Invention
Technical problem to be solved
Based on the above problem, the present disclosure provides an engine intake manifold to alleviate technical problem such as big, the flow coefficient is low that air intake branch can not steadily conduct gas and lead to the circulation resistance among the prior art.
(II) technical scheme
The present disclosure provides an engine intake manifold comprising:
a plenum chamber, comprising:
the air inlet introducing port is used for introducing air introduced from the outside into the pressure stabilizing cavity;
the pressure stabilizing part is connected with the air inlet leading-in opening at one end and is used for buffering the gas introduced by the air inlet leading-in opening to realize the pressure stabilization of the gas introduced by the air inlet leading-in opening and form a stabilized pressure gas;
and the air inlet branch pipe group comprises a plurality of air inlet branch pipes, and the air inlet branch pipe group is connected with the other end of the pressure stabilizing part and is used for shunting and guiding out the pressure stabilizing gas.
In the embodiment of the present disclosure, the trajectory line of each of the plurality of intake branch pipes is an archimedean spiral, which can ensure that gas is smoothly guided out.
In the disclosed embodiment, the intake branch pipes of the plurality of intake branch pipes are arranged in a row in a stacked manner.
In the disclosed embodiment, a cross-sectional width of each of the intake branch pipes in the direction in which the plurality of intake branch pipes are aligned gradually increases with a gas leading-out direction of the trajectory line.
In the disclosed embodiment, a cross-sectional width of each of the intake branch pipes in the direction perpendicular to the alignment line gradually decreases in a gas leading-out direction of the trajectory line.
In the disclosed embodiment, a cross-sectional area of each of the plurality of intake branch pipes gradually decreases in a gas leading-out direction of the trajectory line.
In an embodiment of the present disclosure, the plurality of intake branches includes four intake branches.
In the disclosed embodiment, the trajectory line curvature at the junction of each of the plurality of intake branch pipes and the surge tank is continuous.
In the disclosed embodiment, the engine intake manifold is integrally formed.
In an embodiment of the disclosure, the rotation angle of the archimedes spiral line segment of the trajectory line is 360 degrees.
(III) advantageous effects
According to the technical scheme, the engine intake manifold has at least one or part of the following beneficial effects:
(1) the engine air inlet system is reasonable in design and compact in structure, and provides a large flow area and small flow resistance for the engine air inlet system in a limited engine arrangement space; and
(2) the pumping loss of the engine can be reduced, the inflation efficiency is improved, and the performance of the engine is improved.
Drawings
FIG. 1 is a graph of the curvature of the center trajectory of an intake manifold of an engine according to an embodiment of the present disclosure.
FIG. 2 is a cross-sectional view of an intake manifold of an engine according to an embodiment of the present disclosure, taken from a starting cross-sectional view along a trace.
FIG. 3 is a final cross-sectional dimension view of an intake manifold of an engine intake manifold along a trace sweep of the intake manifold according to an embodiment of the disclosure.
Fig. 4 is a graph showing the variation trend of the widths of the intake branch pipes of the intake manifold of the engine according to the embodiment of the present disclosure scanned along the direction in which the intake branch pipes are arranged in a row.
Fig. 5 is a graph showing the variation trend of the widths of the cross sections of the intake branch pipes of the intake manifold of the engine according to the embodiment of the present disclosure scanned in a direction perpendicular to the direction in which the intake branch pipes are arranged in a row.
FIG. 6 is a graph showing the trend of the change of the cross-sectional area of an intake branch pipe of an intake manifold of an engine according to the embodiment of the disclosure along a track.
Detailed Description
The utility model provides an engine intake manifold, intake manifold reasonable in design, compact structure in limited engine arrangement space, provides great flow area, less circulation resistance for engine air intake system to reduce engine pumping loss, improve and aerify efficiency, improve engine performance. Can overcome the main defects of the existing intake manifold.
