CN202203005U - Double-helix air intake port - Google Patents
Double-helix air intake port Download PDFInfo
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- CN202203005U CN202203005U CN2011202657895U CN201120265789U CN202203005U CN 202203005 U CN202203005 U CN 202203005U CN 2011202657895 U CN2011202657895 U CN 2011202657895U CN 201120265789 U CN201120265789 U CN 201120265789U CN 202203005 U CN202203005 U CN 202203005U
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- Prior art keywords
- inlet duct
- spiral inlet
- helix
- intake port
- spiral
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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
Abstract
The utility model provides a double-helix air intake port, belongs to the technical field of automobiles, and is used for solving the problems of the great mutual inteference of the existing double-helix air intake ports and relatively less whole swirl ratio in an air cylinder. The double-helix air intake port comprises a first helix air intake port and a second helix air intake port arranged at one side of the first helix air intake port; one end of the first helix air intake port and one end of the second helix air intake port are respectively connected to the air cylinder; the first helix air intake port and the second helix air intake port are asymmetrical; the first helical angle of the first helix air intake port is less than the second helical angle of the second helix air intake port; the air flow speed of the air flowing out from the first helix air intake port is in central asymmetrical distribution; and the air flow speed of the air flowing out from the second helix air intake port is in central symmetrical distribution. Through the double-helix air intake port provided by the utility model, not only is the inteference effect between the first helix air intake port and the second helix air intake port reduced, but also the whole swirl ratio in the air cylinder is improved.
Description
Technical field
The utility model belongs to automobile technical field, relates to a kind of intake duct of motor car engine, particularly relates to a kind of double helix intake duct.
Background technique
Motor is the heart of automobile, and for the walking of automobile provides power, wherein exhaust index has become and estimates the good and bad important indicator of all kinds of engine performance.Exhaust index mainly is meant the gas of discharging from engine oil tank, crankcase and the amount of contained noxious emission from the waste gas that cylinder is discharged.The environment that it is related to human beings'health and depends on for existence.Therefore, national governments all make strict control rules, in the hope of cutting down the pollution of engine exhaust to environment.
Along with various countries' Abgasgesetz is more and more harsher, because increasingly high to the overall performance requirement of motor, the air inlet situation of motor directly has influence on its Economy and power character and emission performance, thereby the shaped design of intake duct is most important concerning motor.At present, the form that realizes the intake duct of eddy current in the cylinder of diesel engine is divided into two kinds of tangential air flue and helical intakes.Compare with tangential air flue, helical intake can form stronger intake swirl, therefore in diesel engine, uses more extensive.In order to increase air inflow, adopted the double helix intake duct now mostly, but because traditional double helix intake duct all adopts the large helix angle air flue, phase mutual interference between the approaching two eddy current of the intensity that makes both produce.Thereby compare with the single-screw air flue, the strength of vortex of double helix intake duct is relatively low, makes fuel economy poor, and discharging is high, is difficult to satisfy the present stage emission request, therefore must improve.
Summary of the invention
The purpose of the utility model is to have the problems referred to above to existing technology, and a kind of double helix intake duct is provided, and uses said double helix intake duct not only to reduce interference effect but also the interior whole swirl rate of raising cylinder between two eddy current.
The purpose of the utility model can realize through following technical proposal: a kind of double helix intake duct; Comprise that one first spiral inlet duct and is located at second spiral inlet duct of said first spiral inlet duct, one side; One end of said first spiral inlet duct and an end of second spiral inlet duct are connected to respectively on the cylinder; Said first spiral inlet duct and second spiral inlet duct are non-symmetry structure; First helix angle of said first spiral inlet duct is less than second helix angle of second spiral inlet duct; Airspeed through the said first spiral inlet duct effluent stream is the center asymmetric distribution, through the distribution that is centrosymmetric of the airspeed of the said second spiral inlet duct effluent stream.
