Automobile tire liquefied gas inflation control method, device and equipment and storage medium

Abstract

The invention provides an automobile tire liquefied gas inflation control method, device and equipment and a storage medium, and the control method comprises the following steps: obtaining the pressure needing to be increased through the tire pressure, and obtaining the needed inflation volume through pressure calculation; according to the principle that the gaseous air mass and the liquid air mass are equal under the same volume, the gaseous air mass needing to be inflated is calculated, and the liquid inflation mass for inflation is obtained through conversion; and air inflation in a liquid state mode is started, and air inflation is stopped when air inflation reaches a set value. According to the invention, liquid inflation is utilized, so that the inflation precision and the inflation efficiency are improved.

Description

Technical Field

[0001] The invention relates to the technical field of tire inflation, and in particular to a method and equipment for controlling the inflation of liquefied gas in automobile tires. Background Art

[0002] In the prior art, the performance of automobiles is getting higher and higher, but ordinary air can no longer meet the needs of high-performance automobiles for tire filling. At present, ordinary air pumps can only compress air into tires through pistons. Ordinary air contains oxygen, which will oxidize the tire during use. At the same time, when the internal energy of the tire increases, oxygen will increase the risk of tire blowout.

[0003] In the prior art, there are some cases of inflation with liquefied gas, but there is no record of relevant data on the amount of inflation, which affects the accuracy of inflation. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a control method and device for controlling the filling amount of liquefied compressed gas based on gas quality, so that the filled liquefied gas can be accurately gasified in the tire to the pressure value required by the tire.

[0005] In order to solve the above technical problems, the technical solutions provided by the present invention are as follows: The method for controlling the inflation of liquefied gas in automobile tires comprises the following steps: obtaining the pressure to be supplemented by the existing pressure or the warning pressure of the tire, and obtaining the relationship coefficient between the pressure and the mass by calculating the ideal gas formula, and then calculating the gas mass according to the pressure to be supplemented; According to the principle that the mass of gaseous and liquid air is equal under the same volume, the mass of gaseous gas that needs to be inflated is calculated, and the mass of liquid gas used for inflation is converted; Start the liquid mode inflation and stop the inflation when the inflation reaches the set value.

[0006] Furthermore, it also includes calculating and deriving the relationship coefficient between pressure and mass, specifically calculating the tire volume V 轮 , the filling mass is m 气 The pressure change value of the car before and after the gas is P 变 ; According to the ideal gas formula (1), it can be known that: pV=nRT(1), where p represents pressure, V represents volume, n represents the amount of gas, T represents thermodynamic temperature, and R is the ideal gas constant; In the above formula, n=m / M; m is mass, M is molar mass; Then pV=mRT / M, then m=pVM / RT. With M / RT as the constant k, we can get the formula (3) for calculating the mass m: m=pVk; (3) Then, the pressure that needs to be replenished is used to form the above P, the volume V of the tire is used to form V, the constant k is obtained through testing and verification, and the mass m of gas that needs to be replenished is calculated.

[0007] Furthermore, when the temperature changes or the gas changes, the verification constant k needs to be recalculated.

[0008] Furthermore, the automobile tire liquefied gas inflation control method is characterized in that the tire volume V is calculated 轮 In the calculation, the volume of the rectangular block formed by cutting the tire is used.

[0009] Furthermore, the automobile tire liquefied gas inflation control method is characterized in that the tire volume V 轮 The calculation formula is as follows: V 轮 = rubber center line length * rubber section width W * rubber height; The tire's section width W, rubber aspect ratio H and wheel diameter r are all obtained through the tire's internal markings, while the rubber height is the product of the rubber aspect ratio H and the rubber's section width W, and the rubber centerline length is obtained based on the wheel diameter.

[0010] Furthermore, the calculation of the rubber centerline length is also included, as follows: Rubber center line length = п*diameter = (2.54*r+WH / 2)*п; At this time, since the diameter unit is inches, it needs to be converted to cm, so you need to multiply the diameter of the wheel by 2.54.