For the purpose of promoting a better understanding of the objects, aspects and advantages of the present disclosure, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
In an embodiment of the present disclosure, there is provided an engine intake manifold, as shown in fig. 1 to 6, including:
a plenum chamber, comprising:
the air inlet introducing port is used for introducing air introduced from the outside into the pressure stabilizing cavity;
the pressure stabilizing part is connected with the air inlet leading-in opening at one end and is used for buffering the gas introduced by the air inlet leading-in opening to realize the pressure stabilization of the gas introduced by the air inlet leading-in opening and form a stabilized pressure gas;
and the air inlet branch pipe group comprises a plurality of air inlet branch pipes, and the air inlet branch pipe group is connected with the other end of the pressure stabilizing part and is used for shunting and guiding out the pressure stabilizing gas.
In the embodiment of the present disclosure, the trajectory line of each of the plurality of intake branch pipes is an archimedean spiral, which can ensure that gas is smoothly guided out.
In the disclosed embodiment, the intake branch pipes of the plurality of intake branch pipes are arranged in a row in a stacked manner.
In the disclosed embodiment, a cross-sectional width of each of the intake branch pipes in the direction in which the plurality of intake branch pipes are aligned gradually increases with a gas leading-out direction of the trajectory line.
In the disclosed embodiment, a cross-sectional width of each of the intake branch pipes in the direction perpendicular to the alignment line gradually decreases in a gas leading-out direction of the trajectory line.
In the disclosed embodiment, a cross-sectional area of each of the plurality of intake branch pipes gradually decreases in a gas leading-out direction of the trajectory line.
In an embodiment of the present disclosure, the plurality of intake branches includes four intake branches.
In the disclosed embodiment, the trajectory line curvature at the junction of each of the plurality of intake branch pipes and the surge tank is continuous.
In the disclosed embodiment, the engine intake manifold is integrally formed.
In an embodiment of the disclosure, the rotation angle of the archimedes spiral line segment of the trajectory line is 360 degrees.
In the embodiment of the present disclosure, each branch pipe trajectory line adopts an archimedes spiral line, and the cross-sectional shape of each branch pipe adopts a rectangular shape.
The present invention is described in further detail below with reference to the attached drawing figures.
As shown in FIG. 1, the thick solid line of the inner circle represents the central trajectory line of the branch pipe, the lengths of the thin solid lines with different lengths arranged at intervals in the middle represent the curvature of the inner circle at the corresponding point, the thin solid line of the outer circle represents the connecting line of the curvature, and 50 in the figure represents the curvature magnification ratio, and as can be seen from FIG. 1, the connecting line of the curvature of the central trajectory line of the branch pipe is a relatively smooth curve representing the continuous curvature of each point of the central trajectory line of the branch pipe. As shown in fig. 2, a cross-sectional dimension of the manifold is shown starting along the trace sweep. As shown in fig. 3, a final cross-sectional dimension map of the manifold along the trajectory is shown.
As shown in fig. 4, a trend graph of the width of each cross section scanned by the branch pipe along the track line is shown, wherein the X-axis represents the position of each cross section on the track line (which is shown in proportion, 0 represents the starting point, and 100 represents the end point), and the Y-axis represents the actual size of the cross section width, and the unit is mm.
As shown in fig. 5, a trend graph of the height of each cross section scanned by the branch pipe along the track line is shown, wherein the X-axis represents the position of each cross section on the track line (which is shown in proportion, 0 represents the starting point, and 100 represents the end point), and the Y-axis represents the actual height of the cross section, and the unit is mm.
As shown in FIG. 6, a graph showing the variation trend of the cross-sectional area of the branch pipe scanned along the trajectory is shown, wherein the horizontal axis represents the section number along the trajectory, and the vertical axis corresponds to the area of the cross-section at the position of the horizontal axis, and the unit is mm2。
In the disclosed embodiment, each branch trajectory line is an archimedes spiral obtained by the following equation (using a cylindrical coordinate system):
a＝0.25
theta＝45+t*350
r＝25+a*theta
z＝0
wherein t is 0 to 1
The Archimedes spiral is used as a branch track line, and the curvature is continuous (as shown in figure 1);
the cross section of the branch pipe is rectangular, the length and the width are obtained by a relation curve with continuous curvature (shown in figures 4 and 5), and the cross section area is continuously reduced by the curvature (shown in figure 6).
