CN202789241U - Variable air intake manifold of gasoline engine - Google Patents
Variable air intake manifold of gasoline engine Download PDFInfo
- Publication number
- CN202789241U CN202789241U CN 201220422432 CN201220422432U CN202789241U CN 202789241 U CN202789241 U CN 202789241U CN 201220422432 CN201220422432 CN 201220422432 CN 201220422432 U CN201220422432 U CN 201220422432U CN 202789241 U CN202789241 U CN 202789241U
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- China
- Prior art keywords
- air
- air intake
- intake manifold
- intake branch
- suction port
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Abstract
The utility model discloses a variable air intake manifold of a gasoline engine. Short ducts and long ducts which are communicated with each other are respectively arranged in ducts of the air intake manifold, wherein air inlets of the short ducts are respectively provided with an on-off part used for opening or closing the short ducts. Every on-off part is a rotary drum capable of doing fixed-axis rotation; each rotary drum is provided with an overflowing through hole along the direction which is vertical to the middle axle of the rotary drum; when the overflowing through holes on the rotary drums are socketconnected on the air inlets of the short ducts by the rotary drums in a support mode, the short ducts are in an on state; and when the overflowing through holes on the rotary drums are separated from the air inlets of the short ducts by the rotary drums, the short ducts are blocked to be in an off state. According to the variable air intake manifold of the gasoline engine, through switchover between the long ducts and the short ducts designed in the ducts of the air intake manifold, by combining differentiated designs of all air intake branches, air intake evenness can be ensured, and the performance of the engine is improved.
Description
Technical field
The utility model relates to a kind of intake manifold for motor, relates in particular to a kind of petrolic variable intake manifold, and the structural change of, each air flue variable by airway length is even to guarantee engine performance and air inlet.
Background technique
Petrolic working speed scope is more and more wider, and in its whole working speed scope, the required air inflow of each operating mode is different.Gas enters by intake manifold and participates in burning in the cylinder, and the air-flow that enters in the cylinder by intake manifold at present is constant, can not satisfy air inflow required under each operating mode.And, in order to guarantee the uniformity of in-cylinder combustion, motor each cylinder intake uniformity deviation under certain rotating speed must guarantee in very little scope, and each arm size of intake manifold of design is the same at present, the design proposal of assurance intake uniformity is more complicated all, and is not very clear and definite.
The model utility content
The utility model purpose is to overcome deficiency of the prior art, and a kind of petrolic variable intake manifold is provided, and the structural change of, each air flue variable by airway length is even to guarantee engine performance and air inlet.
For achieving the above object, the technical solution of the utility model is: a kind of petrolic variable intake manifold, 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 unlatching or closes the switch part of losing heart described.
Preferably, but described switch part is the cylinder of a fixed-axis rotation, on described cylinder, be provided with opening along the direction perpendicular to the cylinder axis; When rotating drum made the mistake opening on it be undertaken on the suction port of losing heart, losing heart was in opening state; When rotating drum made the mistake opening on it break away from the suction port of losing heart, losing heart was blocked, and is in closed condition.
Preferably, be provided with a plurality of air flues in the described intake manifold, be distributed in relative suction port by near to 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, be provided with 4 air flues in the described intake manifold, be distributed in relative suction port by on the nearly extremely direction far away, and be designated as successively air intake branch a, b, c, d; 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, be provided with a plurality of air flues in the described intake manifold, 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, be provided with 4 air flues in the described intake manifold, be distributed in relative suction port by on the nearly extremely direction far away, and be designated as successively air intake branch a, b, c, d; The cross sectional area of described each air intake branch is designated as respectively S1, S2, S3, S4, and it is larger 2% ~ 4% than S1 that it satisfies following relation: S2, and S3 is larger 4% ~ 7% than S1, and S4 is than S1 large 6% ~ 10%.
The beneficial effects of the utility model are, described petrolic variable intake manifold by the long air flue that designs in it and the switching of losing heart, in conjunction with the structural difference design of each air intake branch, can guarantee that air inlet is even, improves the performance of motor.
