CN102808709B - Variable air inlet manifold for gasoline engine - Google Patents
Variable air inlet manifold for gasoline engine Download PDFInfo
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- CN102808709B CN102808709B CN201210303546.5A CN201210303546A CN102808709B CN 102808709 B CN102808709 B CN 102808709B CN 201210303546 A CN201210303546 A CN 201210303546A CN 102808709 B CN102808709 B CN 102808709B
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- intake branch
- air intake
- intake manifold
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Abstract
The invention discloses a variable air inlet manifold for a gasoline engine. A short air passage and a long air passage which are communicated with each other are arranged in an air passage of the air inlet manifold, wherein a switching part which is used for opening or closing the short air passage is arranged at the air inlet of the short air passage. The switching part is a rotary drum capable of being in fixed-axis rotation, and a flow passing through hole is formed in the rotary drum along the direction vertical to the middle axis of the rotary drum; when the flow passing through hole in the rotary drum is enabled to be connected with the air inlet of the short air passage by rotating the rotary drum, the short air passage is in an opening state; and when the flow passing through hole in the rotary drum is enabled to be divorced from the air inlet of the short air passage by rotating the rotary drum, the short air passage is blocked and is in a closed state. The variable air inlet manifold for the gasoline engine has the advantages that the long air passage and the short air passage designed in the variable air inlet manifold are switched, and all air inlet branches are differently designed structurally, so that the uniformity of inlet air can be ensured, and the performance of the engine is improved.
Description
Technical field
The present invention relates to a kind of intake manifold for motor, particularly relate to a kind of petrolic variable intake manifold, the structural change of variable by airway length, each air flue, to ensure engine performance and air inlet uniformity.
Background technique
Petrolic operating rotational speed range is more and more wider, and in its whole operating rotational speed range, the air inflow needed for each operating mode is different.Gas is entered in cylinder by intake manifold and participates in burning, and the air-flow entered in cylinder by intake manifold is at present constant, air inflow required under can not meeting each operating mode.And, in order to ensure the uniformity of in-cylinder combustion, motor each cylinder air inlet uniformity sexual deviation under certain rotating speed must ensure in very little scope, and each manifold size of the intake manifold designed at present is the same, ensure design proposal all more complicated of intake uniformity, and be not very clear and definite.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, provides a kind of petrolic variable intake manifold, the structural change of variable by airway length, each air flue, to ensure engine performance and air inlet uniformity.
For achieving the above object, technological scheme of the present invention is: a kind of petrolic variable intake manifold, logical the losing heart and long air flue that be connected with each other is provided with in the air flue of described intake manifold, wherein, to lose heart and the connectivity part of long air flue is provided with for opening or close the switch part of losing heart described.
Preferably, described switch part is one can the cylinder of fixed-axis rotation, is provided with opening on which cylinder, on the direction perpendicular to cylinder axis; When rotating drum makes the mistake opening on it be undertaken on the suction port of losing heart, lose heart and be in opening state; When rotating drum makes the mistake opening on it depart from the suction port of losing heart, lose heart and stopped, be in closed condition.
Preferably, in described intake manifold, be provided with multiple air flue, be distributed in relative suction port by near on direction far away, and the chamfering of the port of air intake branch corresponding to each air flue is changed from small to big successively.
Preferably, in described intake manifold, be provided with 4 air flues, be distributed in relative suction port by near on direction far away, and be designated as air intake branch a, b, c, d successively; Wherein, from the chamfering of the port of the nearest air intake branch a of suction port between R0 ~ R2, the chamfering of the port of the air intake branch b adjacent with air intake branch a is between R2 ~ R4, the chamfering of the port of the air intake branch c adjacent with air intake branch b is between R5 ~ R8, and the chamfering of the port of the air intake branch d adjacent with air intake branch c is between R5 ~ R8.
Preferably, in described intake manifold, be provided with multiple air flue, be distributed in relative suction port by near to direction far away, and the sectional area of air intake branch corresponding to each air flue changes from small to big successively.