The above design can obtain lower flow resistance, and thus can obtain larger flow coefficient
So far, the embodiments of the present disclosure have been described in detail with reference to the accompanying drawings. It is to be noted that, in the attached drawings or in the description, the implementation modes not shown or described are all the modes known by the ordinary skilled person in the field of technology, and are not described in detail. Further, the above definitions of the various elements and methods are not limited to the various specific structures, shapes or arrangements of parts mentioned in the examples, which may be easily modified or substituted by those of ordinary skill in the art.
From the above description, those skilled in the art should be aware of the engine intake manifold of the present disclosure.
In conclusion, the present disclosure provides an engine intake manifold, which has a reasonable design and a compact structure, and provides a larger flow area and a smaller flow resistance for an engine intake system in a limited engine layout space, so as to reduce the pumping loss of the engine, improve the inflation efficiency, and improve the performance of the engine.
It should also be noted that directional terms, such as "upper", "lower", "front", "rear", "left", "right", and the like, used in the embodiments are only directions referring to the drawings, and are not intended to limit the scope of the present disclosure. Throughout the drawings, like elements are represented by like or similar reference numerals. Conventional structures or constructions will be omitted when they may obscure the understanding of the present disclosure.
And the shapes and sizes of the respective components in the drawings do not reflect actual sizes and proportions, but merely illustrate the contents of the embodiments of the present disclosure. Furthermore, in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.
Unless otherwise indicated, the numerical parameters set forth in the specification and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by the present disclosure. In particular, all numbers expressing quantities of ingredients, reaction conditions, and so forth used in the specification and claims are to be understood as being modified in all instances by the term "about". Generally, the expression is meant to encompass variations of ± 10% in some embodiments, 5% in some embodiments, 1% in some embodiments, 0.5% in some embodiments by the specified amount.
Furthermore, the word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.
The use of ordinal numbers such as "first," "second," "third," etc., in the specification and claims to modify a corresponding element does not by itself connote any ordinal number of the element or any ordering of one element from another or the order of manufacture, and the use of the ordinal numbers is only used to distinguish one element having a certain name from another element having a same name.
In addition, unless steps are specifically described or must occur in sequence, the order of the steps is not limited to that listed above and may be changed or rearranged as desired by the desired design. The embodiments described above may be mixed and matched with each other or with other embodiments based on design and reliability considerations, i.e., technical features in different embodiments may be freely combined to form further embodiments.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Also in the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the disclosure, various features of the disclosure are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various disclosed aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that is, the claimed disclosure requires more features than are expressly recited in each claim. Rather, as the following claims reflect, disclosed aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this disclosure.
The above-mentioned embodiments are intended to illustrate the objects, aspects and advantages of the present disclosure in further detail, and it should be understood that the above-mentioned embodiments are only illustrative of the present disclosure and are not intended to limit the present disclosure, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (10)
1. An engine intake manifold comprising:
a plenum chamber, comprising:
the air inlet introducing port is used for introducing air introduced from the outside into the pressure stabilizing cavity;
the pressure stabilizing part is connected with the air inlet leading-in opening at one end and is used for buffering the gas introduced by the air inlet leading-in opening to realize the pressure stabilization of the gas introduced by the air inlet leading-in opening and form a stabilized pressure gas;
and the air inlet branch pipe group comprises a plurality of air inlet branch pipes, and the air inlet branch pipe group is connected with the other end of the pressure stabilizing part and is used for shunting and guiding out the pressure stabilizing gas.
2. The engine intake manifold according to claim 1, wherein a trajectory line of each of the plurality of intake branch pipes is an archimedean spiral, which can ensure smooth gas discharge.
3. The engine intake manifold according to claim 1, wherein the intake branch pipes of the plurality of intake branch pipes are arranged in a row in a stacked manner.
4. The engine intake manifold according to claim 3, wherein a cross-sectional width of each intake branch pipe of the plurality of intake branch pipes in the in-line direction gradually increases with a gas leading-out direction of the trajectory line.