This double helix intake duct is provided with first spiral inlet duct and second spiral inlet duct of non-symmetry structure; Be the center asymmetric distribution through the airspeed of the first spiral inlet duct effluent stream, through the distribution that is centrosymmetric of the airspeed of the said second spiral inlet duct effluent stream; The strength of vortex of said first spiral inlet duct and second spiral inlet duct there are differences, thereby has reduced the interference effect between two eddy current greatly, and then has improved swirl rate whole in the cylinder.
In above-mentioned a kind of double helix intake duct; Spiral starting point and the line between the spiral center of setting first spiral inlet duct are first line; Spiral center and the line between the cylinder axis of setting first spiral inlet duct are second line; Said first line be rotated counterclockwise to the angle of second line be 200 °～300 °; Setting the spiral starting point of second spiral inlet duct and the line between the spiral center is the 3rd line, and spiral center and the line between the cylinder axis of setting second spiral inlet duct are the 4th line, said the 3rd line be rotated counterclockwise to the angle of the 4th line be 160 °～200 °.
Said first line be rotated counterclockwise to the angle of second line be 200 °～300 °, said the 3rd line be rotated counterclockwise to the angle of the 4th line be 160 °～200 °; The strength of vortex of said first spiral inlet duct is less than the strength of vortex of second spiral inlet duct, thereby reduced the interference effect of first spiral inlet duct to second spiral inlet duct.
In above-mentioned double helix intake duct, first helix angle of said first spiral inlet duct is 190 °～210 °, and second helix angle of said second spiral inlet duct is 290 °～310 °.
First helix angle of said first spiral inlet duct is 190 °～210 °; Thereby the airspeed of the warp first spiral inlet duct effluent stream is the center asymmetric distribution; Second helix angle of said second spiral inlet duct is 290 °～310 °, thereby through the distribution that is centrosymmetric of the airspeed of the said second spiral inlet duct effluent stream.
In above-mentioned double helix intake duct; Said first spiral inlet duct has one first helical pipe, and first straight pipeline that extended to form by an end of first helical pipe, and said second spiral inlet duct has one second helical pipe, and second straight pipeline that extended to form by an end of second helical pipe; The other end of the other end of said first helical pipe and second helical pipe is connected to respectively on the said cylinder.
Said gas respectively successively via first straight pipeline and first helical pipe, with second straight pipeline and second helical pipe after get into the synthetic strong eddy current of cylinder.
In above-mentioned double helix intake duct, said first spiral inlet duct and second spiral inlet duct are parallel to each other.
Compared with prior art; First spiral inlet duct and second spiral inlet duct of the utility model double helix intake duct through being provided with non-symmetry structure; And first helix angle is less than second helix angle; Thereby in the interference effect that has reduced between first spiral inlet duct and second spiral inlet duct, increased air inflow again, improved swirl rate whole in the cylinder.
Description of drawings
Fig. 1 is the schematic representation that the utility model double helix intake duct cooperates with cylinder.
Among the figure, 10, first spiral inlet duct; 11, first helical pipe; 12, first straight pipeline; B1, first helix angle; 20, second spiral inlet duct; 21, second helical pipe; 22, second straight pipeline; B2, second helix angle; 30, cylinder.
Embodiment
Below be the specific embodiment of the utility model and combine accompanying drawing, the technological scheme of the utility model is done further to describe, but the utility model is not limited to these embodiments.
See also Fig. 1, the utility model double helix intake duct comprises that one first spiral inlet duct 10 and is located at second spiral inlet duct 20 of said first spiral inlet duct, 10 1 sides.One end of one end of said first spiral inlet duct 10 and second spiral inlet duct 20 is connected to respectively on the cylinder 30 of a motor.In the present embodiment, said first spiral inlet duct 10 and second spiral inlet duct 20 are parallel to each other, thus compact structure but also can obtain structural rigidity preferably not only.
Please continue to consult Fig. 1, said first spiral inlet duct 10 and second spiral inlet duct 20 are non-symmetry structure.Said first spiral inlet duct 10 has one first helical pipe 11, and first straight pipeline 12 that extends to form of an end by first helical pipe 11.Said second spiral inlet duct 20 has one second helical pipe 21, and second straight pipeline 22 that extends to form of an end by second helical pipe 21.The other end of the other end of said first helical pipe 11 and second helical pipe 21 is connected to respectively on the said cylinder 30.Spiral starting point and the line between the spiral center of setting first spiral inlet duct 10 are first line.Setting the spiral center of first spiral inlet duct 10 and the line between cylinder 30 centers is second line.Set said first line be rotated counterclockwise to the angle of second line be A1.Spiral starting point and the line between the spiral center of setting second spiral inlet duct 20 are the 3rd line.Setting the spiral center of second spiral inlet duct 20 and the line between cylinder 30 centers is the 4th line.Set said the 3rd line be rotated counterclockwise to the angle of the 4th line be A2.Helix termination end and the line between the spiral center of setting first spiral inlet duct 10 are the 5th line; The helix termination end and the line between the spiral center of second spiral inlet duct 20 are the 6th line.The helix angle of setting first spiral inlet duct 10 is the first helix angle B1, and the helix angle of setting second spiral inlet duct 20 is the second helix angle B2.The said first helix angle B1 is meant the angle that goes to the 5th line with the first line dextrorotation.The said second helix angle B2 is meant the angle that goes to the 6th line with the 3rd line dextrorotation.
Please continue to consult Fig. 1, experiment shows, and is remarkable to the interference that another spiral inlet duct produces when angle A 1 or A2 are 200 °～300 °, causes that whole swirl rate declines to a great extent in the cylinder 30.Because spatial arrangement is difficult to angle A 1 and A2 are all avoided 200 °～300 ° zones.Therefore in the present embodiment, it is 200 °～300 ° that A1 is set, and it is 160 °～200 ° that A2 is set.And the second helix angle B2 of the first helix angle B1 of said first spiral inlet duct 10 less than second spiral inlet duct 20 is set.Feasible airspeed through said first spiral inlet duct, 10 effluent streams is the center asymmetric distribution; And through the distribution that is centrosymmetric of the airspeed of said second spiral inlet duct, 20 effluent streams.In the present embodiment, the first helix angle B1 of said first spiral inlet duct 10 is 190 °～210 °, and the second helix angle B2 of said second spiral inlet duct 20 is 290 °～310 °.Strength of vortex through said first spiral inlet duct 10 and second spiral inlet duct 20 there are differences, thereby has reduced the interference effect between two eddy current greatly, and then has improved whole swirl rate in the cylinder 30.
Please continue to consult Fig. 1, said double helix intake duct is provided with first spiral inlet duct 10 and second spiral inlet duct 20 of asymmetric setting.In engine working process, said gas is via in first straight pipeline, 12 to first helical pipes 11, is the center asymmetric distribution via the airspeed of first helical pipe, 11 effluent streams.Said gas is via in second straight pipeline, 22 to second helical pipes 21, via the distribution that is centrosymmetric of the airspeed of second helical pipe, 21 effluent streams.The air-flow that flows out via first spiral inlet duct 10 and second spiral inlet duct 20 gets into the synthetic strong eddy current of cylinder.The first helix angle B1 of said first spiral inlet duct 10 is less than the second helix angle B2 of second spiral inlet duct 20.So the strength of vortex of said first spiral inlet duct 10 is less than the strength of vortex of second spiral inlet duct 20; Thereby in the interference effect that has reduced 10 pairs second spiral inlet ducts 20 of first spiral inlet duct, increased air inflow again, improved whole swirl rate in the cylinder 30; And then it is more even that fuel oil and gas are mixed, and it is more abundant to burn, and has effectively improved fuel economy, has reduced discharge of harmful gases.
In sum; First spiral inlet duct 10 and second spiral inlet duct 20 of the utility model double helix intake duct through being provided with non-symmetry structure; And the first helix angle B1 of said first spiral inlet duct 10 is less than the second helix angle B2 of second spiral inlet duct 20; Thereby in the interference effect that has reduced between first spiral inlet duct 10 and second spiral inlet duct 20, increased air inflow again, improved whole swirl rate in the cylinder 30.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from the spirit of the utility model or surmount the defined scope of appended claims.