Preferably, in described intake manifold, be provided with 4 air flues, be distributed in relative suction port by near on direction far away, and be designated as air intake branch a, b, c, d successively; The cross sectional area of described each air intake branch is designated as S1, S2, S3, S4 respectively, and it meets following relation: S2 larger than S1 2% ~ 4%, S3 larger than S1 4% ~ 7%, S4 larger than S1 6% ~ 10%.
Beneficial effect of the present invention is, described petrolic variable intake manifold, by the long air flue designed in it and the switching of losing heart, in conjunction with the structural difference design of each air intake branch, can ensure air inlet uniformity, improve the performance of motor.
Accompanying drawing explanation
Fig. 1 shows STRUCTURE DECOMPOSITION figure and the overall structure figure of petrolic variable intake manifold in one embodiment of the invention;
Fig. 2 shows the enlarged view of the major component of the intake manifold along the axis cutting in Fig. 1;
Fig. 3 shows the scheme of installation of cylinder in intake manifold;
Fig. 4 shows rotary drum to be made to lose heart when closing, along the schematic diagram in air current flow direction in the intake manifold of the axis cutting shown in Fig. 3;
Fig. 5 shows rotary drum to be made to lose heart when opening, along the schematic diagram in air current flow direction in the intake manifold of the axis cutting shown in Fig. 3;
Fig. 6 shows the variation tendency of each air intake branch port chamfering;
Fig. 7 is the A-A sectional view close-up schematic view of Fig. 1, shows the variation tendency of the sectional area of each air intake branch;
Fig. 8 is for utilizing the deviation chart of the intake uniformity of intake manifold described in cae analysis.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.But, as long as no special explanation, the scope that the size, material, shape, relative position etc. of the parts described in embodiment are not meant to limit the present invention, and be only used to citing is described.
As shown in Figures 1 to 5, described petrolic variable intake manifold 1, be provided with in air flue be connected with each other logical lose heart 108 with long air flue 107, wherein, its connectivity part be provided with for open or close lose heart 108 switch part.
Described switch part is one can the cylinder 2 of fixed-axis rotation, on described cylinder 2, on the direction perpendicular to cylinder axis, is provided with opening; Rotating drum 2 make on it cross opening be undertaken on lose heart 108 suction port time, losing heart 108 is in opening state; Rotating drum 2 make on it cross opening depart from lose heart 108 suction port time, losing heart 108 is stopped, is in closed condition.
Particularly, as shown in Figure 1, described variable intake manifold 1 by upper slice 101, in upper slice 102, middle bottom sheet 103 and bottom sheet 104 form, wherein, in upper slice 102 provide a cavity 113 for mounting rotary drum 2, middle bottom sheet 103 provides closure mounting flange and and the fixing mounting flange of cylinder cap.In upper slice 102 vacuum chamber and pressure stabilizing cavities constituting this manifold together with middle bottom sheet 103.
In fig. 2, along being provided with long air flue 107 in the air flue can seeing this intake manifold 1 in the sectional view of axis clearly and losing heart 108.Long air flue 107 by upper slice 101 inwalls 111, in upper slice 102 upper inside wall 112, in upper slice 102 lower inner wall 114, the upper inside wall 115 of middle bottom sheet 103, the lower inner wall 116 of middle bottom sheet 103, and the cavity of bottom sheet 104 inwall 117 composition is formed.Described lose heart 108 by upper slice 102 cavity 113, in upper slice 102 lower inner wall 114 and upper slice 101 the cavity that forms of inwall 111 form.The length of described long air flue 107 between 530mm ~ 630mm, lose heart 108 length between 270mm ~ 370mm.
By shown in Fig. 3 to Fig. 5, cylinder 2 is installed to after in intake manifold 1, is moved along direction 6 by vacuum actor 5, and cylinder 2 rotates, when on it cross opening be undertaken on lose heart 108 suction port time, losing heart 108 is in opening state; Rotating drum 2 make on it cross opening depart from lose heart 108 suction port time, losing heart 108 is stopped, is in closed condition.Thus, under the on-off action of cylinder 2, air-flow can along different path flow.When lose heart 108 close time, as Fig. 4, air-flow, not by losing heart 108, can only flow along long air flue 107; When lose heart 108 open time, as Fig. 5, according to fluid mechanics, gas can along the less channel flow of resistance, and therefore air-flow 108 to flow along losing heart.So just achieve and realize different air inflows when different operating mode according to required air inflow, improve the performance of motor.
