Automobile air resistance reducing film

Abstract

This invention provides an automotive air resistance reduction membrane. The membrane has a smooth outer surface and is installed on the surface of the vehicle at the source of air resistance, forming an aerodynamically smooth surface to reduce air resistance. The membrane can be selectively installed on the front grille and / or wheel hub. When installed on the front grille, it reduces the air intake area and lowers air resistance; when installed on the wheel hub, it covers the gaps and uneven structures of the wheel hub to smooth airflow, reduce turbulent airflow, and lower air resistance. The membrane can be fixed by an adhesive layer on the inner surface and / or by one or more of the following auxiliary fixing devices: hooks, clips, Velcro, straps, etc. The shape of the membrane is adapted to its installation location and can be integral or composed of several parts. Ventilation holes for heat dissipation can be provided on the membrane. When installed on the wheel hub, the membrane can have screw holes to meet the needs of wheel hub installation and removal; it can also have inflation nozzle holes for tire inflation and deflation. Printed patterns can be provided on the outer surface of the membrane to enhance its aesthetics. This invention features a simple structure, low cost, convenient installation, strong aesthetics, strong adaptability, significant reduction in air resistance, and additional effects such as heat insulation, heat insulation, and insect and dust blocking.

Description

Technical Field

[0001] This invention relates to the field of automotive energy-saving technology, specifically to a membrane for reducing automotive air resistance. Background Technology

[0002] The driving range of automobiles, especially new energy vehicles, is one of the important factors affecting their practicality, and air resistance during driving is one of the significant factors influencing their driving range. Existing technologies typically reduce air resistance by fixing an adjustable grille to the front of the vehicle or adding wheel covers. For example, Chinese invention patent CN118322838A discloses "an external active air intake grille structure for automobiles," which can control the air intake volume and affect wind resistance by adjusting the size of the air intake; Chinese utility model patent CN218616066U discloses "a wind resistance-reducing automobile wheel cover," which reduces driving wind resistance by installing a specially designed blade-shaped cover on the outside of the automobile wheel hub. However, the above methods of reducing vehicle wind resistance have the following drawbacks:

[0003] First, the material costs are high, requiring the use of specialized materials such as special metals or engineering plastics, and the production process is complex. Second, the installation is difficult, requiring significant modifications to the vehicle, and it cannot be flexibly disassembled and reassembled. Third, some devices affect the overall appearance and aesthetics of the vehicle; the devices are affected by the shape of the vehicle itself, making it difficult to fully adapt to different models. Fourth, existing solutions cannot create a sufficiently smooth aerodynamic surface on the vehicle's own structure, or can not fully seal the gaps and uneven structures of the body structure, thus limiting the effect of reducing air resistance. Summary of the Invention

[0004] To overcome the technical problems of high cost, complex installation, significant impact on aesthetics, and poor adaptability of existing technologies, this invention provides an automotive air resistance reduction film, which features low material cost, convenient installation, strong adaptability, and effective reduction of air resistance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An automotive air resistance reducing membrane has a smooth outer surface that covers and is installed on the surface of the vehicle at sources of air resistance, forming an aerodynamically smooth surface to reduce air resistance. Specifically:

[0007] The membrane can be selectively applied to the front grille and / or wheel hubs of a vehicle. When applied to the front grille, it reduces the air intake area and lowers air resistance; when applied to the wheel hub, it covers the gaps and uneven structures of the wheel hub to smooth airflow, reduce turbulent airflow, and lower air resistance.

[0008] The membrane can be fixed by means of an adhesive layer on the inner surface and / or by one or more of the following auxiliary fixing devices: hooks, buckles, Velcro, straps, etc.

[0009] The membrane is shaped to fit its installation location and can be a single piece or composed of several parts. Ventilation holes for heat dissipation may be provided on the membrane. When installed at a wheel hub, the membrane may have screw holes to facilitate wheel hub installation and removal; it may also have an inflation nozzle for tire inflation and deflation.

[0010] The film can be printed with patterns to enhance its aesthetics.

[0011] The present invention has the following beneficial effects:

[0012] 1. Simple structure, simple production process, low material cost and easy to obtain;

[0013] 2. Easy to install, can be flexibly disassembled and assembled as needed, without requiring structural modifications to the vehicle;

[0014] 3. It has little impact on the vehicle's appearance and can be beautified through printed patterns;

[0015] 4. Highly adaptable; can be customized for different car models and is suitable for all types of vehicles.