[0011] The present invention also discloses a vehicle tire liquefied gas inflation control device, comprising: An acquisition module is used to obtain the pressure that needs to be supplemented in the automobile tire; A calculation module, for inputting or storing a calculation formula and calculating the mass of gas to be supplemented according to the pressure to be supplemented; The control module is respectively connected to the acquisition module, the calculation module and the gas replenishment module for communication, and controls the gas replenishment of the gas replenishment module according to the calculated gas quality.

[0012] Furthermore, the air replenishing module includes an air tank, a driving mechanism and a connecting pipe, the connecting pipe connects the air tank to the tire, and the driving mechanism drives and controls the start of inflation, the inflation process and the stop of inflation.

[0013] The present invention also discloses an electronic device, comprising a memory and a processor, wherein the memory is used to store one or more computer instructions, wherein the one or more computer instructions are executed by the processor to implement a method for controlling the inflation of liquefied gas in a vehicle tire as described in any one of the above items.

[0014] The present invention also discloses a computer-readable storage medium storing a computer program, wherein the computer program enables a computer to implement a method for controlling the inflation of liquefied gas in a vehicle tire as described in any one of the above items when executed.

[0015] The present invention has the following beneficial effects: The present invention is based on the principle that the mass of gas remains unchanged in liquid and gaseous states, and quantitatively inflates the gas according to the mass of the gas. Compared with an ordinary compression air pump that can only inflate air with compressed air, the gas injected has more selectivity.

[0016] The present invention can accurately control the amount of air injected into the automobile tire, thereby effectively protecting the tire and the gas with excellent performance, so that the automobile tire has more accurate pressure support and better tire protection and exerts greater tire performance.

[0017] The present invention calculates the mass of gas required for different tire inflation pressures according to the formula in the invention according to different models of automobile tires, and then can calculate the tire inflation mass that needs to be input when calculating the tire pressure increase value, and calculate the value according to different tire models, thereby improving accuracy and ensuring safety.

[0018] Every increase of 0.1 bar in tire pressure = 0.00123*(tire width²*tire aspect ratio*wheel size*2.54 / 10000+tire width³*tire aspect ratio² / 10000000). Simply input the corresponding tire model to accurately calculate the mass of gas that needs to be filled in the tire. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of the automobile tire liquefied gas inflation control device provided by the present invention; Figure 2 A schematic diagram of the structure of the automobile tire liquefied gas inflation device provided by the present invention; In the figure: 1. Gas tank base; 2. Motor fixing base; 3. Gear motor cam; 5. Motor and transmission part base; 6. Limit contact switch; 7. Push rod; 8. Main panel; 9. Pressure sensor; 10. Integrated control circuit board; 11. Numerical setting knob; 12. Display panel; 13. Panel sticker; 14. Theme bottom plate; 15. Battery box cover; 16. Type-C power supply port; 17. Tank body. DETAILED DESCRIPTION

[0020] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0021] In this embodiment, a method for controlling the inflation of liquefied gas in automobile tires is mainly provided, and the focus is on the calculation, which includes the following steps: obtaining the pressure to be supplemented through the existing tire pressure or the warning pressure, and calculating and deriving the relationship coefficient between pressure and mass through the ideal gas formula, and then calculating the gas mass according to the pressure to be supplemented; According to the principle that the mass of gaseous and liquid air is equal under the same volume, the mass of gaseous gas that needs to be inflated is calculated, and the mass of liquid gas used for inflation is converted; Start the liquid mode inflation and stop the inflation when the inflation reaches the set value.