But described intake manifold is from one end air inlet, as shown in Figure 1, if under identical condition, the air inflow of each cylinder is different certainly, does not meet designing requirement.Calculated by CAE, utilize the change of structure to realize each cylinder and carry out the deviation of uniformity within the specific limits, below describe the air intake structure of its intake manifold in detail.
In order to the gas output of each air flue of equilibrium, be provided with multiple air flue in described intake manifold, according to distance suction port by nearly direction extremely far away, the chamfering of the port of the air intake branch that each air flue is corresponding is changed from small to big successively, is designated as air intake branch a, b, c, d respectively.In figure 6, from the chamfering 308 of the port of the nearest air intake branch a304 of suction port between R0 ~ R2, the chamfering 307 of the port of the air intake branch b303 adjacent with air intake branch a304 is between R2 ~ R4, the chamfering 306 of the port of the air intake branch c302 adjacent with air intake branch b303 is between R5 ~ R8, and adjacent with air intake branch c302 is also that the chamfering 305 of the port of distance suction port air intake branch d301 is farthest between R5 ~ R8.
For another example Fig. 7 is the gas path cross sections enlarged diagram of Fig. 6, and according to distance suction port by nearly direction extremely far away, the sectional area of the air intake branch that each air flue is corresponding changes from small to big successively.Particularly, the cross sectional area S1 of the air intake branch a304 that distance suction port is nearest, sequentially, the cross sectional area S4 of the cross sectional area S3 of the cross sectional area S2 of air intake branch b303, air intake branch c302, air intake branch d301, the section area S1 of air intake branch 304 is significantly less than cross-section area S2, S3, S4 of other air intake branches, and cross-section area S2 larger than cross-section area S1 2% ~ 4%, cross-section area S3 larger than cross-section area S1 4% ~ 7%, cross-section area S4 larger than cross-section area S1 6% ~ 10%.
By above structural design, effectively can reduce the gas circulating resistance of other air intake branches, according to the change of the distance of air intake branch distance suction port, the air intake branch that distance is far away requires that circulated gases resistance is less, so just can ensure that each air intake branch air inlet uniformity sexual deviation is in design object ± 2%, as shown in Figure 8.
Be only preferred embodiment of the present invention in sum, be not used for limiting practical range of the present invention.Namely all equivalences done according to the content of the present patent application the scope of the claims change and modify, and all should belong to technology category of the present invention.
Claims (4)
1. a petrolic variable intake manifold, it is characterized in that: described intake manifold is from one end air inlet, 4 air flues are provided with in this intake manifold, be distributed in relative suction port by near on direction far away, and be designated as air intake branch a, b, c, d successively, the sectional area of the air intake branch that each air flue is corresponding changes from small to big successively, the cross sectional area of described each air intake branch is designated as S1, S2, S3, S4 respectively, it meets following relation: S2 larger than S1 2% ~ 4%, S3 larger than S1 4% ~ 7%, S4 larger than S1 6% ~ 10%; Be provided with logical the losing heart and long air flue that be connected with each other in the air flue of described intake manifold, wherein, lose heart and the connectivity part of long air flue is provided with for opening or close the switch part of losing heart described.
2. petrolic variable intake manifold according to claim 1, is characterized in that: described switch part is one can the cylinder of fixed-axis rotation, is provided with opening on which cylinder, on the direction perpendicular to cylinder axis; When rotating drum makes the mistake opening on it be undertaken on the suction port of losing heart, lose heart and be in opening state; When rotating drum makes the mistake opening on it depart from the suction port of losing heart, lose heart and stopped, be in closed condition.
