CN112141228A - Method for eliminating wind vibration of front window of passenger car by using intelligent spoiler - Google Patents
Method for eliminating wind vibration of front window of passenger car by using intelligent spoiler Download PDFInfo
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- CN112141228A CN112141228A CN202010959087.0A CN202010959087A CN112141228A CN 112141228 A CN112141228 A CN 112141228A CN 202010959087 A CN202010959087 A CN 202010959087A CN 112141228 A CN112141228 A CN 112141228A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D35/00—Vehicle bodies characterised by streamlining
- B62D35/008—Side spoilers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D35/00—Vehicle bodies characterised by streamlining
- B62D35/005—Front spoilers
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- 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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/82—Elements for improving aerodynamics
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
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- Fluid Mechanics (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
The invention relates to a method for eliminating wind vibration of a front window of a passenger car by using an intelligent spoiler. The method comprises the following steps: firstly, installing an intelligent turbulence strip; secondly, acquiring vehicle speed and front vehicle window opening information, and transmitting the vehicle speed and the front vehicle window opening information to an ECU (electronic control unit) controller; thirdly, performing wind tunnel test on the vehicle to obtain an intelligent spoiler height control strategy; fourthly, storing a spoiler height control strategy in the ECU, and outputting height control information of the intelligent spoiler according to a signal of the vehicle speed sensor; and fifthly, the height of the intelligent turbulence strip is controlled through the actuating mechanism, so that the intelligent height control of the intelligent turbulence strip is realized, and wind vibration is eliminated. According to the method, the intelligent spoiler strip is determined by the opening size of the car window and the car speed, the car window is completely folded when being closed, modeling is not influenced, wind resistance is reduced, when the car window is opened to a certain degree and the car speed is enough to cause wind vibration sensing, the spoiler strip is automatically lifted, and the height is adjusted along with the strength of the wind vibration, so that the aim of eliminating the wind vibration sensing under all working conditions is fulfilled.
Description
Technical Field
The invention belongs to the technical field of automobiles, and particularly relates to a method for eliminating wind vibration of a front window of a passenger car by using an intelligent spoiler.
Background
For most vehicles, when a front side window is opened during driving, wind vibration can be generated after the vehicle speed exceeds about 80km/h, according to market research and development experience data, the wind vibration strength is sensed to be strong above 115dB, complaints of users can be caused, and the peak value of the wind vibration is controlled to be below 115dB, so that the users basically cannot complain. In order to reduce the wind vibration intensity of the front vehicle window, a spoiler is additionally arranged at the front end of the vehicle window, and a regular separation vortex is generated in a boundary layer of a fluid dynamic field; the wind vibration strength can be reduced by using the turbulence strips with proper height.
However, the prior spoiler is fixed, and has the following disadvantages:
1) wind resistance is increased;
2) influence the interior quietness when the window is closed to drive;
3) because the wind vibration intensity is fixed and constant, the wind vibration intensity cannot be reduced on a large scale because the wind vibration intensity cannot be too high;
the graph of the result of reducing the wind vibration strength of the conventional spoiler strip is shown in FIG. 1.
Disclosure of Invention
The invention provides a method for eliminating wind vibration of a front window of a passenger car by using an intelligent spoiler strip, which is characterized in that the intelligent spoiler strip is determined by the opening degree of a car window and the car speed, the car window is completely folded when closed, when the car window is opened to a certain degree and the car speed is enough to cause the sensed wind vibration strength, the spoiler strip is automatically lifted, and the height is adjusted along with the wind vibration strength, so that the wind vibration sensing is eliminated under the full working condition, and the problems of the existing spoiler strip are solved.
The technical scheme of the invention is described as follows by combining the attached drawings:
a method for eliminating wind vibration of a front window by using an intelligent spoiler comprises the following steps:
firstly, installing an intelligent spoiler strip 5 at the front edge of a front window of a vehicle;
secondly, acquiring a vehicle speed or wind speed signal and the opening information of a front vehicle window, and transmitting the vehicle speed or wind speed signal and the opening information of the front vehicle window to an ECU (electronic control unit);
thirdly, performing wind tunnel test on the vehicle to obtain a height control strategy of the intelligent spoiler 5;
step four, storing the spoiler height control strategy obtained in the step three in the ECU, and outputting height control information of the intelligent spoiler 5 according to a signal of the vehicle speed sensor, namely the height information of the intelligent spoiler 5 with the sound pressure level of the outer ear of the driver lower than 115dB under various working conditions;
and fifthly, controlling the height 5 of the intelligent turbulence strip through an actuating mechanism, and realizing the intelligent height control of the intelligent turbulence strip 5 so as to eliminate wind vibration.
And acquiring the vehicle speed or wind speed signal in the second step through a speedometer.