Description of drawings
Fig. 1 shows STRUCTURE DECOMPOSITION figure and the overall structure figure of petrolic variable intake manifold among the utility model one embodiment;
Fig. 2 shows the enlarged view of the major component of the intake manifold of dissecing along the axis among Fig. 1;
Fig. 3 shows the scheme of installation of cylinder in intake manifold;
Fig. 4 shows rotary drum and makes and lose heart when closing, the schematic representation of air current flow direction in the intake manifold of dissecing along the axis shown in Fig. 3;
Fig. 5 shows rotary drum and makes and lose heart when opening, the schematic representation of air current flow direction in the intake manifold of dissecing along the axis shown in Fig. 3;
Fig. 6 shows the variation tendency of each air intake branch port chamfering;
Fig. 7 is the local enlarged diagram of the A-A sectional view of Fig. 1, shows the variation tendency of the sectional area of each air intake branch;
Fig. 8 is the deviation chart that utilizes the intake uniformity of the described intake manifold of cae analysis.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.But as long as no special explanation, the size of the parts described in the embodiment, material, shape, relative position etc. are not in order to limit scope of the present utility model, and only are in order to illustrate for example.
Such as Fig. 1 to shown in Figure 5, described petrolic variable intake manifold 1, be provided with in the air flue be connected with each other logical lose heart 108 with long air flue 107, wherein, be provided with for unlatching or close 108 the switch part of losing heart in its connectivity part.
But described switch part is the cylinder 2 of a fixed-axis rotation, on described cylinder 2, be provided with opening along the direction perpendicular to the cylinder axis; Rotating drum 2 is undertaken on when losing heart 108 suction port the opening of crossing on it, loses heart 108 to be in opening state; Rotating drum 2 breaks away from when losing heart 108 suction port the opening of crossing on it, loses heart 108 to be blocked, and is in closed condition.
Particularly, as shown in Figure 1, described variable intake manifold 1 by upper slice 101, in upper slice 102, in lower sheet 103 and lower 104 consist of, wherein, in upper slice 102 provide a cavity 113 to be used for mounting rotary drum 2, in lower sheet 103 closure mounting flange and and the fixing mounting flange of cylinder cap are provided.In upper slice 102 and in lower sheet 103 consisted of vacuum chamber and the pressure stabilizing cavity of this manifold together.
In Fig. 2, along being provided with long air flue 107 in the air flue that can see clearly this intake manifold 1 in the sectional view of axis and losing heart 108.Long air flue 107 is by upper slice 101 inwalls 111, in upper slice upper inside wall 112 of 102, in upper slice lower inner wall 114 of 102, in lower sheet 103 upper inside wall 115, in the lower inner wall 116 of lower sheet 103, and the cavity that lower sheet 104 inwalls 117 form consists of.Described lose heart 108 by in upper slice cavity 113 of 102, in the cavity that forms of upper slice lower inner wall 114 of 102 and upper slice 101 inwall 111 consist of.The length of described long air flue 107 is losed heart 108 length between 270mm ~ 370mm between 530mm ~ 630mm.
To shown in Figure 5, cylinder 2 moves along direction 6 by vacuum actor 5 after being installed in the intake manifold 1 by Fig. 3, and cylinder 2 is rotated, and when the opening of crossing on it is undertaken on when losing heart 108 suction port, losing heart 108 is in opening state; Rotating drum 2 breaks away from when losing heart 108 suction port the opening of crossing on it, loses heart 108 to be blocked, and is in closed condition.Thus, under the on-off action of cylinder 2, air-flow can be along different path flow.When losing heart 108 when closing, such as Fig. 4, air-flow can not by losing heart 108, can only flow along long air flue 107; When losing heart 108 when opening, such as Fig. 5, according to fluid mechanics, gas can be along the less channel flow of resistance, so air-flow can 108 flow along losing heart.So just realized when different operating mode, realizing different air inflows according to required air inflow, improved the performance of motor.
But described intake manifold is from an end air inlet, and as shown in Figure 1, if under same condition, the air inflow of each cylinder is different certainly, does not meet designing requirement.Calculate by CAE, utilize the variation of structure to realize that each cylinder carries out inhomogeneity deviation within the specific limits, below describe the air intake structure of its intake manifold in detail.
Gas output for balanced each air flue is provided with a plurality of air flues in the described intake manifold, by nearly extremely direction 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 respectively air intake branch a, b, c, d according to the distance suction port.In Fig. 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 also is apart from the chamfering 305 of the port of suction port air intake branch d301 farthest between R5 ~ R8.
