CN119078412A - Tire system, tire system control method and vehicle - Google Patents
Tire system, tire system control method and vehicle Download PDFInfo
- Publication number
- CN119078412A CN119078412A CN202310656869.0A CN202310656869A CN119078412A CN 119078412 A CN119078412 A CN 119078412A CN 202310656869 A CN202310656869 A CN 202310656869A CN 119078412 A CN119078412 A CN 119078412A
- Authority
- CN
- China
- Prior art keywords
- tire
- cavity
- vehicle
- inflation
- cavity units
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C17/00—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
- B60C17/01—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional inflatable supports which become load-supporting in emergency
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention provides a tire system, a control method of the tire system and a vehicle, wherein the tire system comprises a tire, a monitoring module, a control module and an inflation and deflation module, the tire comprises a wheel shaft, a wheel hub, a spoke, a wheel rim and a tire body, the tire body comprises a first cavity and a second cavity, a plurality of partition walls which are distributed at intervals are arranged in the second cavity so as to form a plurality of cavity units which are distributed in the circumferential direction and the axial direction of the tire and can be inflated and deflated independently, the monitoring module is used for acquiring scene information of the current running of the vehicle and running information of the vehicle and sending the scene information and the running information to the control module, the control module generates a control instruction according to the received scene information and the running information and sends the control instruction to the inflation and deflation module, and the inflation and deflation module controls part of the cavity units to be inflated and deflated according to the received control instruction so that the tire enters a target state. The shock absorbing effect of the tire is effectively improved, the shock of the vehicle is reduced, and the user experience is improved.
Description
Technical Field
The invention belongs to the technical field of tires, and particularly relates to a tire system, a control method of the tire system and a vehicle.
Background
The tyre is used as one of important components of the vehicle, and has the main functions of supporting the weight of the vehicle, keeping the adhesion between the wheels and the road surface, reducing and absorbing the vibration and impact force of the vehicle in the running process, and the like, so that the running safety, the control stability and the comfort are ensured.
As a direct contact part between a vehicle and the ground, the good shock absorption effect of the tire can avoid the problem of early damage of the vehicle parts caused by severe shock, and can improve the riding comfort of passengers. However, the conventional common tire can bear a part of impact energy, but can only account for 10% -15% of the shock absorption system, when the vehicle encounters an uneven road surface, the vehicle mainly utilizes the spring shock absorber to absorb the energy of the impact and vibration of the road surface, and the shock absorption effect of the tire is poor. In addition, when the pneumatic tire used in the existing vehicle is punctured or burst, the vehicle cannot normally run, and a slipping or even out-of-control phenomenon occurs, so that serious driving safety problems can be caused.
Disclosure of Invention
The invention aims to solve the problems that when the pneumatic tire of the vehicle in the prior art is punctured or burst, the vehicle cannot normally run, slipping and even out of control occur, serious driving safety problems are caused, and the shock absorption effect is poor when the vehicle passes over uneven road surfaces.
In order to solve the problems, the embodiment of the invention discloses a tire system which comprises a tire, a monitoring module, a control module and an inflation and deflation module, wherein the tire comprises a wheel shaft, a wheel hub, spokes, a rim and a tire body which are sequentially arranged from inside to outside in the radial direction of the tire, the tire body comprises an outer wall, two end parts which are respectively connected with two ends of the outer wall, and annular partition walls which are respectively connected with the two end parts, the tire body is sleeved on the rim through the two end parts, the annular partition walls are positioned between the outer wall and the rim in the radial direction of the tire, the annular partition walls and the two end parts of the tire body surround to form a first cavity, the annular partition walls, the outer wall and the two end parts of the tire body surround to form a second cavity, a plurality of partition walls which are distributed at intervals are arranged in the second cavity to form a plurality of cavity units which are distributed in the circumferential direction and the axial direction of the tire and can be inflated and deflated independently, the monitoring module is used for acquiring the current running scene information of the vehicle and the running information of the vehicle and sending the scene information and the running information to the control module, the control module generates a control command to the control module according to the received scene information and the running information, the control command to the running command and the control command to send the control command to the control module to the inflation and deflation command to the control module to take part to control the inflation and deflation.