[0022] In the prior art, when liquefied gas is filled into a tire and converted into a gaseous state, there is an endothermic gasification process. When the liquefied gas is inflated, there is a problem of gas-liquid coexistence. When the liquefied gas is not completely converted into a gaseous state, the pressure and volume are not in a linear positive proportion. Therefore, using conventional flow or pressure detection, the liquid gas is gasified in a confined space, and the mass is unchanged. Therefore, in this embodiment, a method of controlling the mass of the inflated gas is used to control the pressure of the final tire gas after gasification. Generally, liquefied gas has a critical pressure. When it is higher than this pressure, it is liquid, and when it is lower than this pressure, it is gaseous. The gas thermodynamic formula cannot be used in the liquid state. When in the gaseous state, the gas properties conform to the gas thermodynamic formula like air, and in this embodiment, the gas mass formula of the ideal state is selected to achieve better calculation. In this embodiment, the sealing of liquid transportation is relatively high, and when this method in this embodiment is selected, the inflation process must ensure that there is no leakage. Once there is leakage, it will affect the final inflation effect. In the event of air leakage, it is necessary to wait until inflation is completely completed, measure the final tire pressure, and then recalculate the mass of the liquefied gas filled based on the pressure difference. Continue to replenish while ensuring that there is no air leakage until the predetermined inflation value is reached.

[0023] In this embodiment, the relationship coefficient between pressure and mass is obtained by calculation, specifically, the tire volume V is calculated. 轮 , the filling mass is m 气 The pressure change value of the car obtained before and after the gas is P change; According to the ideal gas formula (1), it can be known that: pV=nRT(1), where p represents pressure, V represents volume, n represents the amount of gas, T represents thermodynamic temperature, and R is the ideal gas constant; In the above formula, n=m / M; m is mass, M is molar mass; Then pV=mRT / M, then m=pVM / RT. With M / RT as the constant k, we can get the formula (3) for calculating the mass m: m=pVk; (3) Then, the pressure that needs to be replenished is used to form the above P, the volume V of the tire is used to form V, the constant k is obtained through testing and verification, and the mass m of gas that needs to be replenished is calculated.

[0024] In this embodiment, the volume of the automobile tire also includes a calculation method, which is as follows: V 轮 = rubber center line length * rubber section width W * rubber height; The tire's section width W, rubber aspect ratio H and wheel diameter r are all obtained through the tire's internal markings, while the rubber height is the product of the rubber aspect ratio H and the rubber's section width W, and the rubber centerline length is obtained based on the wheel diameter.

[0025] In this embodiment, the calculation of the rubber center line length is also included, as follows: Rubber center line length = п*diameter = (2.54*r+WH / 2)*п; At this time, since the diameter unit is inches, it needs to be converted to cm, so you need to multiply the diameter of the wheel by 2.54.

[0026] In actual use, when the temperature changes or the gas changes, the verification constant k needs to be recalculated.

[0027] The total calculated tire volume V 轮 In the calculation, the volume of the rectangular block formed by cutting the tire is used.

[0028] In order to realize the above control method, the present embodiment also includes a vehicle tire liquefied gas inflation control device, including an acquisition module for acquiring the pressure that needs to be supplemented in the vehicle tire, such as a pressure sensor that can be selected to form the acquisition module; a calculation module that inputs or stores a calculation formula and calculates the gas mass that needs to be supplemented according to the pressure that needs to be supplemented; a control module that is respectively connected to the acquisition module, the calculation module and the air replenishment module for communication, and controls the air replenishment module to replenish air according to the calculated gas mass. In the present embodiment, the calculation module and the control module can be implemented as a whole using a controller, and then the calculation formula is stored in the controller, and an input and output unit is provided, so as to facilitate the subsequent control of the air replenishment.

[0029] In actual use, the air replenishment module includes an air tank, a driving mechanism and a connecting pipe, wherein the connecting pipe connects the air tank to the tire, and the driving mechanism drives and controls the start of inflation, the inflation process and the stop of inflation. All of these can be achieved through subsequent assembly.

[0030] This embodiment can also be used in an electronic device, including a memory and a processor, wherein the memory is used to store one or more computer instructions, wherein the one or more computer instructions are executed by the processor to implement the above-mentioned automobile tire liquefied gas inflation control method.

[0031] In this embodiment, a computer-readable storage medium storing a computer program is also included. When the computer is executed by the computer, the above-mentioned method for controlling the inflation of liquefied gas in automobile tires is implemented. In this case, the computer-readable storage medium can be stored in the control unit.