Fig. 7 is the air flue cross section enlarged diagram of Fig. 6 for another example, and by nearly extremely direction far away, the sectional area of the air intake branch that each air flue is corresponding changes from small to big successively according to the distance suction port.Particularly, the cross sectional area S1 of the air intake branch a304 nearest apart from suction port, in turn, the cross sectional area S2 of air intake branch b303, the cross sectional area S3 of air intake branch c302, the cross sectional area S4 of air intake branch d301, the section area S1 of air intake branch 304 is significantly less than cross-section area S2, S3, the S4 of other air intake branches, and cross-section area S2 is larger 2% ~ 4% than cross-section area S1, and cross-section area S3 is larger 4% ~ 7% than cross-section area S1, and cross-section area S4 is than cross-section area S1 large 6% ~ 10%.
By above structural design, can effectively reduce the gas communication resistance of other air intake branches, according to the variation of air intake branch apart from the distance of suction port, the air intake branch that distance is far away requires the circulated gases resistance less, so just can guarantee that each air intake branch intake uniformity deviation is in design object ± 2%, as shown in Figure 8.
Being the utility model preferred embodiment only in sum, is not to limit practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modification, all should belong to technology category of the present utility model.
Claims (6)
1. petrolic variable intake manifold, it is characterized in that: 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 unlatching or closes the switch part of losing heart described.
2. petrolic variable intake manifold according to claim 1 is characterized in that: but described switch part is the cylinder of a fixed-axis rotation, on described cylinder, be provided with opening along the direction perpendicular to the cylinder axis; When rotating drum made the mistake opening on it be undertaken on the suction port of losing heart, losing heart was in opening state; When rotating drum made the mistake opening on it break away from the suction port of losing heart, losing heart was blocked, and is in closed condition.
3. petrolic variable intake manifold according to claim 1 and 2, it is characterized in that: be provided with a plurality of air flues in the described intake manifold, be distributed in relative suction port by near to 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 is characterized in that: be provided with 4 air flues in the described intake manifold, be distributed in relative suction port by on the nearly extremely direction far away, and be designated as successively air intake branch a, b, c, d; 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.
5. petrolic variable intake manifold according to claim 1 and 2, it is characterized in that: be provided with a plurality of air flues in the described intake manifold, 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.
6. petrolic variable intake manifold according to claim 5 is characterized in that: be provided with 4 air flues in the described intake manifold, be distributed in relative suction port by on the nearly extremely direction far away, and be designated as successively air intake branch a, b, c, d; The cross sectional area of described each air intake branch is designated as respectively S1, S2, S3, S4, and it is larger 2% ~ 4% than S1 that it satisfies following relation: S2, and S3 is larger 4% ~ 7% than S1, and S4 is than S1 large 6% ~ 10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220422432 CN202789241U (en) | 2012-08-24 | 2012-08-24 | Variable air intake manifold of gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220422432 CN202789241U (en) | 2012-08-24 | 2012-08-24 | Variable air intake manifold of gasoline engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202789241U true CN202789241U (en) | 2013-03-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220422432 Withdrawn - After Issue CN202789241U (en) | 2012-08-24 | 2012-08-24 | Variable air intake manifold of gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202789241U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808709A (en) * | 2012-08-24 | 2012-12-05 | 安徽江淮汽车股份有限公司 | Variable air inlet manifold for gasoline engine |
| CN103742318A (en) * | 2013-12-23 | 2014-04-23 | 广西科技大学 | Engine air inlet manifold |
| CN104100423A (en) * | 2013-04-11 | 2014-10-15 | 广州汽车集团股份有限公司 | Air inlet manifold and automobile engine |
-
2012
- 2012-08-24 CN CN 201220422432 patent/CN202789241U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808709A (en) * | 2012-08-24 | 2012-12-05 | 安徽江淮汽车股份有限公司 | Variable air inlet manifold for gasoline engine |
| CN102808709B (en) * | 2012-08-24 | 2015-03-25 | 安徽江淮汽车股份有限公司 | Variable air inlet manifold for gasoline engine |
| CN104100423A (en) * | 2013-04-11 | 2014-10-15 | 广州汽车集团股份有限公司 | Air inlet manifold and automobile engine |
| CN103742318A (en) * | 2013-12-23 | 2014-04-23 | 广西科技大学 | Engine air inlet manifold |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130313 Effective date of abandoning: 20160722 |
|
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |