Passive self-adaptive automobile wake flow controller

Abstract

The invention provides a passive self-adaptive automobile wake flow controller. The passive self-adaptive automobile wake flow controller structurally comprises an air inlet pipe, a turbulent flow pipe, a branch pipe and an air injection structure. The air inlet pipe is fixed to the bottom of the automobile and used for guiding airflow generated by relative movement in the automobile running process into the wake flow controller. After the turbulent flow pipe is connected to the air inlet pipe, an impeller is arranged in the turbulent flow pipe and used for conducting unsteady disturbance on airflow, and unsteady control airflow is generated. After the branch pipe is connected to the turbulent flow pipe, unsteady control airflow is divided into multiple strands of airflow, and multi-point control is achieved. The air injection structure is connected to the branch pipe, then arranged at the tail of the automobile and used for injecting the unsteady control airflow into the unstable airflow at the tail of the automobile, and wake flow control is achieved. According to the technical scheme, the unsteady flow control effect of the automobile wake flow is achieved through the simple structure, and different control effects can be provided in a self-adaptive mode according to the automobile speed.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile wake control, and in particular relates to a passive adaptive automobile wake controller. Background Art

[0002] The formation of car wake is due to the fact that when the car is driving, the body pushes the air away, forming a vortex structure at the rear of the car. These vortex structures increase the disturbance of the air, thereby increasing the air resistance. As the speed of the car increases, the influence of the wake becomes more and more significant, the air resistance rises sharply, and energy consumption increases. Therefore, car wake is one of the important factors affecting the energy economy of the car.

[0003] Existing automobile wake control solutions mainly include passive control and active control. Among them, passive control solutions include optimizing the body shape, adding spoilers (such as spoilers, tail wings, etc.) to the rear of the vehicle, etc. Active control solutions include installing jet devices at the rear of the vehicle, adding actively adjustable tail wings to the parking space, etc. The above mainstream control solutions have the following disadvantages:

[0004] 1. Once the current passive control scheme is designed and applied to the vehicle, it is difficult to adjust or change it. When the flow state deviates from its design range, it may not achieve the best control effect, or even have the opposite effect. And when the wind speed and wind direction change, the actual effect of the passive control means may deviate from the design expectation.

[0005] 2. The current active control solutions require a certain amount of energy to drive external devices or systems, and because they involve advanced sensors, controllers, actuators and other equipment, as well as complex system integration and debugging processes, the cost is usually high. Summary of the invention

[0006] The present invention relates to a passive adaptive automobile wake controller, which aims to provide an automobile wake control solution with simple structure, strong adaptability, high efficiency and low cost, so as to reduce the air resistance of the vehicle during driving, improve the stability of the vehicle during high-speed driving, and help reduce the wind noise during the driving of the vehicle.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A passive adaptive automobile wake controller, the structure of which includes an intake pipe, a spoiler pipe, a branch pipe and an injection structure. The intake pipe is fixed to the bottom of the automobile and is used to introduce the airflow generated by the relative movement of the vehicle during driving into the wake controller. The spoiler pipe is connected to the intake pipe and is provided with an impeller inside, which is used to perform unsteady disturbance on the airflow to generate unsteady control airflow. The branch pipe is connected to the spoiler pipe and divides the unsteady control airflow into multiple airflows to achieve multi-point control. The injection structure is connected to the branch pipe and is arranged at the rear of the automobile and is used to inject the unsteady control airflow into the unstable airflow at the rear of the automobile to achieve wake control.

[0009] As a preferred technical solution of the present application, the air intake pipe is low in front and high in the back, and is arranged at a certain inclination angle to the ground, and the inclination angle α is 2° to 10°. The inclination angle α is preferably 5°.

[0010] As a preferred technical solution of the present application, the spoiler tube includes a tube shell, and connecting sections with a diameter smaller than the tube shell are provided at both ends of the tube shell. The impeller is assembled in the tube shell, one end of the impeller is rotatably connected to the inner wall of the tube shell, and the other end of the impeller is equipped with a cover plate, and the cover plate is sealingly assembled and connected to the tube shell.

[0011] As a preferred technical solution of the present application, the branch pipe also includes an air intake section, one side of which is connected to the spoiler pipe, and the other side is provided with a plurality of interfaces for connecting to the hose.

[0012] As a preferred technical solution of the present application, the branch pipe divides the airflow flowing out of the spoiler pipe into N streams, and the width W of a single jet structure satisfies 0.6 L≤N×W≤1.0 L with the width L of the rear of the vehicle.

[0013] As a preferred technical solution of the present application, the jet structure is arranged transversely and distributed in the middle of the rear of the car and covers the entire width of the car.

[0014] As a preferred technical solution of the present application, the air intake pipe and the jet structure are both provided with dustproof nets.

[0015] The beneficial effects of the present invention are:

[0016] 1. Strong adaptability: The airflow in the controller pipeline is completely generated by the relative movement of the vehicle during driving. The strength of the control airflow and wake is consistent with the vehicle speed, achieving adaptability. At the same time, the airflow fluctuation characteristics generated when passing through the spoiler tube are relatively consistent with the vehicle wake fluctuation characteristics, which is an important basis for achieving unsteady airflow control.

[0017] 2. High efficiency: By utilizing the leverage effect of unsteady airflow control, compared with the steady tail jet scheme, it can produce a greater control effect with a smaller energy input, and the control effect is better.

[0018] 3. Simple structure, easy installation and maintenance, and wide application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of a passive adaptive automobile wake controller.

[0020] Figure 2 This is a side view of the controller installation location.

[0021] Figure 3 This is a tail schematic diagram of the controller installation location.

[0022] Figure 4 It is a schematic diagram of the spoiler tube structure.

[0023] Figure 5 It is a schematic diagram of the branch pipe structure.

[0024] Figure 6 It is a schematic diagram of the jet structure.

[0025] The following is a description of the markings in the drawings of the specification:

[0026] 1. Intake pipe; 2. Turbine; 3. Branch pipe; 4. Jet structure; 5. Dust screen; 6. Impeller; 7. Tube shell; 8. Cover plate; 9. Connecting section; 10. Hose; 11. Intake section. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] In the following embodiments, the same or similar reference numerals throughout represent the same or similar components or components with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] In the description of the present invention, it should be understood that the terms: center, longitudinal, transverse, length, width, thickness, up, down, front, back, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and therefore cannot be understood as limiting the present invention. In addition, the terms: first, second, etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features shown. In the description of the present invention, unless otherwise clearly specified and limited, the terms: install, connect, connect, etc. should be understood in a broad sense, and ordinary technicians in this field can understand the specific meaning of the above terms in this practicality according to the specific circumstances.

[0030] Reference Figures 1 to 6The passive adaptive automobile wake controller proposed in the present invention comprises an intake pipe 1, a spoiler pipe 2, a branch pipe 3, an injection structure 4 and a dustproof net 5. The intake pipe 1 is fixed to the bottom of the automobile, and is used to introduce the airflow generated by the relative movement of the vehicle during driving into the wake controller. The spoiler pipe 2 is connected to the intake pipe 1, and an impeller 6 is provided inside, which is used to perform unsteady disturbance on the airflow to generate an unsteady control airflow. The branch pipe 3 is connected to the spoiler pipe 2, and the unsteady control airflow is divided into multiple airflows to achieve multi-point control. The injection structure 4 is connected to the branch pipe 3 and is arranged at the rear of the automobile, and is used to inject the unsteady control airflow into the unstable airflow at the rear of the automobile to achieve wake control.

[0031] Among them, the air intake pipe 1 is set at a certain inclination angle with the ground, and the inclination angle α is 2°~10°, so as to facilitate daily drainage and descaling. When the inside of the pipeline is slightly blocked, water and air can be sprayed in reverse from the controller to clear it, and it can be disassembled for clearing when it is seriously blocked. Further, the inclination angle α is preferably 5°. The selection of this angle takes into account that if the inclination angle is too large (for example, more than 10°), although it can drain and descaling faster, it also reduces the air intake. For some application scenarios, too large an inclination may cause restrictions on the installation space or affect the overall layout aesthetics. If the inclination angle is too small (for example, less than 2°), although the air intake is increased, the drainage and descaling efficiency is reduced. The angle of 5° better balances the needs of these two aspects. At the same time, the 5° inclination design is also conducive to the cleaning medium to better reach the blocked part, and use its own weight to help clear obstacles, and it will not cause difficulty in the reflux of the cleaning liquid due to being too flat.

[0032] In the present application, the spoiler tube 2 includes a tube shell 7, and the two ends of the tube shell 7 are provided with a connecting section 9 with a smaller diameter than the tube shell 7. The impeller 6 is assembled in the tube shell 7, and one end of the impeller 6 is rotatably connected to the inner wall of the tube shell 7. The other end of the impeller 6 is equipped with a cover plate 8, and the cover plate 8 is sealed and assembled with the tube shell 7. This design is convenient for maintenance. When the airflow enters the spoiler tube 2, it will blow the impeller 6 to rotate. At this time, the flow channel between the impeller 6 and the tube shell 7 will also change periodically, forming an unsteady flow channel size, thereby controlling the flow size to form an unsteady control effect. When the vehicle speed is fast, the speed of the airflow passing through the spoiler tube 2 is also large, driving the rotation speed of the impeller 6 to rotate is also higher, and the corresponding unsteady control frequency is also higher, otherwise the control frequency is low.

