Truck intelligent pneumatic accessory and control method

Abstract

The application discloses a truck intelligent pneumatic accessory and a control method, and relates to the technical scheme as follows: a truck intelligent pneumatic accessory, which comprises an intelligent guide vane installed at the tail of a vehicle, and a flexible control mechanism is arranged on the intelligent guide vane and used for controlling the curvature of the intelligent guide vane.The curvature of the intelligent guide vane can be changed according to the actual environment of vehicle driving by the intelligent guide vane, and the intelligent guide vane is controlled in a closed loop by vehicle information.The device is driven by flexible air pressure, so that the intelligent guide vane can change rapidly in a large curvature range and adapt to more working environments.The device has simple structure and is convenient to install.

Description

Technical Field

[0001] This invention relates to the field of automotive accessories, and in particular to an intelligent pneumatic accessory for trucks and a control method thereof. Background Technology

[0002] In recent years, my country's economy has continued to develop, and domestic and international markets have expanded. Road transportation plays a vital role in the flow of goods and services. However, the contradiction between global resource depletion and increasing vehicle fuel consumption has prompted the automotive industry to strive for optimal energy-saving solutions. Current research indicates that vehicle resistance mainly consists of rolling resistance and air resistance. Air resistance increases with vehicle speed, exceeding 50% of total resistance at speeds of 60 km / h. Therefore, reducing air resistance during vehicle operation is crucial for energy conservation and emission reduction in automobiles.

[0003] The main sources of air resistance in automobiles are friction between the air and the vehicle body surface, as well as the pressure difference between the front and rear of the vehicle. Engineers use biomimetic drag reduction techniques and aerodynamic accessories to reduce the front-rear pressure difference drag. Patent (CN201821421182.X) proposes installing a spoiler at the rear to reduce the front-rear pressure difference. However, passive drag reduction methods cannot adapt to varying operating environments, leaving room for optimization in the drag reduction design. Patent (CN201821463698.0) proposes installing an adjustable drag-reducing aerodynamic accessory at the rear of the vehicle. The driver adjusts the angle between the drag-reducing cover and the vehicle hydraulically, but the hydraulic adjustment mechanism needs to be installed on the passenger compartment and occupies a significant amount of space. Furthermore, rigid spoilers cannot suppress the generation of vortices at the rear of the vehicle by changing the spoiler's curvature, thus failing to adapt to the complex and varied flow conditions at the rear of the vehicle.

[0004] Recently, engineers proposed an active flow control-based automotive drag reduction system and method (CN201811620983.3), as well as an adaptive plasma drag reduction device and drag reduction control method (CN201910454380.9). Both active drag reduction methods utilize pulsed jets and plasma, respectively, to modify the device parameters based on the vehicle's speed and driving environment, thereby altering the vehicle's wake and reducing the front-to-rear pressure difference, thus reducing the vehicle's air resistance.

[0005] However, both methods have their drawbacks. Active jet devices require modifications to the vehicle's structure to create the jet inlet and also necessitate complex air pressure generation devices, increasing the vehicle's design complexity. Plasma drag reduction devices require high-frequency pulses to generate plasma wind, but have lower energy conversion efficiency and less drag reduction effect. Summary of the Invention

[0006] In view of the problems mentioned in the background art, the purpose of this invention is to provide an intelligent pneumatic accessory and control method for trucks to solve the problems mentioned in the background art.

[0007] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0008] A smart pneumatic accessory for trucks includes a smart deflector installed at the rear of the vehicle, wherein the smart deflector is provided with a flexible control mechanism for controlling the curvature of the smart deflector.

[0009] Preferably, the flexible control mechanism includes a primary airbag, a secondary airbag, a tertiary airbag, a quaternary airbag, and a quinary airbag. The primary airbag, secondary airbag, tertiary airbag, quaternary airbag, and quinary airbag are arranged sequentially and share a node at adjacent locations. The flexible control mechanism is connected to a control system. The control system controls the air pressure of the primary airbag, secondary airbag, tertiary airbag, quaternary airbag, and quinary airbag to make the intelligent deflector bend into different arcs to adapt to the vehicle's movement.

[0010] Preferably, the end of the intelligent guide plate is provided with a mounting mechanism, the mounting mechanism including a threaded hole or pin hole for mounting and fixing.