[0032] In this embodiment, a certain automobile tire is taken as an example. In this embodiment, the tire model is specifically 245 / 45R19, which means that the rubber section width is 245mm, the rubber aspect ratio is 45, and then the rubber height H is W*h; then the wheel hub diameter is 19 inches, because inches need to be converted into mm, 1 inch = 25.4mm is selected for conversion.

[0033] Then in this embodiment, the entire rubber center line length = п*diameter = (2.54*r+WH / 2)*п; At this time, since the diameter unit is inches, it needs to be converted to cm, so you need to multiply the diameter of the wheel by 2.54; and for the rubber section width of 245mm, it is 24.5cm.

[0034] By combining the above formula, we can know that cm 3 The volume unit that constitutes the whole is: V 轮 = rubber center line length * rubber section width W * rubber height =(2.54*r+WH / 2)*п*W*WH =2.54r*W 2 *H*п+п*W 3 H 2 / 2; In this embodiment, since the units need to be converted, 245 mm is converted by dividing by 10 to 24.5 cm; and H is the ratio of length to width, and the height of the tire is the width of the tire multiplied by this ratio divided by 100; After conversion, the volume V 轮 =(2.54r*W 2 *H / 10000+r*W 3 H 2 / 20000000)п=(2.54*19*245 2 *45 / 10000+245 3* 45 2 / 20000000)*3.14=12524.6cm 3 ; When testing, after 500g of liquid nitrogen was filled into the tire, the pressure change was 2.8bar. When the formula m=pVk was substituted, the constant obtained was 0.039 when п was not included in the volume calculation. Then multiplying by п, the final ball constant k was 0.00123. For this type of tire, the weight of gas required for each 0.1 bar increase in tire pressure is: 0.00123 (tire width 2 *Rubber aspect ratio*2.54 / 10000+tire width 3 * Width Ratio 2 / 20000000); In another embodiment, the model parameters are: the cross-sectional width of the tire is 215, the aspect ratio (i.e., rubber aspect ratio) is 55, and in the calculation of the hub diameter is 16, the number of grams required to increase a tire by 0.1 bar is 13g. When the current tire pressure is 1.8 and the inflation target is 2.8, the required inflation grams are 133g.

[0035] Refer to the attached Figure 1 As shown, the automobile tire liquefied gas inflation control method, device, equipment and storage medium of the present invention, the whole working principle is: set the inflation gram through the value setting knob 11, and then press the OK key to start the program, the motor 3 rotates to drive the cam 4 to rotate, the cam 4 protrusion lifts the push rod 7, when the push rod reaches the top dead center, the cam pushes the limit switch 6 to stop the motor 3 from rotating and keep the push rod 7 at the top dead center, and continue to push the valve on the gas cylinder to start inflation, the pressure sensor 9 measures the number of grams of gas reduced in the gas cylinder, when the gas gram reduction value in the gas cylinder reaches the preset value during the inflation process, the motor 3 reverses and withdraws the push rod 7 to the bottom dead center through the cam 4, the gas cylinder valve is closed, and the inflation is stopped. During the process, the inflation can be manually stopped by pressing the esc key and the new inflation value can be reset with the knob, and the OK key can be pressed to continue inflation. This device can be powered by 4 AAA batteries, or it can be powered by a 5v power supply using a Type-C cable connected to the Type-C port 16.

[0036] This embodiment also includes a liquefied gas inflation device for automobile tires, such as the patent publication number CN217672576U, which is a tire inflation device using compressed liquefied gas, through which a tank 17 for containing compressed liquefied gas can also be provided with scales on the surface of the tank, and each two scales correspond to a certain amount of compressed liquefied gas, and also includes a press valve, a valve and a connector, and the press valve 12 includes a cylinder cover, a sealing ring, a plunger, a plunger ring, a spring and a cylinder. In use, the press valve is used to inflate the relevant liquid gas.

[0037] In the prior art, ordinary air contains oxygen, which will react with the organic matter in the tire rubber to form oxides after being filled into the tire. In addition, the gas inside the tire has a certain pressure during use, and when it is impacted, it is easy to react violently with the oxides, resulting in a blowout. The device for inflating the tire using compressed liquefied gas uses compressed liquefied gas (for example, nitrogen or tetrafluoroethane and other alkane gases), which is small in size, easy to carry, and can be inflated quickly. It can provide a higher safety pressure for the tire, is energy-saving and environmentally friendly, and is easy to use.