The opening information of the front car window is collected by a car window control system.
The concrete method of the third step is as follows:
the wind tunnel test standard is to collect the sound pressure level without weight of the external ear of a driver, when the wind speed range is 50km/h-120km/h, the front window is opened and closed, other windows are opened and closed, the sound pressure level of a single frequency 13Hz to 20Hz higher than 115dB is defined as the wind vibration phenomenon, once the wind vibration phenomenon occurs, the height of the intelligent turbulence strip 5 is adjusted until the wind vibration sound pressure level is lower than 115dB, at the moment, the height of the intelligent turbulence strip 5 is the height for eliminating the wind vibration, and the height is used as the height control strategy of the intelligent turbulence strip 5.
The fourth step actuating mechanism comprises a motor 1, a speed reducer 2, a gear 3 and a rack 4; the motor 1 is connected with the speed reducer 2; the output shaft of the speed reducer 2 is connected with a gear 3; the gear 3 is meshed with the rack 4; the rack 4 is arranged on the intelligent turbulence strip 5.
The invention has the beneficial effects that:
1) the invention is an innovative assumption for creating the extremely driving experience of high-end vehicles, and all vehicle types in the current market do not have the design scheme;
2) according to the intelligent spoiler strip, the opening size of the car window and the car speed are determined, the car window is completely folded when closed, modeling is not influenced, wind resistance is reduced, when the car window is opened to a certain degree and the driving car speed is enough to cause wind vibration sensing, the spoiler strip is automatically lifted, and the height is adjusted along with the strength of the wind vibration, so that the aim of eliminating the wind vibration sensing under all working conditions is fulfilled.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a graph illustrating the result of reducing wind vibration intensity of the conventional spoiler
FIG. 2 is a schematic structural view of the present invention;
fig. 3 is a schematic structural diagram of an actuator according to the present invention.
In the figure: 1. a motor;
2. a speed reducer;
3. a gear;
4. a rack;
5. intelligent turbulence strip.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Referring to fig. 2, a method for eliminating wind vibration of a front window of a passenger car by using an intelligent spoiler comprises the following steps:
step one, installing an intelligent spoiler strip 5 at the front edge of a front window of a vehicle.
Secondly, acquiring a vehicle speed or wind speed signal and the opening information of a front vehicle window, and transmitting the vehicle speed or wind speed signal and the opening information of the front vehicle window to an ECU (electronic control unit); the height control strategy is stored in the ECU.
The speed or wind speed signal is collected by a speedometer.
The opening information of the front car window is collected by a car window control system.
And step three, carrying out wind tunnel test on the vehicle to obtain the height control strategy of the intelligent spoiler 5.
The wind tunnel test standard is to collect the sound pressure level without weight of the external ear of a driver, when the wind speed range is 50km/h-120km/h, the front window is opened and closed, other windows are opened and closed, the sound pressure level of single frequency 13Hz to 20Hz which is higher than 115dB is defined as the wind vibration phenomenon, once the wind vibration phenomenon occurs, the height of the spoiler strip is adjusted until the sound pressure level of the wind vibration is lower than 115dB, at the moment, the height of the intelligent spoiler strip 5 is the height for eliminating the wind vibration, and the height is used as the height control strategy of the intelligent spoiler strip 5.
The method comprises the following specific steps:
the vehicle model includes covered passenger vehicles, i.e., cars and SUVs.
Testing the working condition: (1) the method is the most basic, only one front window is opened, the opening degree is from small to large (for example, 5 cm is enlarged every time), when wind vibration occurs, the intelligent spoiler 5 needs to be lifted, the lifting height is based on the fact that the wind vibration disappears, and the method is an intelligent spoiler 5 height control strategy when the front window is opened.
(2) When the front window is opened and has wind vibration phenomenon, open other door windows one by one, if wind vibration phenomenon still exists then rise the vortex strip, record 5 heights of intelligent vortex strip that wind vibration disappears according to the door window aperture, this is additional height control strategy.
(3) This situation may not be considered if there is more than one other window opening than the front window, and the strategy of condition 2 may cover this multiple window opening situation. If strategic simplification is sought, condition 1 may cover condition 2, as multiple windows may only facilitate wind vibration elimination, only the lifting of the intelligent spoiler 5 may not be necessary.
Step four, storing the height control strategy of the intelligent spoiler strip 5 obtained in the step three in the ECU, and outputting height control information of the intelligent spoiler strip 5 according to a signal of the vehicle speed sensor, namely the height information of the intelligent spoiler strip 5 with the sound pressure level of the outer ear of the driver lower than 115dB under various working conditions;
and fifthly, controlling the height of the intelligent turbulence strip 5 through an actuating mechanism, and realizing the intelligent height control of the intelligent turbulence strip 5 so as to eliminate wind vibration.
