CN106985766A - Self-adaptive biomimetic non-smooth surface film with pneumatic drag reduction function - Google Patents
Self-adaptive biomimetic non-smooth surface film with pneumatic drag reduction function Download PDFInfo
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- CN106985766A CN106985766A CN201710154496.1A CN201710154496A CN106985766A CN 106985766 A CN106985766 A CN 106985766A CN 201710154496 A CN201710154496 A CN 201710154496A CN 106985766 A CN106985766 A CN 106985766A
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- China
- Prior art keywords
- smooth surface
- surface unit
- unit carrier
- convex closure
- self
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/04—External Ornamental or guard strips; Ornamental inscriptive devices thereon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D17/00—Construction details of vehicle bodies
- B61D17/02—Construction details of vehicle bodies reducing air resistance by modifying contour ; Constructional features for fast vehicles sustaining sudden variations of atmospheric pressure, e.g. when crossing in tunnels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D37/00—Stabilising vehicle bodies without controlling suspension arrangements
- B62D37/02—Stabilising vehicle bodies without controlling suspension arrangements by aerodynamic means
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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
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Passenger Equipment (AREA)
- Seats For Vehicles (AREA)
Abstract
The invention discloses a kind of self-adaptive biomimetic non-smooth surface film with pneumatic drag reduction function.It includes matrix, variable height Non-smooth surface unit, Non-smooth surface unit carrier, intracavitary pressure liftable device, speed data collection device, controller.Some perforates are provided with Non-smooth surface unit carrier, there is a variable height Non-smooth surface unit Nian Jie with the sealing of Non-smooth surface unit carrier in each perforate, form convex closure, Non-smooth surface unit carrier edge is Nian Jie with matrix border sealing, closed inflating cavity is formed between the two, intracavitary pressure liftable device is used for the air pressure for adjusting inflating cavity, the pad pasting is pasted onto passenger car, commercial car or bullet train surface by the present invention, the pad pasting can adjust the height of convex closure according to real-time speed, so as to effectively reduction body drag coefficient.
Description
Technical field
The present invention relates to it is a kind of reduce product aerodynamic drag fexible film, especially for the passenger car run at high speed,
The self-adaptive biomimetic non-smooth surface film with pneumatic drag reduction function of commercial car and bullet train.
Background technology
Counted according to Traffic Administration Bureau of the Ministry of Public Security, by the end of the year 2016, national vehicle guaranteeding organic quantity is up to 2.9 hundred million, wherein automobile
1.94 hundred million.
Aerodynamic drag directly affects the power performance and the economy performance of automobile.As oil, natural gas and coal etc. can not be again
The exhaustion that is on the verge of of the energy is given birth to, continuing to increase for the recoverable amount of automobile reduces aerodynamic drag and increasingly seem important.
Related data shows that automobile speed V=60km/h, aerodynamic drag accounts for the 40% of drag overall, when V is close to 160km/
During h, drag overall is mainly caused by aerodynamic drag.If averagely reducing by 0.03 to calculate with automobile pneumatic resistance coefficient, garage
Sail fuel consumption per hundred kilometers and save 2%, it is assumed that hundred kilometers of vehicle fuel consumption rate lOL/, 10000 kilometers are averagely travelled every year, oil price is about
For 6 yuan/L, calculated according to the car ownerships 1.94 hundred million of 2016, it is annual to save over ten billion RMB.
It is highly effective means to improve fuel economy by reducing pneumatic drag coefficient.Researcher is meeting knot
On the premise of structure, riding comfort requirement, vehicle body is developed using low-resistance " bluff body " as far as possible；Focus on vehicle body each local pneumatic excellent
Change design；On the premise of automobile function requirement is met, the exposed attachment element of vehicle body, the necessary exposed attaching of vehicle body are reduced as far as possible
Part streamlining；Underbody fairing as smooth as possible, or be completely covered.Aerodynamic drag system is reduced from shape-designing
Several research is highly developed, it is difficult to make a breakthrough.
The deep proof of bionic non-smooth surface Research of Drag Reduction is pneumatic to reduce by pasting Non-smooth surface film in bodywork surface
The method of resistance coefficient has feasibility.
The content of the invention
The purpose of the present invention is to overcome the deficiencies in the prior art there is provided a kind of self-adaptive biomimetic with pneumatic drag reduction function
Non-smooth surface film.
What the purpose of the present invention was achieved through the following technical solutions：
A kind of self-adaptive biomimetic non-smooth surface film with pneumatic drag reduction function, including matrix, some variable heights
Opened on Non-smooth surface unit, Non-smooth surface unit carrier, intracavitary pressure liftable device, speed data collection device, controller, Non-smooth surface unit carrier
Having in some perforates, each perforate has a variable height Non-smooth surface unit Nian Jie with the sealing of Non-smooth surface unit carrier, is formed
Convex closure, Non-smooth surface unit carrier edge is Nian Jie with matrix border sealing, and closed inflating cavity, intracavitary air pressure liter are formed between the two
Drop device is used for the air pressure for adjusting inflating cavity, and speed data collection device and controller integrated installation are on pad pasting, described variable height
Non-smooth surface unit is less than 100MPa material using modulus of elasticity, and such as rubber, PVC0.007 are plastified, Non-smooth surface unit carrier and base
Body is higher than 1GPa material, such as polyethylene from high pressure process, polypropylene using modulus of elasticity.