[0038] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A method for controlling the inflation of liquefied gas in automobile tires, characterized in that: The method comprises the following steps: obtaining the pressure to be supplemented by using the existing tire pressure or the warning pressure, and obtaining the relationship coefficient between pressure and mass by calculating the ideal gas formula, and then calculating the gas mass according to the pressure to be supplemented; According to the principle that the mass of gaseous and liquid air is equal under the same volume, the mass of gaseous gas that needs to be inflated is calculated, and the mass of liquid gas used for inflation is converted; Start the liquid mode inflation and stop the inflation when the inflation reaches the set value.

2. The method for controlling the inflation of liquefied gas in automobile tires according to claim 1, characterized in that: It also includes calculating the relationship coefficient between pressure and mass, specifically calculating the tire volume V 轮 , the filling mass is m 气 The pressure change value of the car before and after the gas is P 变 ; According to the ideal gas formula (1), it can be known that: pV=nRT(1), where p represents pressure, V represents volume, n represents the amount of gas, T represents thermodynamic temperature, and R is the ideal gas constant; In the above formula, n=m / M; m is mass, M is molar mass; Then pV=mRT / M, then m=pVM / RT. With M / RT as the constant k, we can get the formula (3) for calculating the mass m: m=pVk; (3) Then, the pressure that needs to be replenished is used to form the above P, the volume V of the tire is used to form V, the constant k is obtained through testing and verification, and the mass m of gas that needs to be replenished is calculated.

3. The method for controlling the inflation of liquefied gas in automobile tires according to claim 2, characterized in that: When the temperature changes or the gas changes, the verification constant k needs to be recalculated.

4. The method for controlling the inflation of liquefied gas in automobile tires according to claim 2, characterized in that: The calculated tire volume V 轮 In the calculation, the volume of the rectangular block formed by cutting the tire is used.

5. The method for controlling the inflation of liquefied gas in automobile tires according to claim 4, characterized in that: The method for controlling the inflation of liquefied gas in automobile tires is characterized in that the tire volume V 轮 The calculation formula is as follows: V 轮 = rubber center line length * rubber section width W * rubber height; The tire's section width W, rubber aspect ratio H and wheel diameter r are all obtained through the tire's internal markings, while the rubber height is the product of the rubber aspect ratio H and the rubber's section width W, and the rubber centerline length is obtained based on the wheel diameter.

6. The method for controlling the inflation of liquefied gas in automobile tires according to claim 5, characterized in that: It also includes the calculation of the rubber centerline length, as follows: Rubber center line length = п*diameter = (2.54*r+WH / 2)*п; At this time, since the diameter unit is inches, it needs to be converted to cm, so you need to multiply the diameter of the wheel by 2.

54.

7. Automobile tire liquefied gas inflation control device, characterized in that: include, An acquisition module is used to obtain the pressure that needs to be supplemented in the automobile tire; A calculation module, for inputting or storing a calculation formula and calculating the mass of gas to be supplemented according to the pressure to be supplemented; The control module is respectively connected to the acquisition module, the calculation module and the gas replenishment module for communication, and controls the gas replenishment of the gas replenishment module according to the calculated gas quality.

8. The automobile tire liquefied gas inflation control device according to claim 7, characterized in that: The air replenishment module includes an air tank, a driving mechanism and a connecting pipe. The connecting pipe connects the air tank to the tire, and the driving mechanism drives and controls the start of inflation, the inflation process and the stop of inflation.

9. An electronic device, characterized in that: It comprises a memory and a processor, wherein the memory is used to store one or more computer instructions, wherein the one or more computer instructions are executed by the processor to implement a vehicle tire liquefied gas inflation control method as described in any one of claims 1 to 6.

10. A computer-readable storage medium storing a computer program, characterized in that: The computer program enables a computer to implement a method for controlling the inflation of liquefied gas in automobile tires according to any one of claims 1 to 6 when the computer is executed.

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