Referring to fig. 3, the actuator includes a motor 1, a reducer 2, a gear 3, and a rack 4; the motor 1 is connected with the speed reducer 2; the output shaft of the speed reducer 2 is connected with a gear 3; the gear 3 is meshed with the rack 4; the rack 4 is arranged on the intelligent turbulence strip 5.
The motor 1 drives a gear 3, and the gear 3 drives a rack 4 connected with the intelligent turbulence strip to lift or lower the intelligent turbulence strip 5.
The structure of the actuating mechanism is not limited to the above structure, and the lifting of the intelligent spoiler 5 can be adjusted.
According to the intelligent spoiler strip 5, the window is completely folded when being closed, the window is opened to a certain degree and the driving speed is enough to cause the sensed wind vibration intensity, the spoiler strip is automatically lifted, and the height is adjusted along with the wind vibration intensity, so that the wind vibration sensing is eliminated under all working conditions.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A method for eliminating wind vibration of a front window of a passenger car by using an intelligent spoiler is characterized by comprising the following steps:
firstly, installing an intelligent spoiler strip (5) at the front edge of a front window of a vehicle;
secondly, acquiring a vehicle speed or wind speed signal and the opening information of a front vehicle window, and transmitting the vehicle speed or wind speed signal and the opening information of the front vehicle window to an ECU (electronic control unit);
thirdly, performing wind tunnel test on the vehicle to obtain a height control strategy of the intelligent spoiler strip (5);
step four, storing the spoiler height control strategy obtained in the step three in the ECU, and outputting height control information of the intelligent spoiler (5) according to a signal of the vehicle speed sensor, namely the height information of the intelligent spoiler (5) with the sound pressure level of the outer ear of the driver lower than 115dB under various working conditions;
and fifthly, controlling the height (5) of the intelligent turbulence strip through an actuating mechanism, and realizing the intelligent height control of the intelligent turbulence strip (5) so as to eliminate wind vibration.
2. The method for eliminating wind vibration of the front window of the passenger car by using the intelligent spoiler, as claimed in claim 1, wherein the speed or wind speed signal in the second step is collected by a speedometer.
3. The method for eliminating wind vibration of a front window of a passenger car by using the intelligent spoiler, as claimed in claim 1, wherein the information of the opening degree of the front window is collected by a window control system.
4. The method for eliminating wind vibration of the front window of the passenger car by using the intelligent spoiler, as claimed in claim 1, wherein the specific method of the third step is as follows:
the wind tunnel test standard is to collect the sound pressure level without weight of the external ear of a driver, when the wind speed range is 50km/h-120km/h, the front window is opened and closed, other windows are opened and closed, the sound pressure level of single frequency 13Hz to 20Hz which is higher than 115dB is defined as the wind vibration phenomenon, once the wind vibration phenomenon occurs, the height of the intelligent turbulence strip (5) is adjusted until the sound pressure level of the wind vibration is lower than 115dB, at the moment, the height of the intelligent turbulence strip (5) is the height for eliminating the wind vibration, and the height is used as the height control strategy of the intelligent turbulence strip (5).
5. The method for eliminating the wind vibration of the front window of the passenger car by using the intelligent spoiler, according to claim 1, wherein the step four actuating mechanism comprises a motor (1), a speed reducer (2), a gear (3) and a rack (4); the motor (1) is connected with the speed reducer (2); the output shaft of the speed reducer (2) is connected with the gear (3); the gear (3) is meshed with the rack (4); the rack (4) is arranged on the intelligent turbulence strip (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010959087.0A CN112141228A (en) | 2020-09-14 | 2020-09-14 | Method for eliminating wind vibration of front window of passenger car by using intelligent spoiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010959087.0A CN112141228A (en) | 2020-09-14 | 2020-09-14 | Method for eliminating wind vibration of front window of passenger car by using intelligent spoiler |
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| CN112141228A true CN112141228A (en) | 2020-12-29 |
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| CN202010959087.0A Pending CN112141228A (en) | 2020-09-14 | 2020-09-14 | Method for eliminating wind vibration of front window of passenger car by using intelligent spoiler |
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Citations (6)
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| CN105300511A (en) * | 2015-10-15 | 2016-02-03 | 华晨汽车集团控股有限公司 | Test structure and method of automobile skylight wind vibration noises |
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| CN105300511A (en) * | 2015-10-15 | 2016-02-03 | 华晨汽车集团控股有限公司 | Test structure and method of automobile skylight wind vibration noises |
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| CN107117214A (en) * | 2017-04-28 | 2017-09-01 | 重庆长安汽车股份有限公司 | A kind of flow-guiding structure and automobile |
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Application publication date: 20201229 |
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