Claims (5)
1. double helix intake duct; Comprise that one first spiral inlet duct (10) and is located at second spiral inlet duct (20) of said first spiral inlet duct (10) one sides; One end of one end of said first spiral inlet duct (10) and second spiral inlet duct (20) is connected to respectively on the cylinder (30); It is characterized in that: said first spiral inlet duct (10) is a non-symmetry structure with second spiral inlet duct (20); First helix angle (B1) of said first spiral inlet duct (10) is less than second helix angle (B2) of second spiral inlet duct (20); Airspeed through said first spiral inlet duct (10) effluent stream is the center asymmetric distribution, through the distribution that is centrosymmetric of the airspeed of said second spiral inlet duct (20) effluent stream.
2. double helix intake duct according to claim 1; It is characterized in that; Spiral starting point and the line between the spiral center of setting first spiral inlet duct (10) are first line; Setting the spiral center of first spiral inlet duct (10) and the line between cylinder (30) center is second line, said first line be rotated counterclockwise to the angle (A1) of second line be 200 °～300 °; Spiral starting point and the line between the spiral center of setting second spiral inlet duct (20) are the 3rd line; Setting the spiral center of second spiral inlet duct (20) and the line between cylinder (30) center is the 4th line, said the 3rd line be rotated counterclockwise to the angle (A2) of the 4th line be 160 °～200 °.
3. double helix intake duct according to claim 1 and 2 is characterized in that, first helix angle (B1) of said first spiral inlet duct (10) is 190 °～210 °, and second helix angle (B2) of said second spiral inlet duct (20) is 290 °～310 °.
4. double helix intake duct according to claim 3; It is characterized in that; Said first spiral inlet duct (10) has one first helical pipe (11), and first straight pipeline (12) that extended to form by an end of first helical pipe (11), and said second spiral inlet duct (20) has one second helical pipe (21), and second straight pipeline (22) that extended to form by an end of second helical pipe (21); The other end of the other end of said first helical pipe (11) and second helical pipe (21) is connected to respectively on the said cylinder (30).
5. double helix intake duct according to claim 4 is characterized in that, said first spiral inlet duct (10) and second spiral inlet duct (20) are parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202657895U CN202203005U (en) | 2011-07-26 | 2011-07-26 | Double-helix air intake port |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202657895U CN202203005U (en) | 2011-07-26 | 2011-07-26 | Double-helix air intake port |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202203005U true CN202203005U (en) | 2012-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202657895U Expired - Fee Related CN202203005U (en) | 2011-07-26 | 2011-07-26 | Double-helix air intake port |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202203005U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192139A (en) * | 2013-03-18 | 2013-07-10 | 中国兵器工业集团第七0研究所 | Special cutter |
| CN104632479A (en) * | 2014-12-30 | 2015-05-20 | 大连理工大学 | Inlet channel structure of engine |
| CN105569869A (en) * | 2015-12-25 | 2016-05-11 | 潍柴动力扬州柴油机有限责任公司 | Four-valve cylinder cover for lightweight engine |
| CN107035579A (en) * | 2017-04-14 | 2017-08-11 | 无锡开普机械有限公司 | Oil to gas gas engine inlet structure |
-
2011
- 2011-07-26 CN CN2011202657895U patent/CN202203005U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192139A (en) * | 2013-03-18 | 2013-07-10 | 中国兵器工业集团第七0研究所 | Special cutter |
| CN104632479A (en) * | 2014-12-30 | 2015-05-20 | 大连理工大学 | Inlet channel structure of engine |
| CN105569869A (en) * | 2015-12-25 | 2016-05-11 | 潍柴动力扬州柴油机有限责任公司 | Four-valve cylinder cover for lightweight engine |
| CN107035579A (en) * | 2017-04-14 | 2017-08-11 | 无锡开普机械有限公司 | Oil to gas gas engine inlet structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20190726 |