By adopting the technical scheme, the monitoring module, the control module and the inflation and deflation module are arranged in the tire system of the vehicle, so that the tire system can control partial cavity units in a plurality of cavity units in the tire body of the tire to be inflated and deflated as required according to specific scene information of running of the vehicle and running information of the vehicle, and then the state of the tire is changed, so that the tire enters a target state which is more suitable for the current running scene of the vehicle, the shock absorption effect of the tire is effectively improved, the loss of shock and impact force of the vehicle to vehicle parts is reduced, the durability of the vehicle is improved, and the user experience and riding comfort of the user are improved.
Further, since the second cavity of the tire comprises a plurality of cavity units which are distributed in the circumferential direction and the axial direction of the tire and can be inflated and deflated independently, even if the tire is pricked or burst, the corresponding damaged cavity units cannot be used, and the rest cavity units and the first cavity can be used normally, so that the running safety of the vehicle is ensured.
According to another specific embodiment of the invention, the tyre system disclosed by the embodiment of the invention comprises an air pump, an air charging pipeline, a pressure relief valve and a plurality of electromagnetic valves, wherein one end of the air charging pipeline is connected with the air pump, the other end of the air charging pipeline extends into the inner cavity of the first cavity, the electromagnetic valves are arranged on the annular partition wall and correspond to the cavity units one by one, each electromagnetic valve in the electromagnetic valves can enable the inner cavity of the corresponding cavity unit in the second cavity to be communicated or not communicated with the inner cavity of the first cavity so as to control the corresponding cavity unit to charge and discharge air, the air charging and discharging module controls part of the cavity units in the cavity units to charge and discharge air according to the control instruction, the air charging and discharging module controls the electromagnetic valve corresponding to the part of the cavity units to be opened through the air charging pipeline, or the air charging and discharging module controls the electromagnetic valve corresponding to be opened according to the control instruction, and controls the pressure relief valve to release air through the pressure relief valve.
By adopting the technical scheme, the air pump, the air charging pipeline, the pressure relief valve and the electromagnetic valves are arranged on the air charging and discharging module, the electromagnetic valves are arranged on the annular partition wall and correspond to the cavity units one by one, and each electromagnetic valve in the electromagnetic valves can enable the inner cavity of the corresponding cavity unit in the second cavity to be communicated or not communicated with the inner cavity of the first cavity so as to control the corresponding cavity unit to charge and discharge air. The electromagnetic valve can respond to the control instruction rapidly and rapidly, so that the conversion of the state that the inner cavity of the cavity unit is communicated or not communicated with the inner cavity of the first cavity is more rapid, and the air pump, the air charging pipeline and the pressure relief valve are also more beneficial to controlling the process of charging and discharging the cavity unit.
According to another specific embodiment of the invention, the tyre system disclosed by the embodiment of the invention is characterized in that the air pump is fixedly arranged on the wheel shaft and/or the wheel hub, the air charging pipeline is fixedly arranged on the wheel disc, the other end of the air charging pipeline is connected with the rim of the first cavity, and the pressure relief valve is fixedly arranged on the rim of the first cavity, so that the inner cavity of the first cavity is communicated or not communicated with the outside of the tyre.
By adopting the technical scheme, the mounting structure of the tire system is more compact, and the mounting space is saved.
According to another specific embodiment of the invention, the tyre system disclosed by the embodiment of the invention further comprises an air channel control valve, wherein the air channel control valve is arranged on the air charging pipeline and used for controlling the on-off of the air charging pipeline.
By adopting the technical scheme, the gas circuit control valve is used for controlling the on-off of the gas charging pipeline, so that the process of charging and discharging the cavity unit can be better controlled.
According to another specific embodiment of the invention, the tire system disclosed by the embodiment of the invention comprises a collecting unit, a control module and a control unit, wherein the collecting unit is used for obtaining point cloud data and running information corresponding to scene information and sending the point cloud data to the processing unit and sending the running information to the calculating unit, the processing unit is used for processing the point cloud data to obtain target point cloud and sending the target point cloud to the calculating unit, the calculating unit obtains road surface information of running of a vehicle according to the target point cloud and calculates and obtains partial cavity units needing to be inflated and deflated in a plurality of cavity units and inflation quantity or deflation quantity of the partial cavity units according to the road surface information and the running information, the information of the partial cavity units is sent to the control unit, and the control unit generates control instructions according to the inflation quantity or the deflation quantity of the partial cavity units and the information of the partial cavity units.
The invention also provides a control method of the tire system, which is used for controlling the tire system, and comprises the steps of obtaining the current running scene information of the vehicle and the running information of the vehicle; and according to the control instruction, controlling part of the cavity units to perform inflation and deflation so as to enable the tire to enter a target state.
By adopting the technical scheme, according to the specific scene information of the vehicle running and the running information of the vehicle, partial cavity units in the tire body of the tire can be controlled to be inflated and deflated as required, so that the state of the tire is changed, the tire is enabled to enter a target state which is more suitable for the current running scene of the vehicle, the shock absorption effect of the tire is effectively improved, the loss of the vibration and impact force of the vehicle to the vehicle parts is reduced, the durability of the vehicle is improved, and the user experience and the riding comfort of the user are improved.
According to another specific embodiment of the invention, the control method of the tire system disclosed by the embodiment of the invention comprises the steps of generating a control instruction according to scene information and driving information if the scene information is a pit in front of a vehicle, controlling part of cavity units to be inflated and deflated according to the control instruction so as to enable the tire to enter a target state, and calculating the positions of part of cavity units in the pit on the tire according to the depth of the pit and the driving information when the vehicle passes through the pit and the inflation quantity required when the deformation quantity of the part of cavity units is consistent with the depth of the pit, generating the control instruction according to the positions of the part of cavity units on the tire and the inflation quantity of the part of cavity units according to the inflation quantity in the control instruction, and controlling the part of cavity units on the tire according to the positions of the part of cavity units in the control instruction so as to enable the part of cavity units of the tire to be raised relative to the surface of the tire and enter the target state.
By adopting the technical scheme, when the vehicle passes through the pit, the partial cavity unit corresponding to the pit in the tire can be controlled to be inflated, so that the partial cavity unit of the tire is raised relative to the surface of the tire, and the deformation quantity of the raised partial cavity unit is consistent with the depth of the pit. When the vehicle passes through the pit, the protruding part of the tire is just positioned in the pit, the position of the vehicle body in the height direction cannot generate obvious change, the shock absorption effect of the tire is effectively improved, the loss of the vibration and impact force of the vehicle to the vehicle parts is reduced, the durability of the vehicle is improved, and the user experience and the riding comfort of the user are improved.
According to another specific embodiment of the invention, the control method of the tire system disclosed by the embodiment of the invention comprises the steps of generating a control instruction according to scene information and running information if the scene information is a bulge in front of a vehicle, controlling part of cavity units to be inflated and deflated according to the control instruction so as to enable the tire to enter a target state, and calculating the positions of the part of cavity units on the tire when the vehicle passes through the bulge according to the height of the bulge and the running information if the height of the bulge is larger than a second threshold value, and the deflation amount required when the deformation amount of the part of cavity units is consistent with the height of the bulge, generating the control instruction according to the positions of the part of cavity units on the tire and the deflation amount of the part of cavity units according to the deflation amount, and controlling the part of cavity units to be deflated according to the positions of the part of cavity units on the tire in the control instruction so as to enable the part of cavity units of the tire to be sunken relative to the surface of the tire and enter the target state.
By adopting the technical scheme, when the vehicle passes through the bulge, the partial cavity unit corresponding to the bulge in the tire can be controlled to be deflated, so that the partial cavity unit of the tire is sunken relative to the surface of the tire, and the deformation quantity of the sunken partial cavity unit is consistent with the height of the bulge. When the vehicle passes through the bulge, the sunken part of the tire is just positioned on the bulge, the position of the vehicle body in the height direction cannot generate obvious change, the shock absorption effect of the tire is effectively increased, the loss of the shock and impact force of the vehicle to the vehicle parts is reduced, the durability of the vehicle is improved, and the user experience and the riding comfort of the user are improved.
According to another specific embodiment of the invention, the control method of the tire system disclosed by the embodiment of the invention comprises the steps of generating a control instruction according to scene information and running information if the scene information is an inclined road surface, controlling part of the cavity units to be inflated and deflated according to the control instruction so that the tire enters a target state, calculating the position of the part of the cavity units positioned at the lower part of the inclined road surface on the tire when a vehicle passes through the inclined road surface according to the inclination angle of the inclined road surface and the running information if the inclination angle of the inclined road surface is larger than a third threshold value, and generating a control instruction according to the position of the part of the cavity units on the tire and the inflation amount of the part of the cavity units in the control instruction so that the part of the cavity units of the tire are raised relative to the surface of the tire and enter the target state when the deformation amount of the part of the cavity units is consistent with the inclination height of the inclined road surface.
By adopting the technical scheme, when the vehicle passes through the inclined pavement, the partial cavity units corresponding to the lower parts of the inclined pavement in the tires can be controlled to be inflated, so that the deformation of the partial cavity units is consistent with the inclination height of the inclined pavement, the inclination degree of the vehicle body can be reduced when the vehicle passes through the inclined pavement, and the user experience and riding comfort of the user are improved.
According to another embodiment of the present invention, the method for controlling a tire system according to the embodiment of the present invention controls the plurality of cavity units to be deflated at intervals so that the surface of the tire is in a concave-convex shape and enters a target state if the scene information is rainy or snowy weather.
By adopting the technical scheme, if the vehicle runs in rainy and snowy days, the plurality of cavity units are controlled to be deflated at intervals, so that the surface of the tire is in an uneven shape, the friction force on the surface of the tire is increased, the adhesive force between the tire and the ground is enhanced, and the running safety of the vehicle is ensured.
According to another embodiment of the present invention, the control method of the tire system according to the embodiment of the present invention further includes controlling the tire to return to the original state if it is determined that the vehicle passes through the driving scene corresponding to the scene information in the target state.
By adopting the technical scheme, after the vehicle passes through the driving scene corresponding to the scene information in the target state, the tire is controlled to return to the original state, so that the vehicle can ensure the running stability of the vehicle in the whole journey, and the user experience and the riding comfort of the user are improved.
The invention also provides a vehicle comprising a tyre system as described above.
The beneficial effects of the invention are as follows:
By adopting the tire system and the corresponding control method of the tire system, the monitoring module, the control module and the inflation and deflation module are arranged in the tire system of the vehicle, so that the tire system can control partial cavity units in a plurality of cavity units in a tire body of the tire to be inflated and deflated according to the specific scene information of the vehicle driving and the driving information of the vehicle in real time, and further change the state of the tire, so that the tire enters a target state which is more suitable for the current driving scene of the vehicle, the shock absorption effect of the tire is effectively improved, the loss of shock and impact force of the vehicle to the vehicle parts is reduced, the durability of the vehicle is improved, and the user experience and the riding comfort of a user are improved.
Further, since the second cavity of the tire comprises a plurality of cavity units which are distributed in the circumferential direction and the axial direction of the tire and can be inflated and deflated independently, even if the tire is pricked or burst, the corresponding damaged cavity units cannot be used, and the rest cavity units and the first cavity can be used normally, so that the running safety of the vehicle is ensured.