3. petrolic variable intake manifold according to claim 1 and 2, it is characterized in that: in described intake manifold, be provided with multiple air flue, be distributed in relative suction port by near on direction far away, and the chamfering of the port of air intake branch corresponding to each air flue is changed from small to big successively.
4. petrolic variable intake manifold according to claim 3, it is characterized in that: from the chamfering of the port of the nearest air intake branch a of suction port between R0 ~ R2, the chamfering of the port of the air intake branch b adjacent with air intake branch a is between R2 ~ R4, the chamfering of the port of the air intake branch c adjacent with air intake branch b is between R5 ~ R8, and the chamfering of the port of the air intake branch d adjacent with air intake branch c is between R5 ~ R8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210303546.5A CN102808709B (en) | 2012-08-24 | 2012-08-24 | Variable air inlet manifold for gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210303546.5A CN102808709B (en) | 2012-08-24 | 2012-08-24 | Variable air inlet manifold for gasoline engine |
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| Publication Number | Publication Date |
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| CN102808709A CN102808709A (en) | 2012-12-05 |
| CN102808709B true CN102808709B (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210303546.5A Active CN102808709B (en) | 2012-08-24 | 2012-08-24 | Variable air inlet manifold for gasoline engine |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100423B (en) * | 2013-04-11 | 2016-03-16 | 广州汽车集团股份有限公司 | A kind of intake manifold and motor car engine |
| CN103953477B (en) * | 2014-04-29 | 2016-01-20 | 沈阳航天新光汽车零部件有限公司 | A kind of petrolic variable volume intake system |
| CN103925070B (en) * | 2014-05-08 | 2016-01-20 | 安徽江淮汽车股份有限公司 | Pipeline and the intake manifold of pipeline before there is this intercooler before intercooler |
| CN106194522B (en) * | 2016-08-17 | 2018-08-10 | 安徽江淮汽车集团股份有限公司 | Motor intake manifold and engine |
| CN107829854A (en) * | 2017-10-25 | 2018-03-23 | 安徽江淮汽车集团股份有限公司 | A kind of admission manifold branch structure and a kind of gas handling system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040211390A1 (en) * | 2000-12-27 | 2004-10-28 | Gyu-Hwan Kim | Variable tumble flow-generating device of engine and manufacturing method of variable tumble flow-generating intake port |
| CN100458115C (en) * | 2005-12-29 | 2009-02-04 | 比亚迪股份有限公司 | Variable inlet duct and inlet system containing same |
| CN101571073A (en) * | 2008-04-30 | 2009-11-04 | 比亚迪股份有限公司 | Variable air intake pipe and variable air intake system including same |
| CN202789241U (en) * | 2012-08-24 | 2013-03-13 | 安徽江淮汽车股份有限公司 | Variable air intake manifold of gasoline engine |
-
2012
- 2012-08-24 CN CN201210303546.5A patent/CN102808709B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040211390A1 (en) * | 2000-12-27 | 2004-10-28 | Gyu-Hwan Kim | Variable tumble flow-generating device of engine and manufacturing method of variable tumble flow-generating intake port |
| CN100458115C (en) * | 2005-12-29 | 2009-02-04 | 比亚迪股份有限公司 | Variable inlet duct and inlet system containing same |
| CN101571073A (en) * | 2008-04-30 | 2009-11-04 | 比亚迪股份有限公司 | Variable air intake pipe and variable air intake system including same |
| CN202789241U (en) * | 2012-08-24 | 2013-03-13 | 安徽江淮汽车股份有限公司 | Variable air intake manifold of gasoline engine |
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| CN102808709A (en) | 2012-12-05 |
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Address after: Hefei City, Anhui Province, 230022 East Road No. 176 Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: Hefei City, Anhui Province, 230022 East Road No. 176 Patentee before: Anhui Jianghuai Automobile Co., Ltd. |
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Address after: 230601 No. 99 Ziyun Road, Hefei Economic and Technological Development Zone, Anhui Province Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230022 No. 176 Dongliu Road, Hefei City, Anhui Province Patentee before: Anhui Jianghuai Automobile Group Limited by Share Ltd |