[0011] Preferably, the control system includes a pressure measuring device, a speed measuring device, a vehicle control subsystem, a deflector control unit, an air pump device, and an electronically controlled air pressure valve. The speed measuring device and the pressure measuring device are used to measure the vehicle speed and the pressure information at the rear of the vehicle, respectively. The speed measuring device and the pressure measuring device are electrically connected to the control input terminal of the vehicle control subsystem. The control output terminal of the vehicle control subsystem is electrically connected to the deflector control unit. The control output terminal of the deflector control unit is electrically connected to the air pump device and the electronically controlled air pressure valve. The electronically controlled air pressure valve is installed on the air path from the air pump device to the first-stage airbag, second-stage airbag, third-stage airbag, fourth-stage airbag, and fifth-stage airbag.

[0012] Preferably, the cross-section of the installation mechanism is rectangular, and the intelligent guide plate is a flexible plate.

[0013] This invention also discloses a method for intelligent control of trucks, comprising the following steps:

[0014] First, set a vehicle speed threshold 'a' for the intelligent deflector. When the detected vehicle speed reaches 'a', the intelligent deflector starts to work.

[0015] The vehicle control subsystem acquires vehicle speed, ambient wind speed, and pressure information fed back from the rear of the vehicle through connected pressure and speed measuring devices, respectively.

[0016] After reading the relevant information, the vehicle control subsystem controls the pressure required by each level of airbags through the trained model in the deflector control unit and the flexible control mechanism on the intelligent deflector.

[0017] Finally, the air pump device and electronically controlled air pressure valve pressurize the air into each level of airbags. The pressure information fed back determines whether the intelligent deflector has deformed to the required curvature, thereby realizing the intelligent drag reduction function of the deflector.

[0018] In summary, the present invention has the following main beneficial effects:

[0019] 1. This invention uses an intelligent air deflector to change the curvature of the intelligent air deflector according to the actual driving environment of the vehicle, and uses vehicle information to form a closed-loop control of the intelligent air deflector.

[0020] 2. This device uses flexible pneumatic drive, which enables the intelligent guide plate to change rapidly within a large arc range, adapting to more working environments.

[0021] 3. This device has a simple structure and is easy to install. Attached Figure Description

[0022] Figure 1 This is one of the structural schematic diagrams of an intelligent air deflector;

[0023] Figure 2 This is the second schematic diagram of the intelligent air deflector;

[0024] Figure 3 This is a structural cross-sectional view of the flexible control mechanism;

[0025] Figure 4 It is a block diagram of the control system;

[0026] Figure 5 It is a flowchart of the control method;

[0027] Figure 6 This is a schematic diagram of the structure of the present invention during installation and use.

[0028] Reference numerals: 1. Intelligent deflector; 2. Flexible control mechanism; 21. Primary airbag; 22. Secondary airbag; 23. Tertiary airbag; 24. Quadruple airbag; 25. Fifth airbag; 26. Node. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] refer to Figures 1-3 A smart pneumatic accessory for trucks includes a smart deflector 1 installed at the rear of the vehicle, wherein the smart deflector 1 is provided with a flexible control mechanism 2 for controlling the curvature of the smart deflector 1.

[0031] refer to Figures 1-3 The flexible control mechanism 2 includes a primary airbag 21, a secondary airbag 22, a tertiary airbag 23, a quaternary airbag 24, and a quinary airbag 25. The primary airbag 21, secondary airbag 22, tertiary airbag 23, quaternary airbag 24, and quinary airbag 25 are arranged sequentially and share a node 26 at adjacent locations. The flexible control mechanism 2 is connected to a control system. The control system controls the air pressure of the primary airbag 21, secondary airbag 22, tertiary airbag 23, quaternary airbag 24, and quinary airbag 25 to make the intelligent deflector 1 bend into different arcs to adapt to the vehicle's movement.

[0032] refer to Figures 1-3 The intelligent guide plate 1 is provided with an installation mechanism at its end, the installation mechanism including threaded holes or pin holes for installation and fixing; wherein the cross-section of the installation mechanism is rectangular, and the intelligent guide plate 1 is a flexible plate.

[0033] refer to Figures 1 to 5 This invention utilizes an intelligent air deflector 1, which adjusts its curvature according to the actual driving environment of the vehicle, forming a closed-loop control system based on vehicle information. The device employs flexible pneumatic actuation, enabling the intelligent air deflector 1 to rapidly change its curvature within a wide range, adapting to various working environments. The device has a simple structure and is easy to install.