Drawings
FIG. 1 is a block schematic diagram of a tire system provided in embodiment 1 of the present invention;
FIG. 2 is a schematic view showing the structure of a tire in the tire system according to embodiment 1 of the present invention;
FIG. 3 is a cross-sectional view of A-A of FIG. 2;
FIG. 4 is a cross-sectional view of B-B of FIG. 2;
FIG. 5 is another block schematic diagram of the tire system provided in embodiment 1 of the present invention;
FIG. 6 is a flow chart of a control method of the tire system according to embodiment 2 of the present invention;
FIG. 7 is a schematic diagram showing the deformation of a tire when passing through a dimpled road surface in a control method of a tire system according to embodiment 2 of the present invention;
FIG. 8 is a schematic flow chart of the tire passing through the dimpled road surface in the control method of the tire system according to embodiment 2 of the present invention;
FIG. 9 is a schematic diagram showing the deformation of a tire when passing through a raised road surface in the control method of the tire system according to embodiment 2 of the present invention;
FIG. 10 is a schematic flow chart of the tire passing through a raised road surface in the control method of the tire system according to embodiment 2 of the present invention;
fig. 11 is a schematic diagram showing deformation of a tire when passing through an inclined road surface in a control method of a tire system according to embodiment 2 of the present invention;
fig. 12 is a schematic flow chart of a tire passing through an inclined road surface in the control method of the tire system according to embodiment 2 of the present invention;
fig. 13 is a schematic diagram showing deformation of a tire in the circumferential direction when a vehicle is running in rainy and snowy weather in the control method of the tire system provided in embodiment 2 of the present invention;
fig. 14 is a schematic diagram showing deformation of a tire in an axial direction when a vehicle runs in rainy and snowy weather in the control method of the tire system provided in embodiment 2 of the present invention.
Reference numerals illustrate:
10, a tire system;
100 parts of tires, 101 parts of wheel shafts, 102 parts of hubs, 103 parts of spokes, 104 parts of rims, 105 parts of carcasses, 1051 parts of outer walls, 1052 parts of end parts, 1053 parts of annular partition walls, 106 parts of first cavities, 107 parts of second cavities, 1071 parts of partition walls and 1072 parts of cavity units;
200, a monitoring module;
300, a control module;
400 parts of inflation and deflation modules, 401 parts of air pumps, 402 parts of inflation pipelines, 403 parts of pressure relief valves and 404 parts of electromagnetic valves.
Detailed Description
Example 1
In order to solve the problems that when a tire is punctured or blown out, the vehicle cannot normally run, slipping and even out of control occur, so that serious driving safety problems are caused, and when the vehicle passes over uneven road surfaces, the shock absorbing effect is poor.
Next, the structure and advantages of the tire system provided by the present invention will be described in detail with reference to fig. 1 to 5.
As shown in fig. 1, the tire system 10 provided by the present invention includes a tire 100, a monitoring module 200, a control module 300, and an inflation/deflation module 400.
Specifically, as shown in fig. 2 to 4, the tire 100 includes a wheel shaft 101, a hub 102, spokes 103, a rim 104, and a carcass 105, which are disposed in this order from inside to outside in the radial direction of the tire 100. The carcass 105 includes an outer wall 1051, two end portions 1052 respectively connected to both ends of the outer wall 1051, and annular partition walls 1053 respectively connected to both ends of the two end portions 1052, the carcass 105 is fitted over the rim 104 through the two end portions 1052, the annular partition walls 1053 are located between the outer wall 1051 and the rim 104 in the radial direction of the tire 100, the rim 104, the annular partition walls 1053 of the carcass 105 and the two end portions 1052 surround to form a first cavity 106, the annular partition walls 1053, the outer wall 1051 and the two end portions 1052 of the carcass 105 surround to form a second cavity 107, and a plurality of partition walls 1071 are provided in the second cavity 107 at intervals to form a plurality of cavity units 1072 which are distributed in the circumferential direction and the axial direction of the tire 100 and can be inflated and deflated individually.