5. The engine intake manifold according to claim 3, wherein a cross-sectional width of each intake branch pipe of the plurality of intake branch pipes in a direction perpendicular to the alignment gradually decreases with a gas leading-out direction of the trajectory line.
6. The engine intake manifold according to claim 3, wherein a cross-sectional area of each of the plurality of intake branch pipes gradually decreases in a gas derivation direction of the trajectory line.
7. The engine intake manifold according to claim 1, wherein the plurality of intake branches comprises four intake branches.
8. The engine intake manifold according to claim 7, wherein the curvature of the trajectory line at the junction of each of the plurality of intake branch pipes and the surge tank is continuous.
9. The engine intake manifold of claim 1, wherein the engine intake manifold is integrally formed.
10. The engine intake manifold according to claim 1, wherein the rotation angle of the archimedean spiral segment of the trajectory line is 360 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110736906.XA CN113323779B (en) | 2021-06-30 | 2021-06-30 | Engine intake manifold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110736906.XA CN113323779B (en) | 2021-06-30 | 2021-06-30 | Engine intake manifold |
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| Publication Number | Publication Date |
|---|---|
| CN113323779A true CN113323779A (en) | 2021-08-31 |
| CN113323779B CN113323779B (en) | 2023-04-11 |
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| CN202110736906.XA Active CN113323779B (en) | 2021-06-30 | 2021-06-30 | Engine intake manifold |
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Citations (7)
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|---|---|---|---|---|
| US20050115535A1 (en) * | 2003-10-20 | 2005-06-02 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Intake manifold |
| JP2006057519A (en) * | 2004-08-19 | 2006-03-02 | Mazda Motor Corp | Intake device for multicylinder engine |
| JP2007187122A (en) * | 2006-01-16 | 2007-07-26 | Toyota Motor Corp | Intake device for internal combustion engine |
| CN200955464Y (en) * | 2006-09-05 | 2007-10-03 | 沈阳华晨金杯汽车有限公司 | Engine novel air-intake manifold branch |
| US20170204819A1 (en) * | 2016-01-18 | 2017-07-20 | Toyota Jidosha Kabushiki Kaisha | Intake manifold and engine including intake manifold |
| CN208966453U (en) * | 2018-09-25 | 2019-06-11 | 浙江吉利动力总成有限公司 | Inlet manifold, engine and automobile |
| CN111594363A (en) * | 2020-06-24 | 2020-08-28 | 天津特瑞捷动力科技有限公司 | High-uniformity intake manifold |
-
2021
- 2021-06-30 CN CN202110736906.XA patent/CN113323779B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050115535A1 (en) * | 2003-10-20 | 2005-06-02 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Intake manifold |
| JP2006057519A (en) * | 2004-08-19 | 2006-03-02 | Mazda Motor Corp | Intake device for multicylinder engine |
| JP2007187122A (en) * | 2006-01-16 | 2007-07-26 | Toyota Motor Corp | Intake device for internal combustion engine |
| CN200955464Y (en) * | 2006-09-05 | 2007-10-03 | 沈阳华晨金杯汽车有限公司 | Engine novel air-intake manifold branch |
| US20170204819A1 (en) * | 2016-01-18 | 2017-07-20 | Toyota Jidosha Kabushiki Kaisha | Intake manifold and engine including intake manifold |
| CN208966453U (en) * | 2018-09-25 | 2019-06-11 | 浙江吉利动力总成有限公司 | Inlet manifold, engine and automobile |
| CN111594363A (en) * | 2020-06-24 | 2020-08-28 | 天津特瑞捷动力科技有限公司 | High-uniformity intake manifold |
Non-Patent Citations (2)
| Title |
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| 吴兴敏等: "《汽车改装》", 31 July 2015, 北京：北京理工大学出版社 * |
| 张成堂等: "《脱粒机》", 30 April 1985, 北京：中国农业机械出版社 * |
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| CN113323779B (en) | 2023-04-11 |
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