Wind resistance kit, vehicle, and vehicle wind resistance control method

Abstract

The present application relates to a wind resistance kit, a vehicle, and a vehicle wind resistance control method, wherein the two ends of a rotating shaft are used to be rotatably connected to two mounting portions on the inner side of a front cover in the width direction of the vehicle; a flexible stopper is installed on the rotating shaft; a drive assembly is installed on the front cover and is transmission-connected to the rotating shaft to drive the flexible stopper to rotate around the rotating shaft to seal the gap between the front cover and the bumper, so that when the vehicle speed is high, the flexible stopper seals the gap and reduces the wind resistance of the entire vehicle; effectively blocks a large amount of external airflow from flowing into the engine cabin, effectively reduces the internal pressure of the engine compartment, reduces the positive pressure on the internal components of the cabin, reduces the internal and external pressure difference, thereby reducing wind resistance and improving the fuel economy of the entire vehicle; in addition, when the vehicle is cold-started, the gap can be sealed to isolate the external cold air, so that the engine can quickly reach the optimal operating temperature and reduce the preheating time.

Description

Technical Field

[0001] The present application relates to the field of vehicle exterior decorative parts, and in particular to a wind resistance kit, a vehicle, and a vehicle wind resistance control method. Background Art

[0002] Currently, because the front hood is a part suspended above the cab and the bumper is a part suspended below, the front hood and the bumper will have relative movement. In order to ensure that the front hood and the bumper do not interfere with each other during vehicle driving, a safety gap of about 40mm is generally required between the two. In addition, due to the need for air intake inside the engine compartment, the gap here is open and there is no filler between the front hood and the bumper to fill the gap.

[0003] In related technologies, a safety gap needs to be reserved between the lower end of the front hood and the bumper, and there is no corresponding filler or parts to block this gap. As a result, when the vehicle is driving at high speed, external airflow enters the engine compartment through the gap between the lower end of the front hood and the bumper, resulting in a large difference in internal and external air pressure and poor wind resistance characteristics of the entire vehicle.

[0004] In addition, commercial vehicles need to preheat the engine for a period of time in the second half of a cold start at a standstill to allow the engine to quickly reach the optimal operating temperature. This operation is particularly important when the external environment is low temperature. However, the safety gap reserved at the bottom of the front cover and the bumper will cause the engine heat to leak out, prolonging the preheating time and increasing fuel consumption. Summary of the Invention

[0005] The embodiments of the present application provide a wind resistance kit, a vehicle, and a vehicle wind resistance control method to solve the problems in the related art of a safety gap reserved at the mating position between the lower end of the front hood and the bumper, poor wind resistance characteristics of the entire vehicle during high-speed driving, and a long time for the engine to reach the optimal operating temperature after a cold start.

[0006] In a first aspect, a wind resistance kit is provided, comprising:

[0007] a rotating shaft arranged along the width direction of the vehicle, and having two ends thereof rotatably connected to two mounting portions on the inner side of the front cover;

[0008] a flexible stopper mounted on the rotating shaft;

[0009] The drive assembly is used to be installed on the front cover and is connected to the rotating shaft. The drive assembly is used to drive the flexible block to rotate around the rotating shaft to block the gap between the front cover and the bumper. Through the above settings, after the wind resistance kit is installed on the front cover of the vehicle, the following operations can be performed: when the vehicle speed is high, the flexible block blocks the gap to reduce the wind resistance of the entire vehicle; effectively blocks a large amount of external airflow from flowing into the engine cabin, effectively reduces the internal pressure of the engine compartment, reduces the positive pressure on the internal components of the cabin, reduces the internal and external pressure difference, and improves the fuel economy of the entire vehicle; in addition, when the vehicle is cold-started, the gap can be blocked to isolate the external cold air, so that the engine quickly reaches the optimal operating temperature, reduces the preheating time, and improves the fuel economy of the entire vehicle.

[0010] In some embodiments, the shaft comprises multiple shaft segments extending across the width of the vehicle, with adjacent shaft segments connected by universal joints. This universal joint design allows the shaft to rotate while also achieving a contoured configuration to align with the front hood. This ensures that the flexible stopper of the wind resistance kit, after rotation, better aligns with the bumper, enhancing sealing and reducing both vehicle wind resistance and the internal / external pressure differential.

[0011] In some embodiments, one flexible stopper is provided on each shaft segment;

[0012] The flexible stopper includes a cylindrical connecting portion, on which a first rib portion and a second rib portion are provided; in the radial direction of the rotating shaft segment, the length of the first rib portion is greater than the length of the second rib portion;

[0013] The first rib is designed to contact the bumper, while the second rib is designed to contact the front visor. This flexible block structure reduces the material and weight of the block while ensuring a good seal. After the shaft section rotates, the second rib overlaps the front visor, while the first rib overlaps the bumper. Furthermore, the cylindrical connection ensures the overall structural strength of the flexible block, minimizing deformation under pressure at high speeds, which could result in poor sealing.

[0014] Of course, the cross-section of the first and second sidewalls in the vehicle width direction is arc-shaped, and the angle between the first and second sidewalls is acute. The arc-shaped configuration, coupled with its flexibility, allows for a better fit with the bumper and front hood.

[0015] In some embodiments, the cross-sections of the first and second side ribs in the vehicle width direction are arc-shaped; and the angle between the first and second side ribs is an acute angle.

[0016] In some embodiments, the flexible stopper is made of rubber material.

[0017] In some embodiments, the wind resistance kit further includes a mounting plate, which is mounted on the inner side of the front mask; the mounting portion is provided on the mounting plate, and a drive assembly connection area is provided.

[0018] In some embodiments, the drive assembly includes a drive motor, and a first gear is provided on an output shaft of the drive motor;

[0019] Among the plurality of rotating shaft segments, one of the rotating shaft segments is provided with a second gear, which is engaged with the first gear, thereby realizing the wind resistance control kit by using only one drive assembly, thereby reducing costs.

[0020] In a second aspect, a vehicle is provided, comprising:

[0021] Wind resistance kit; the shaft of the wind resistance kit is rotatably connected to the front mask; the drive assembly is mounted on the inner side of the front mask and is connected to the vehicle power supply;

[0022] The control device is connected to the driving assembly and is used to obtain the vehicle speed; the control device is used to control the rotation angle of the rotating shaft according to the vehicle speed.

[0023] In a second aspect, a vehicle windage control method is provided, comprising the following steps:

[0024] Provision of vehicles;

[0025] Obtaining the vehicle speed and comparing the vehicle speed with a set threshold;

[0026] If the vehicle speed is greater than a set threshold, the control device controls the drive assembly to drive the rotating shaft to rotate the set angle so that the flexible block blocks the gap between the front cover and the bumper;

[0027] If the vehicle speed is greater than zero and less than a set threshold, the control device controls the drive assembly to rotate the shaft, causing the flexible block to return to its initial position. At higher speeds, the flexible block seals the gap, reducing wind resistance. This effectively blocks significant amounts of external airflow from entering the engine compartment, lowering internal pressure and the positive pressure on components within the compartment, reducing the internal and external pressure differential and improving vehicle fuel economy. Furthermore, during a cold start, the gap is sealed to isolate cold air, allowing the engine to quickly reach its optimal operating temperature, reducing warm-up time and improving overall fuel economy.

[0028] In some embodiments, the control device is further configured to obtain engine start / stop status and real-time engine temperature;

[0029] Comparing the vehicle speed with a set threshold also includes the following steps:

[0030] If the temperature is less than the set threshold and the vehicle speed is zero, the auxiliary preheating mode is entered; the auxiliary preheating mode includes the following steps:

[0031] Determine whether the engine start-stop state is a stop state;

[0032] When in the stopped state, the control device controls the driving assembly to drive the rotating shaft to rotate a set angle so that the flexible block blocks the gap between the front cover and the bumper;

[0033] When the engine is in the starting state and the real-time temperature of the engine is lower than the optimal operating temperature, the control device controls the flexible block to block the gap between the front cover and the bumper;

[0034] When the engine is in the starting running state and the real-time temperature of the engine is higher than the optimal operating temperature, the flexible stopper is controlled by the control device to reset to the initial position.

[0035] The beneficial effects of the technical solution provided by this application include:

[0036] The embodiments of the present application provide a wind resistance kit, a vehicle, and a vehicle wind resistance control method, in which the two ends of the rotating shaft are used to rotate and connect to two mounting parts on the inner side of the front cover in the width direction of the vehicle; a flexible stopper is installed on the rotating shaft; a drive assembly is installed on the front cover and is connected to the rotating shaft to drive the flexible stopper to rotate around the rotating shaft to seal the gap between the front cover and the bumper, so that when the vehicle speed is high, the flexible stopper seals the gap and reduces the wind resistance of the entire vehicle; it effectively blocks a large amount of external airflow from flowing into the engine cabin, effectively reduces the internal pressure of the engine cabin, reduces the positive pressure on the internal components of the cabin, reduces the internal and external pressure difference, thereby reducing wind resistance and improving the fuel economy of the entire vehicle; in addition, when the vehicle is cold-started, the gap can be sealed to isolate the external cold air, so that the engine can quickly reach the optimal operating temperature and reduce the warm-up time. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0038] Figure 1 A schematic diagram of the three-dimensional structure of a wind resistance kit provided between the front cover and bumper of a vehicle provided in an embodiment of the present application;

[0039] Figure 2 An exploded schematic diagram of a wind resistance kit provided between the front cover and bumper of a vehicle provided in an embodiment of the present application;

[0040] Figure 3 A schematic diagram showing the connection between the flexible stopper, the rotating shaft, and the drive assembly of the wind resistance kit provided in an embodiment of the present application;

[0041] Figure 4 A schematic diagram of the connection between multiple shaft segments of a shaft provided in an embodiment of the present application;

[0042] Figure 5 A schematic diagram of an unsealed gap of a flexible stopper provided in an embodiment of the present application;

[0043] Figure 6 A schematic diagram of a flexible stopper sealing gap provided in an embodiment of the present application;

[0044] Figure 7 A flow chart of a vehicle wind resistance control method provided in an embodiment of the present application;

[0045] Figure 8 This is a schematic diagram comparing the pressure cloud diagram of the CFD simulation analysis before the sealing gap and the pressure cloud diagram of the CFD simulation analysis after the sealing gap provided in the embodiment of the present application.

[0046] In the figure: 1. rotating shaft; 100. rotating shaft section; 101. universal joint; 102. second gear; 2. front cover; 3. flexible stopper; 300. cylinder connecting portion; 301. first rib portion; 302. second rib portion; 4. driving assembly; 400. driving motor; 401. first gear; 5. bumper; 6. mounting plate. DETAILED DESCRIPTION

[0047] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0048] Currently, because the front hood is a part suspended above the cab and the bumper is a part suspended below, the front hood and the bumper will have relative movement. In order to ensure that the front hood and the bumper do not interfere with each other during vehicle driving, a safety gap of about 40mm is generally required between the two. In addition, due to the need for air intake inside the engine compartment, the gap here is open and there is no filler between the front hood and the bumper to fill the gap.

[0049] In related technologies, a safety gap needs to be reserved between the lower end of the front hood and the bumper, and there is no corresponding filler or parts to block this gap. As a result, when the vehicle is driving at high speed, external airflow enters the engine compartment through the gap between the lower end of the front hood and the bumper, resulting in a large difference in internal and external air pressure and poor wind resistance characteristics of the entire vehicle.

[0050] In addition, commercial vehicles need to preheat the engine for a period of time in the second half of a cold start at a standstill to allow the engine to quickly reach the optimal operating temperature. This operation is particularly important when the external environment is low temperature. However, the safety gap reserved at the bottom of the front cover and the bumper will cause the engine heat to leak out, prolonging the preheating time and increasing fuel consumption.

[0051] The present invention provides a drag kit, a vehicle, and a vehicle drag control method to address the problems encountered in related technologies, such as the safety gap between the lower end of the front hood and the bumper, poor vehicle drag characteristics during high-speed driving, and the prolonged time it takes for the engine to reach optimal operating temperature after a cold start. The following describes the product structure and control method in detail.

[0052] First, see Figure 1-Figure 2 ,as well as Figure 5 and Figure 6 , a wind resistance kit, comprising:

[0053] A rotating shaft 1 is provided along the vehicle width direction, and its two ends are connected to two mounting portions on the inner side of the front cover 2 in the vehicle width direction for rotation;

[0054] A flexible stopper 3 is mounted on the rotating shaft 1;

[0055] The drive assembly 4 is used to be installed on the front mask 2 and is in transmission connection with the rotating shaft 1; the drive assembly 4 is used to drive the flexible stopper 3 to rotate around the rotating shaft 1 to block the gap between the front mask 2 and the bumper 5.

[0056] Through the above settings, after the wind resistance kit is installed on the front cover 2 of the vehicle, the following operations can be performed: when the vehicle speed is high, the flexible block 3 is used to block the gap to reduce the wind resistance of the entire vehicle; the external airflow is effectively blocked from flowing into the engine cabin, effectively reducing the internal pressure of the engine compartment, reducing the positive pressure on the internal components of the cabin, reducing the internal and external pressure difference, and improving the fuel economy of the entire vehicle; in addition, when the vehicle is cold-started, the gap can be blocked to isolate the external cold air, so that the engine can quickly reach the optimal operating temperature, reduce the preheating time, and improve the fuel economy of the entire vehicle.

[0057] Among them, in order to verify the effect of reducing the internal and external pressure difference, you can refer to Figure 8The CFD simulation analysis verification results shown are the CFD simulation analysis pressure cloud diagram, from which it can be clearly seen that the positive pressure on the internal components of the cabin is reduced.

[0058] In some preferred embodiments, since the front cover 2 is designed to be arc-shaped, the rotating shaft 1 in this solution is designed to include multiple rotating shaft segments 100 in the vehicle width direction, and the rotating shaft segments 100 of adjacent position segments are connected by universal joints 101 to ensure that the flexible block 3 of the wind resistance kit fits better with the bumper after rotation.

[0059] The above-designed universal joint 101 allows the shaft 1 to achieve a contoured setting while ensuring rotation, cooperating with the front cover 2; ensuring that the wind resistance kit flexible block 3 fits better with the bumper after rotation, thereby improving the sealing effect and ensuring the effect of reducing the wind resistance of the entire vehicle and reducing the internal and external pressure difference. Figure 3 and Figure 4 The content shown.

[0060] Furthermore, in order to ensure the sealing effect and reduce the preparation material of the flexible stopper 3, reference Figure 5 and Figure 6 , with the following settings:

[0061] A flexible stopper 3 is provided on each rotating shaft segment 100;

[0062] The flexible stopper 3 includes a cylindrical connecting portion 300 , on which a first rib portion 301 and a second rib portion 302 are provided. In the radial direction of the rotating shaft section 100 , the length of the first rib portion 301 is greater than the length of the second rib portion 302 .

[0063] The first rib portion 301 is used to contact the bumper 5 ; the second rib portion 302 is used to contact the front cover 2 .

[0064] The above structure of the flexible stopper 3 reduces the material and weight of the flexible stopper 3 while ensuring a good seal. After the shaft section 100 rotates, the second flange portion 302 overlaps and fits the front cover 2, while the first flange portion 301 overlaps and fits the bumper 5. Furthermore, the provision of the cylindrical connecting portion 300 ensures the overall structural strength of the flexible stopper 3, thereby suppressing deformation under pressure at high speeds, which would otherwise result in poor sealing.

[0065] Of course, the cross-section of the first and second sidewalls 301, 302 in the vehicle width direction is arc-shaped, and the angle between the first and second sidewalls 301, 302 is acute. The arc-shaped configuration, coupled with its flexibility, allows for a better fit with the bumper 5 and the front cover 2.

[0066] The above flexible stopper 3 is made of rubber material, and of course this application does not exclude other flexible sealing materials.

[0067] In some preferred embodiments, the windage kit also includes a mounting plate 6, which is mounted on the inner side of the front mask 2. The mounting plate 6 is provided with a mounting portion and a connection area for the drive assembly 4. The installation of the mounting plate 6 takes into account the potential for damage to the overall structure of the front mask 2 after installation of the windage kit, as well as the complexity of installing the windage kit. The mounting plate 6 allows the windage kit to be pre-installed on the inner side of the front mask 2, so that once the front mask 2 is installed, the windage kit is also installed.

[0068] In some preferred embodiments, see Figure 3 As shown, in order to realize the wind resistance control kit using only one drive assembly 4 and reduce the cost, the following settings are provided:

[0069] The driving assembly 4 includes a driving motor 400 , and a first gear 401 is provided on the output shaft of the driving motor 400 ;

[0070] Among the multiple shaft segments 100, one shaft segment 100 is provided with a second gear 102, which meshes with the first gear 401. The drive motor 400 is a stepper motor with a self-locking function, thereby preventing the shaft 1 from rotating under pressure and affecting the sealing effect.

[0071] In a second aspect, a vehicle is provided, comprising:

[0072] The windage kit described above; the shaft 1 of the windage kit is rotatably connected to the front cover 2; the drive assembly 4 is mounted on the inner side of the front cover 2 and is connected to the vehicle power supply;

[0073] The control device is connected to the driving assembly 4 and is used to obtain the vehicle speed; the control device is used to control the rotation of the shaft 1 to a set angle according to the vehicle speed.

[0074] The control device is also used to obtain the engine start and stop status and the real-time engine temperature.

[0075] When the vehicle is traveling at a high speed, the flexible block 3 blocks the gap, thereby reducing the wind resistance of the entire vehicle; effectively blocking a large amount of external airflow from flowing into the engine compartment, effectively reducing the internal pressure of the engine compartment, reducing the positive pressure on the internal components of the compartment, reducing the internal and external pressure difference, and improving the fuel economy of the entire vehicle; in addition, when the vehicle is cold-started, the gap can be blocked to isolate the external cold air, so that the engine can quickly reach the optimal operating temperature, reducing the preheating time, and improving the fuel economy of the entire vehicle.

[0076] Among them, in order to verify the effect of reducing the internal and external pressure difference, you can refer to Figure 8The CFD simulation analysis verification results shown are the CFD simulation analysis pressure cloud diagram, from which it can be clearly seen that the positive pressure on the internal components of the cabin is reduced.

[0077] It should be understood that the set angle refers to the optimal angle for sealing the gap between the front cover 2 and the bumper 5 , because excessive rotation of the shaft 1 may result in poor sealing effect.

[0078] The control device may include a processor, a memory, a communication interface, and a communication bus.

[0079] The communication bus can be of any type, used to interconnect the processor, memory, and communication interface. Communication interfaces include input / output (I / O) interfaces, physical interfaces, and logical interfaces, used to interconnect components within the vehicle drag control device, as well as interfaces used to interconnect the vehicle drag control device with other devices (e.g., other computing devices or user devices). Physical interfaces can be Ethernet interfaces, fiber optic interfaces, ATM interfaces, etc.; user devices can be displays, keyboards, etc. Memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disks, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc. The processor can be a general-purpose processor that can call programs stored in the memory and execute the vehicle drag control method provided in the embodiments of the present application. For example, a general-purpose processor may be a central processing unit (CPU).

[0080] In a third aspect, a vehicle wind resistance control method is provided, comprising the following steps:

[0081] Step 100: Provide a vehicle having the above characteristics;

[0082] Step 101: Obtain the vehicle speed and compare the vehicle speed with a set threshold;

[0083] Step 102: If the vehicle speed is greater than a set threshold, the control device controls the drive assembly 4 to rotate the shaft 1 by a set angle so that the flexible block 3 blocks the gap between the front cover 2 and the bumper 5; the set threshold is 90 km / h.

[0084] Step 103 : If the vehicle speed is greater than zero and less than a set threshold, the control device controls the driving assembly 4 to drive the rotating shaft 1 to rotate, so that the flexible stopper 3 is reset to the initial position.

[0085] In some preferred embodiments, the control device is further configured to obtain the engine start / stop status and the real-time engine temperature;

[0086] Comparing the vehicle speed with a set threshold also includes the following steps:

[0087] Step 104: If the temperature is less than the set threshold and the vehicle speed is zero, enter the auxiliary preheating mode; the auxiliary preheating mode includes the following steps:

[0088] Determine whether the engine start-stop state is a stop state;

[0089] When in the stopped state, the control device controls the driving assembly 4 to drive the rotating shaft 1 to rotate the set angle so that the flexible stopper 3 blocks the gap between the front cover 2 and the bumper 5;

[0090] When the engine is in the startup state and the real-time temperature of the engine is lower than the optimal operating temperature, the control device controls the flexible block 3 to block the gap between the front cover 2 and the bumper 5;

[0091] When the engine is in the startup state and the real-time temperature of the engine is higher than the optimal operating temperature, the control device controls the flexible stopper 3 to reset to the initial position.

[0092] The initial position in the reset back to the initial position refers to Figure 5 The position of the flexible stop 3 is shown.

[0093] The above control method achieves the following effects:

[0094] (1) Automatically identify vehicle speed. Under high-speed conditions, the wind resistance kit seals and blocks the gap between the front cover 2 and the upper end of the bumper 5, reducing the wind resistance of the entire vehicle. In addition, it also blocks the external airflow from flowing into the engine compartment during driving, reducing the pressure difference between the inside and outside, thereby reducing wind resistance and improving the fuel economy of the entire vehicle.

[0095] (2) When the engine is started when the vehicle is stationary, the wind resistance kit isolates the external cold air, allowing the engine to quickly reach the optimal operating temperature, reducing the warm-up time and improving the fuel economy of the vehicle.

[0096] (3) In addition, the auxiliary preheating mode is accurately implemented, and real-time control is performed based on the engine start / stop status and the real-time engine temperature. This avoids the malfunction of the wind resistance kit caused by the engine reaching the optimal operating temperature when the vehicle is stationary. It also achieves accurate and differentiated control of high-speed sealing to reduce wind resistance and preheating during cold start.

[0097] The above vehicles are distinguished by their common characteristics, purpose, and function; for example, cars, trucks, buses, trailers, incomplete vehicles, and motorcycles are all separate categories. Of course, they can also be broadly divided into new energy vehicles and fuel vehicles based on their energy sources.

[0098] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0099] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0100] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A wind resistance kit, characterized in that: It includes: A rotating shaft (1) is arranged along the width direction of the vehicle, and its two ends are used for rotationally connecting to two mounting portions on the inner side of the front cover (2); A flexible stopper (3) mounted on the rotating shaft (1); A drive assembly (4) is mounted on the front cover (2) and is in transmission connection with the rotating shaft (1); the drive assembly (4) is used to drive the flexible stopper (3) to rotate around the rotating shaft (1) to seal the gap between the front cover (2) and the bumper (5); The rotating shaft (1) comprises a plurality of rotating shaft segments (100) in the vehicle width direction, and two adjacent rotating shaft segments (100) are connected via a universal joint (101); one flexible stopper (3) is provided on each rotating shaft segment (100); The flexible stopper (3) comprises a cylindrical connecting portion (300), and a first rib portion (301) and a second rib portion (302) are provided on the cylindrical connecting portion (300); in the radial direction of the rotating shaft section (100), the length of the first rib portion (301) is greater than the length of the second rib portion (302); the first rib portion (301) is used to contact the bumper (5); the second rib portion (302) is used to contact the front mask (2); the cross-section shape of the first rib portion (301) and the second rib portion (302) in the vehicle width direction is an arc; and the angle between the first rib portion (301) and the second rib portion (302) is an acute angle.

2. The wind resistance kit according to claim 1, characterized in that: The flexible stopper (3) is made of rubber material.

3. The wind resistance kit according to claim 1, wherein: The wind resistance kit further comprises a mounting plate (6), which is mounted on the inner side of the front cover (2); the mounting portion is provided on the mounting plate (6), and a drive assembly (4) connection area is provided.

4. The wind resistance kit according to claim 1, wherein: The driving assembly (4) comprises a driving motor (400), and a first gear (401) is provided on an output shaft of the driving motor (400); Among the plurality of rotating shaft segments (100), one rotating shaft segment (100) is provided with a second gear (102), and the second gear (102) is meshed with the first gear (401).

5. A vehicle, characterized in that: It includes: The wind resistance kit according to any one of claims 1 to 4; The rotating shaft (1) of the wind resistance kit is rotatably connected to the front cover (2); the driving assembly (4) is installed on the inner side of the front cover (2) and is connected to the vehicle power supply; A control device is connected to the drive assembly (4) and is used to obtain the vehicle speed; the control device is used to control the rotation of the rotating shaft (1) to a set angle according to the vehicle speed.

6. A vehicle wind resistance control method, characterized in that: It includes the following steps: Providing a vehicle as claimed in claim 5; Obtaining the vehicle speed and comparing the vehicle speed with a set threshold; If the vehicle speed is greater than a set threshold, the control device controls the driving assembly (4) to drive the rotating shaft (1) to rotate at a set angle, so that the flexible block (3) blocks the gap between the front cover (2) and the bumper (5); If the vehicle speed is greater than zero and less than a set threshold, the control device controls the drive assembly (4) to drive the rotating shaft (1) to rotate, so that the flexible stopper (3) is reset to the initial position.

7. The vehicle wind resistance control method according to claim 6, wherein: The control device is also used to obtain the engine start / stop status and the real-time engine temperature; Comparing the vehicle speed with a set threshold also includes the following steps: If the temperature is less than the set threshold and the vehicle speed is zero, the auxiliary preheating mode is entered; the auxiliary preheating mode includes the following steps: Determine whether the engine start-stop state is a stop state; When in a stopped state, the control device controls the driving assembly (4) to drive the rotating shaft (1) to rotate at a set angle, so that the flexible stopper (3) blocks the gap between the front cover (2) and the bumper (5); When the engine is in the startup state and the real-time temperature of the engine is lower than the optimal operating temperature, the control device controls the flexible block (3) to block the gap between the front cover (2) and the bumper (5); When the engine is in the starting operation state and the real-time temperature of the engine is higher than the optimal operating temperature, the flexible stopper (3) is controlled by the control device to reset to the initial position.

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