[0034] refer to Figures 1 to 5 The control system includes a pressure measuring device, a speed measuring device, a vehicle control subsystem, a deflector control unit, an air pump device, and an electronically controlled air pressure valve. The speed measuring device and the pressure measuring device are used to measure the vehicle speed and the pressure information at the rear of the vehicle, respectively. The speed measuring device and the pressure measuring device are electrically connected to the control input terminal of the vehicle control subsystem. The control output terminal of the vehicle control subsystem is electrically connected to the deflector control unit. The control output terminal of the deflector control unit is electrically connected to the air pump device and the electronically controlled air pressure valve. The electronically controlled air pressure valve is installed on the air path from the air pump device to the first-stage airbag 21, the second-stage airbag 22, the third-stage airbag 23, the fourth-stage airbag 24, and the fifth-stage airbag 25. Figure 5 This is a longitudinal cross-sectional view of the flexible control mechanism 2. When pressure is injected into the first-stage airbag 21, the second-stage airbag 22, the third-stage airbag 23, the fourth-stage airbag 24, and the fifth-stage airbag 25, a pair of opposing forces are generated at the nodes, which stretch the relaxed upper part, thereby transforming the smaller curvature into a larger curvature.

[0035] refer to Figures 1 to 5 A method for intelligent control of trucks includes the following steps:

[0036] First, set a vehicle speed threshold a for the intelligent deflector 1. When the detected vehicle speed reaches a, the intelligent deflector 1 starts to work.

[0037] The vehicle control subsystem acquires vehicle speed, ambient wind speed, and pressure information fed back from the rear of the vehicle through connected pressure and speed measuring devices, respectively.

[0038] After reading the relevant information, the vehicle control subsystem controls the pressure required by each level of airbags through the trained model in the deflector control unit and the flexible control mechanism 2 on the intelligent deflector 1.

[0039] Finally, the air pump device and electronically controlled air pressure valve pressurize the air into each level of airbags. The pressure information fed back determines whether the intelligent guide plate 1 has been deformed to the required curvature, thereby realizing the intelligent drag reduction function of the guide plate.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A smart pneumatic attachment for a truck, characterized by: The application relates to a smart deflector (1) installed at the tail of a vehicle, wherein a flexible control mechanism (2) for controlling the curvature of the smart deflector (1) is arranged on the smart deflector (1). The flexible control mechanism (2) comprises a first-stage air bag (21), a second-stage air bag (22), a third-stage air bag (23), a fourth-stage air bag (24) and a fifth-stage air bag (25), wherein the first-stage air bag (21), the second-stage air bag (22), the third-stage air bag (23), the fourth-stage air bag (24) and the fifth-stage air bag (25) are sequentially arranged and share a node (26) at adjacent positions, and the flexible control mechanism (2) is connected with a control system, wherein the control system controls the air pressure of the first-stage air bag (21), the second-stage air bag (22), the third-stage air bag (23), the fourth-stage air bag (24) and the fifth-stage air bag (25) to make the smart deflector (1) bend into different curvatures to adapt to the driving of the vehicle. The control system comprises a pressure measurer, a speed measurer, a vehicle control subsystem, a deflector control unit, a gas pump device and an electronic control air pressure valve, wherein the speed measurer and the pressure measurer are respectively used for measuring the vehicle speed and the tail pressure information of the vehicle, the speed measurer and the pressure measurer are electrically connected with the control input end of the vehicle control subsystem, the control output end of the vehicle control subsystem is electrically connected with the deflector control unit, the control output end of the deflector control unit is electrically connected with the gas pump device and the electronic control air pressure valve, and the electronic control air pressure valve is installed on the air path of the gas pump device leading to the first-stage air bag (21), the second-stage air bag (22), the third-stage air bag (23), the fourth-stage air bag (24) and the fifth-stage air bag (25).

2. A smart pneumatic attachment for a truck as claimed in claim 1, wherein: The end of the smart deflector (1) is provided with a mounting mechanism, and the mounting mechanism comprises a threaded hole or a pin hole for mounting and fixing.

3. A smart pneumatic hitch for a trailer as claimed in claim 1, characterized in that: The cross section of the mounting mechanism is rectangular, and the smart deflector (1) is a flexible plate.

4. A method of intelligent control of a truck according to any one of claims 1-3, characterized in that: The application comprises the following steps: A vehicle speed threshold a is set for the smart deflector (1), and the smart deflector (1) starts to work when the detected vehicle speed reaches a; The vehicle control subsystem obtains the speed, the environmental wind speed and the pressure information fed back by the tail of the vehicle through the connected pressure measurer and speed measurer; After the vehicle control subsystem reads the relevant information, the model trained in the deflector control unit and the pressure required for controlling the air bags of the flexible control mechanism (2) on the smart deflector (1) are used; Finally, the air pressure is input into the air bags through the gas pump device and the electronic control air pressure valve, and whether the smart deflector (1) has been deformed into the required curvature is judged according to the feedback pressure information, so that the function of the smart deflector is realized.

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