[0016] 5. Significantly reduces wind resistance, effectively improves vehicle aerodynamic performance, extends vehicle range, and saves energy consumption;

[0017] 6. Due to the material properties of the present invention, it also has certain additional effects, including heat insulation, insect and dust blocking, etc. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of a car front grille air resistance reduction film fixed with an adhesive layer, where: 1 is the upper component and 2 is the lower component;

[0020] Figure 2 This is a graph showing experimental data for an air resistance reduction film for a car front grille that is fixed with an adhesive layer.

[0021] Figure 3 This is a schematic diagram of a car front grille air resistance reduction membrane fixed with hooks, where: 3 is the membrane body, 4 is the hook structure, and 5 is the ventilation hole;

[0022] Figure 4 This is a schematic diagram of a membrane for reducing air resistance in a car wheel hub, which is fixed with an adhesive layer. In the diagram: 6 is the membrane body, 7 is the screw hole, 8 is the heat dissipation hole, and 9 is the air inlet hole.

[0023] Figure 5 This is a graph showing experimental data for an air resistance reduction membrane for automobile wheel hubs that is fixed with an adhesive layer.

[0024] Figure 6 This is a schematic diagram of a membrane for reducing air resistance in a car wheel hub, which is fixed with Velcro. In the diagram: 10 is the male side Velcro, 11 is the female side Velcro, and 12 is the membrane body.

[0025] Figure 7 This is a schematic diagram of the combined application structure of the air resistance reduction film for the front grille and wheel hub of an automobile, where: 13 is the air resistance reduction film for the front grille and 14 is the air resistance reduction film for the wheel hub.

[0026] Figure 8 Experimental data graphs showing the combined application of aerodynamic drag reduction films for automotive front grilles and wheel hubs. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. After reading this invention, any modifications of the invention in various equivalent forms by those skilled in the art fall within the scope defined by the appended claims.

[0028] Example 1: Air resistance reduction film for automotive front grille fixed with an adhesive layer

[0029] like Figure 1 As shown, this embodiment provides an automotive air resistance reducing film, which is installed over the front grille of a vehicle. The film has a smooth outer surface, forming an aerodynamically smooth surface after installation to reduce air resistance.

[0030] Specifically, the membrane is made of TPU material and has a thickness of 0.2 mm. The membrane includes an adhesive layer on its inner surface, made of pressure-sensitive adhesive, for fixing the membrane to the front grille of the vehicle. The membrane is made of transparent material and does not affect the visibility of the vehicle license plate.

[0031] The membrane is adapted to the shape of the front grille and is pre-customized according to the front grille design of different vehicle models. In this embodiment, the membrane is composed of an upper component 1 and a lower component 2. The upper component covers the upper part of the grille, and the lower component covers the lower part of the grille, which facilitates installation and maintenance.

[0032] To meet the engine's heat dissipation requirements, the membrane is provided with ventilation holes for heat dissipation. For example... Figure 1 As shown, the ventilation holes adopt a strip design, which can ensure the normal heat dissipation needs of the engine compartment while minimizing intake resistance.

[0033] like Figure 2As shown, a test was conducted on a pure electric SUV model. Test conditions were as follows: ambient temperature: 0℃ to 1℃; vehicle speed: 110 km / h cruise control; test route: fixed highway section; test time: nighttime (to minimize interference from other vehicles); starting point: battery capacity 83%; test results:

[0034] (1) Control group (without membrane):

[0035] Power consumption: 83%-77%

[0036] Mileage: 9.9 kilometers

[0037] Data fitting curve: y = 1.65x - 1.6714 (y is the driving distance, x is the remaining battery power)

[0038] Goodness of fit: R² = 0.9994

[0039] (2) Experimental group (with membrane installed):

[0040] Power consumption: 83%-77%

[0041] Mileage: 10.9 kilometers

[0042] Data fitting curve: y = 1.8143x - 1.7429 (y is the driving distance, x is the remaining battery power)

[0043] Goodness of fit: R² = 0.9998

[0044] Test results show that after installing the air resistance reduction membrane of this embodiment, the vehicle's driving range is increased by approximately 10.0%.