[0033] In the present application, the branch pipe 3 also includes an air intake section 11, one side of which is connected to the spoiler pipe 2, and the other side is provided with a plurality of interfaces for connecting to the hose 10. The branch pipe 3 divides the airflow flowing out of the spoiler pipe 2 into N streams, and the width W of a single jet structure 4 satisfies 0.6 L≤N×W≤1.0 L with the width L of the rear of the car. The jet structure 4 is arranged laterally in the middle of the rear of the car and covers the entire width of the car. This design ensures that the jet structure 4 can cover the entire rear of the car to effectively suppress the formation of vortices at the rear of the car, reduce air resistance, and improve the driving efficiency of the vehicle. The design also takes into account the differences between different models and rear structures, allowing the position and number of the jet structure 4 to be flexibly adjusted to meet different control requirements, reflecting the adaptability and practicality of the present invention.

[0034] In addition, the air inlet pipe 1 and the jet structure 4 are both provided with dustproof nets 5 for daily dust and dirt prevention.

[0035] The working principle of the present invention is as follows: During the driving process of the vehicle, the airflow generated by the relative motion enters the spoiler 2 through the intake pipe 1 to drive the impeller 6 to rotate, and the airflow is converted into an unsteady control airflow through the unsteady disturbance of the impeller 6. The unsteady control airflow is divided into multiple airflows through the branch pipe 3. Multiple airflows enter the jet structure 4 and are sprayed into the unstable airflow at the rear of the car to achieve control of the wake. The greater the speed of the car, the stronger the control airflow generated, which can weaken the stronger wake, and then it can realize adaptively providing different control effects according to the speed of the vehicle, thereby reducing the air resistance during the driving process of the vehicle.

[0036] The present invention achieves the unsteady flow control effect on the automobile wake through a simple structure, and can adaptively provide different control effects according to the vehicle speed, thereby reducing the air resistance of the vehicle during driving, improving the stability of the vehicle during high-speed driving, and helping to reduce wind noise during vehicle driving.

[0037] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.

Claims

1. A passive adaptive automobile wake controller, characterized in that: include: An air intake pipe (1) is fixed to the bottom of the vehicle, and an air intake port of the air intake pipe (1) faces the front of the vehicle; A spoiler pipe (2) connected to the air inlet pipe (1), wherein an impeller (6) for causing unsteady disturbance to the airflow is arranged inside the spoiler pipe (2); A branch pipe (3) connected to the spoiler pipe (2), wherein a plurality of hoses (10) are provided on the branch pipe (3); The jet structures (4) are provided in a number corresponding to the number of the hoses (10). The jet structures (4) are connected to the outlet ends of the hoses (10) and are arranged at the rear of the vehicle.

2. A passive adaptive vehicle wake controller according to claim 1, characterized in that: The air intake pipe (1) is lower in the front and higher in the rear, and is arranged at a certain inclination angle to the ground, wherein the inclination angle α is 2° to 10°.

3. A passive adaptive vehicle wake controller according to claim 2, characterized in that: The inclination angle α is 5°.

4. A passive adaptive vehicle wake controller according to claim 1, characterized in that: The spoiler tube (2) comprises a tube shell (7), and connecting sections (9) having a smaller diameter than the tube shell (7) are arranged at both ends of the tube shell (7). The impeller (6) is assembled in the tube shell (7), and one end of the impeller (6) is rotatably connected to the inner wall of the tube shell (7). The other end of the impeller (6) is equipped with a cover plate (8), and the cover plate (8) is sealed and assembled with the tube shell (7).

5. A passive adaptive vehicle wake controller according to claim 1, characterized in that: The branch pipe (3) further comprises an air intake section (11), one side of the air intake section (11) being connected to the spoiler pipe (2), and the other side of the air intake section being provided with a plurality of interfaces for connecting to the hose (10).

6. A passive adaptive vehicle wake controller according to claim 1, characterized in that: The branch pipe (3) divides the airflow flowing out of the spoiler pipe (2) into N streams, and the width W of a single jet structure (4) satisfies 0.6 L≤N×W≤1.0 L relative to the width L of the rear of the vehicle.

7. A passive adaptive vehicle wake controller according to claim 1, characterized in that: The jet structure (4) is arranged transversely and distributed in the middle of the rear of the vehicle and covers the entire width of the vehicle.

8. A passive adaptive vehicle wake controller according to claim 1, characterized in that: The air intake pipe (1) and the air injection structure (4) are both provided with dust-proof nets (5).

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