In above-mentioned technical proposal, the perforate on described Non-smooth surface unit carrier is in regularly arranged.
The height H of described variable height Non-smooth surface unit convex closure can be to change in 0.2-10mm in scope.
The operation principle of the pad pasting is as follows：
Speed data collection device collection vehicle current vehicle speed is simultaneously transmitted to controller, by controller handle after decide whether to inflation
Cavity inflation/deflation, so as to adjust the height of Non-smooth surface unit convex closure.
For the convex closure of different materials, gas in convex closure height H and inflating cavity can be obtained by way of testing in advance
The corresponding relation data of pressure, and store that data in controller, convex closure height H foundation is controlled as controller.
Further, the height of variable height Non-smooth surface unit can change with the change of speed.The non-light of variable height
The height of sliding unit convex closure can specifically be calculated by below equation:
Wherein, V is the real-time speed of automobile, VyFor speed threshold value set in advance, 80km/h, H are such as taken1To preset
Convex closure height initial value, it is the constant for eliminating speed unit to take 4-6mm, K, and it is car generally to take 60-80km/h, H
The height of convex closure when speed is V.
The beneficial effects of the invention are as follows:The present invention is sticked on passenger car, commercial car or bullet train surface has pneumatic subtract
The self-adaptive biomimetic non-smooth surface film of resistance function can effectively reduce body drag coefficient.
Brief description of the drawings
Fig. 1 is the schematic diagram of convex closure height dimension and film structure in the present invention.
Fig. 2 is the structural representation of convex closure.
Fig. 3 is the control principle drawing of variable convex closure height.
Embodiment
The invention will now be described in detail with reference to the accompanying drawings, and the purpose of the present invention and effect will be apparent.
The present invention has the self-adaptive biomimetic non-smooth surface film of pneumatic drag reduction function, and it includes matrix, variable-volume
Non-smooth surface unit, Non-smooth surface unit carrier, inflating cavity, intracavitary pressure liftable device, GES receiver, controller.Structure
As shown in figure 1, variable height Non-smooth surface unit 2 uses the less nonmetallic materials of rigidity, it can be especially less than using modulus of elasticity
100MPa material, such as rubber, PVC0.007 plasticizings, Non-smooth surface unit carrier 3 and matrix 1 are then using larger nonmetallic of rigidity
Material, can especially be higher than 1GPa material, such as polyethylene from high pressure process, polypropylene, the sealing bonding of Non-smooth surface unit 2 using modulus of elasticity
In each perforate of Non-smooth surface unit carrier 3, formed convex closure, Non-smooth surface unit carrier 3 it is Nian Jie with the edge seal of matrix 1 both
Between formed inflating cavity 4.
The height of variable height Non-smooth surface unit can change with the change of air pressure size in inflating cavity.Such as Fig. 1 institutes
Show, the height H of the convex closure is relevant with the size of air pressure in inflating cavity, and the excursion of its height is 0.2mm-10mm.
Driver can pre-set speed threshold value V before car engine according to driving conditionsy, and beforehand through intracavitary air pressure liter
Drop device adjusts the size of air pressure in inflating cavity to control the elemental height H of convex closure1.As shown in Fig. 2 the convex closure formed is preferably in
Regularly arranged, preferred parameter is as follows：Positioned at the convex closure centre-to-centre spacing L of same row1=3mm-8mm, positioned at the convex closure center of same row
Away from L2=2mm-7mm.
The height of variable height Non-smooth surface unit can change with the change of speed.The height H of the convex closure will be with
The change of speed and change, just started from automobile to automobile speed be less than vehicle velocity VyBefore, H=H1Keep constant.When driving conditions are prominent
So change, vehicle velocity V has obvious when rising and being stable at a certain vehicle speed intervals (such as 95-100km/h), intracavitary pressure liftable
Device will adjust reduction inflating cavity in air pressure come control reduce convex closure height H；Hereafter, if vehicle velocity V significantly decreases
And when being stable at a certain vehicle speed intervals (such as 85-90km/h), intracavitary pressure liftable device will adjust air pressure in rise inflating cavity
To control the height H for increasing convex closure.