[0045] Example 2: Air resistance reduction film for automotive front grille fixed with hooks

[0046] like Figure 3 As shown, this embodiment provides an automotive air resistance reducing film, which is installed over the front grille of a vehicle. The film has a smooth outer surface, forming an aerodynamically smooth surface after installation to reduce air resistance.

[0047] Specifically, the membrane is made of PVC material and has a thickness of 0.2 mm. The membrane includes a membrane body 3, which has a rectangular design. The membrane is made of transparent material and does not affect the visibility of the vehicle license plate.

[0048] The membrane is fixed using a hook mechanism. For example... Figure 3 As shown, hook structures 4 are provided at the four corners of the membrane 3. These structures include straps and hooks made of metal or plastic, used to securely connect to the car body, allowing the membrane 3 to firmly cover the front grille of the car. This fixing method facilitates installation and removal.

[0049] The membrane is shaped to fit the front grille. To meet the engine's heat dissipation requirements, the membrane is provided with ventilation holes for heat dissipation. Figure 3 As shown, the ventilation hole 5 adopts a square design, which can ensure the normal heat dissipation needs of the engine compartment and minimize the intake resistance.

[0050] This embodiment has the same effect as Embodiment 1 in reducing air resistance. Compared with the adhesive layer fixing method in Embodiment 1, this embodiment uses a hook fixing structure, which has the advantages of more convenient installation and disassembly, and better reusability.

[0051] Example 3: Air resistance reduction membrane for automobile wheel hubs fixed with an adhesive layer

[0052] like Figure 4 As shown, this embodiment provides an automotive air resistance reduction membrane, which is installed over the wheel hub of a vehicle. The membrane has a smooth outer surface, forming an aerodynamically smooth surface after installation to reduce air resistance.

[0053] Specifically, the membrane is made of TPU material and has a thickness of 0.2 mm. The membrane includes an adhesive layer on its inner surface, made of pressure-sensitive adhesive material, for fixing the membrane to the car wheel hub.

[0054] The membrane is adapted to the shape of the wheel hub. For example... Figure 4 As shown, the diaphragm 6 adopts a circular structure design with a diameter matching the wheel hub size. To meet usage requirements, the diaphragm is provided with the following functional openings: screw holes 7: for meeting the needs of wheel hub disassembly and assembly; heat dissipation holes 8: located near the brake discs to ensure the heat dissipation needs of the braking system; and inflation nozzle holes 9: for meeting the needs of tire inflation and deflation.

[0055] Considering the special usage environment at the wheel hub, the following improvements were made to the membrane 6 in this embodiment: a protective film was covered on the adhesive layer of the non-adhesive area to prevent impurities from adhering; a hydrophobic and oleophobic surface layer was sprayed on the non-adhesive area to prevent mud and dust from adhering; and an opaque pattern was printed on the outer surface of the membrane to reduce the impact of adhering dust on the aesthetics.

[0056] like Figure 5 As shown, a test was conducted on a pure electric SUV model. Test conditions were as follows: ambient temperature: 0℃ to 1℃; vehicle speed: 110 km / h cruise control; test route: fixed highway section; test time: nighttime (to minimize interference from other vehicles); starting point: battery capacity 83%; test results:

[0057] (1) Control group (without membrane):

[0058] Power consumption: 83%-77%

[0059] Mileage: 9.9 kilometers

[0060] Data fitting curve: y = 1.65x - 1.6714 (y is the driving distance, x is the remaining battery power)

[0061] Goodness of fit: R² = 0.9994

[0062] (2) Experimental group (with membrane installed):

[0063] Power consumption: 83%-77%

[0064] Mileage: 11.0 km

[0065] Data fitting curve: y = 1.8321x - 1.8 (y is the driving distance, x is the remaining battery power)

[0066] Goodness of fit: R² = 0.9999

[0067] Test results show that after installing the air resistance reduction membrane of this embodiment, the vehicle's driving range is increased by approximately 11.0%.

[0068] Example 4: Air resistance reduction membrane for car wheel hubs fixed with Velcro

[0069] like Figure 6 As shown, this embodiment provides an automotive air resistance reduction membrane, which is installed over the wheel hub of a vehicle. The membrane has a smooth outer surface, forming an aerodynamically smooth surface after installation to reduce air resistance.

[0070] Specifically, the membrane is made of PP material with a thickness of 0.2 mm. The membrane's fixing structure uses Velcro and includes two main components: Velcro and the membrane body. The Velcro consists of two parts: a male Velcro 10 fixed to the wheel hub and a female Velcro 11 fixed to the membrane body. The membrane body 12 is fixedly installed by the mutual adhesion of the Velcro.

[0071] The membrane is designed to fit the shape of the wheel hub. The membrane body 12 has a circular structure with a diameter that matches the size of the wheel hub.

[0072] The air resistance reduction effect of this embodiment is basically the same as that of Embodiment 3.

[0073] This embodiment uses a Velcro fastening method, which has the following advantages compared to the adhesive layer fastening structure in Embodiment 3: installation and disassembly are more convenient; the fastening strength is more reliable and is not affected by temperature and ambient humidity; it has good reusability and the fastening effect will not be reduced due to repeated disassembly and assembly; it is easy to clean and maintain; and it has a longer service life.

[0074] Implementation 5: Combined application of air resistance reduction films for automotive front grilles and wheel hubs

[0075] like Figure 7 As shown, this embodiment provides a combined application scheme for an automotive air resistance reducing membrane, which is simultaneously installed on both the front grille and wheel hubs of the vehicle. The membrane has a smooth outer surface, forming an aerodynamically smooth surface after installation to reduce air resistance.

[0076] Specifically, the combined application scheme includes:

[0077] Front grille air resistance reduction film 13: It is installed at the upper and lower grille positions using the adhesive layer fixing method described in Example 1;

[0078] Wheel hub air resistance reduction film 14: It is installed at all four wheel hub positions using the Velcro fixing method described in Example 4.

[0079] like Figure 8 As shown, a test was conducted on a pure electric SUV model. Test conditions were as follows: ambient temperature: 0℃ to 1℃; vehicle speed: 110 km / h cruise control; test route: fixed highway section; test time: nighttime (to minimize interference from other vehicles); starting point: battery capacity 83%; test results:

[0080] (1) Control group (without membrane):

[0081] Power consumption: 83%-77%

[0082] Mileage: 9.9 kilometers

[0083] Data fitting curve: y = 1.65x - 1.6714 (y is the driving distance, x is the remaining battery power)

[0084] Goodness of fit: R² = 0.9994

[0085] (2) Experimental group (two types of membranes installed simultaneously):

[0086] Power consumption: 83%-77%

[0087] Mileage: 11.4 kilometers

[0088] Data fitting curve: y=1.9x-1.8429 (y is the driving range, x is the remaining battery power)

[0089] Goodness of fit: R² = 0.9996

[0090] Test results show that installing drag-reducing films on both the front grille and wheel hubs simultaneously increases the vehicle's range by approximately 15.2%. Compared to installing the film at either location alone, the combined application approach demonstrates a more significant aerodynamic optimization effect.

Claims

1. A membrane for reducing air resistance in automobiles, characterized in that: The membrane has a smooth outer surface that covers the air resistance source on the vehicle surface, forming an aerodynamically smooth surface to reduce air resistance.

2. The automotive air resistance reduction membrane according to claim 1, characterized in that: The membrane is installed on the front grille of the vehicle.

3. The automotive air resistance reduction membrane according to claim 1, characterized in that: The membrane is installed at the wheel hub of the car.

4. The automotive air resistance reduction membrane according to claim 1, characterized in that: The membrane includes the following fixing structure: an adhesive layer disposed on the inner surface.

5. The automotive air resistance reduction membrane according to claim 1, characterized in that: The membrane includes one or more of the following fixing structures: hooks, buckles, Velcro, and straps.

6. The automotive air resistance reducing membrane according to claim 1, characterized in that: The membrane is adapted to the shape of its installation location and can be a single piece or composed of several parts.

7. The automotive air resistance reducing membrane according to claim 1, characterized in that: The membrane is provided with ventilation holes for heat dissipation.

8. The automotive air resistance reduction membrane according to claim 1, characterized in that: The membrane has screw holes at the wheel hub screw positions to meet the needs of wheel hub disassembly and assembly.

9. The automotive air resistance reduction membrane according to claim 1, characterized in that: The membrane has an inflation nozzle at the tire inflation nozzle position to meet the tire inflation and deflation needs.

10. The automotive air resistance reduction membrane according to claim 1, characterized in that: The film has a printed pattern.

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