The control principle drawing of variable convex closure volume is illustrated in figure 3, when automobile is just started, system is initialized, driven
The vehicle velocity V that member passes through anticipation normally travelyTo set convex closure height initial value H1；GES collector carries out real-time to speed
Gather and communicate information to controller, as vehicle velocity V≤VyWhen, convex closure highly keeps H1It is constant；When vehicle velocity V has on obvious
Rise and be stable at a certain vehicle speed intervals (Vy≤ V≤120km/h) when, it is empty that pressure liftable device in driving chamber is reduced inflation by controller
Air pressure in chamber reduces the height H of convex closure to adjust；Hereafter, when vehicle velocity V significantly decreases and is stable at a certain vehicle speed intervals
When, pressure liftable device in driving chamber is increased the air pressure in inflating cavity to adjust the height H of increase convex closure by controller, makes automobile
Aerodynamic drag under the speed in minimum.
Claims (3)
1. a kind of self-adaptive biomimetic non-smooth surface film with pneumatic drag reduction function, it is characterised in that including matrix (1),
Some variable height Non-smooth surface units (2), Non-smooth surface unit carrier (3), intracavitary pressure liftable device, speed data collection device, controller,
Being provided with Non-smooth surface unit carrier (3) in some perforates, each perforate has a variable height Non-smooth surface unit (2) and non-light
Sliding unit carrier (3) sealing bonding, forms convex closure, Non-smooth surface unit carrier (3) edge is Nian Jie with matrix (1) edge seal, and two
Closed inflating cavity (4) is formed between person, intracavitary pressure liftable device is used for the air pressure for adjusting inflating cavity (4), speed data collection device
With controller integrated installation on pad pasting, described variable height Non-smooth surface unit (2) is less than 100MPa's using modulus of elasticity
Material, Non-smooth surface unit carrier (3) and matrix (1) are higher than 1GPa material using modulus of elasticity.
2. the self-adaptive biomimetic non-smooth surface film according to claim 1 with pneumatic drag reduction function, its feature exists
In the perforate on described Non-smooth surface unit carrier (3) is in regularly arranged.
3. the self-adaptive biomimetic non-smooth surface film according to claim 1 with pneumatic drag reduction function, its feature exists
In the height H excursions of described variable height Non-smooth surface unit (2) convex closure are 0.2-10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710154496.1A CN106985766B (en) | 2017-03-15 | 2017-03-15 | Self-adaptive biomimetic non-smooth surface film with pneumatic drag reduction function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710154496.1A CN106985766B (en) | 2017-03-15 | 2017-03-15 | Self-adaptive biomimetic non-smooth surface film with pneumatic drag reduction function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106985766A true CN106985766A (en) | 2017-07-28 |
| CN106985766B CN106985766B (en) | 2019-07-09 |
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ID=59413065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710154496.1A Expired - Fee Related CN106985766B (en) | 2017-03-15 | 2017-03-15 | Self-adaptive biomimetic non-smooth surface film with pneumatic drag reduction function |
Country Status (1)
| Country | Link |
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| CN (1) | CN106985766B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108454780A (en) * | 2018-04-24 | 2018-08-28 | 江苏科技大学 | A kind of adjustable damping device of surface parameter of imitative biological epidermis |
| CN113665607A (en) * | 2021-09-01 | 2021-11-19 | 中国海洋大学 | Bionic outer surface structure for reducing air resistance and noise in high-speed train |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19532998A1 (en) * | 1995-09-07 | 1997-03-13 | Daimler Benz Ag | Film for applying smooth surfaces to motor vehicle |
| WO2015141656A1 (en) * | 2014-03-19 | 2015-09-24 | 大日本印刷株式会社 | Decorative sheet, and decorative member in which same is used |
| CN105584542A (en) * | 2015-12-31 | 2016-05-18 | 浙江大学 | Coupling bionic non-smooth flexible surface pasted film with pneumatic drag reducing effect |
-
2017
- 2017-03-15 CN CN201710154496.1A patent/CN106985766B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19532998A1 (en) * | 1995-09-07 | 1997-03-13 | Daimler Benz Ag | Film for applying smooth surfaces to motor vehicle |
| WO2015141656A1 (en) * | 2014-03-19 | 2015-09-24 | 大日本印刷株式会社 | Decorative sheet, and decorative member in which same is used |
| CN105584542A (en) * | 2015-12-31 | 2016-05-18 | 浙江大学 | Coupling bionic non-smooth flexible surface pasted film with pneumatic drag reducing effect |
Non-Patent Citations (1)
| Title |
|---|
| 赵军: "凹坑形仿生非光滑表面的减阻性能研究", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108454780A (en) * | 2018-04-24 | 2018-08-28 | 江苏科技大学 | A kind of adjustable damping device of surface parameter of imitative biological epidermis |
| CN108454780B (en) * | 2018-04-24 | 2019-09-27 | 江苏科技大学 | A kind of adjustable damping device of surface parameter of imitative biological epidermis |
| CN113665607A (en) * | 2021-09-01 | 2021-11-19 | 中国海洋大学 | Bionic outer surface structure for reducing air resistance and noise in high-speed train |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106985766B (en) | 2019-07-09 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190709 |