The monitoring module 200 is configured to obtain scene information of a current running of the vehicle and running information of the vehicle, and send the scene information and the running information to the control module 300.
The control module 300 generates a control instruction according to the received scene information and the running information, and sends the control instruction to the inflation/deflation module 400, where the control instruction is used to control the inflation/deflation of part of the cavity units 1072 in the plurality of cavity units 1072.
The inflation/deflation module 400 controls the partial chamber unit 1072 to inflate/deflate according to the received control instruction, so that the tire 100 enters the target state.
According to the tire system 10 provided by the invention, the monitoring module 200, the control module 300 and the inflation and deflation module 400 are arranged in the tire system 10 of the vehicle, so that the tire system 10 can control the inflation and deflation of part of the cavity units 1072 in the plurality of cavity units 1072 in the tire body 105 of the tire 100 according to specific scene information of the vehicle and the running information of the vehicle in real time, and further change the state of the tire 100, so that the tire 100 enters a target state which is more suitable for the current running scene of the vehicle, the shock absorption effect of the tire 100 is effectively improved, the loss of shock and impact force of the vehicle on parts of the vehicle is reduced, the durability of the vehicle is improved, and the user experience and riding comfort of a user are improved.
Further, since the second cavity 107 of the tire 100 includes the plurality of cavity units 1072 which are distributed in the circumferential direction and the axial direction of the tire 100 and can be inflated and deflated independently, even if the tire is punctured or the tire is burst, only the corresponding damaged cavity unit 1072 cannot be used, and the remaining cavity units 1072 and the first cavity 106 can be normally used, so that the running safety of the vehicle is ensured.
In a specific embodiment, as shown in fig. 2-4, the inflation and deflation module 400 includes an air pump 401, an inflation line 402, a pressure relief valve 403, and a plurality of solenoid valves 404, wherein one end of the inflation line 402 (the lower end of the inflation line 402 shown in fig. 4) is connected to the air pump 401, and the other end (the upper end of the inflation line 402 shown in fig. 4) extends into the inner cavity of the first cavity 106. The plurality of electromagnetic valves 404 are disposed on the annular partition 1053 and are in one-to-one correspondence with the plurality of cavity units 1072, and each electromagnetic valve 404 of the plurality of electromagnetic valves 404 can enable or disable the inner cavity of the corresponding cavity unit 1072 in the second cavity 107 from being communicated with the inner cavity of the first cavity 106 so as to control the corresponding cavity unit 1072 to be inflated or deflated.
And the inflation/deflation module 400 controls the partial cavity units 1072 of the plurality of cavity units 1072 to inflate/deflate according to the control instruction, including:
The inflation/deflation module 400 controls the opening of the electromagnetic valve 404 corresponding to the partial cavity unit 1072 according to the control instruction, and the air pump 401 inflates the partial cavity unit 1072 through the inflation pipeline 402, or the inflation/deflation module 400 controls the opening of the electromagnetic valve 404 corresponding to the partial cavity unit 1072 and controls the opening of the pressure release valve 403 according to the control instruction, and the partial cavity unit 1072 deflates through the pressure release valve 403.
By arranging the air pump 401, the air charging pipeline 402, the pressure release valve 403 and the plurality of electromagnetic valves 404 on the air charging/discharging module 400, the plurality of electromagnetic valves 404 are arranged on the annular partition wall 1053 and are in one-to-one correspondence with the plurality of cavity units 1072, and each electromagnetic valve 404 in the plurality of electromagnetic valves 404 can enable the inner cavity of the corresponding cavity unit 1072 in the second cavity 107 to be communicated with or not communicated with the inner cavity of the first cavity 106 so as to control the corresponding cavity unit 1072 to charge and discharge air. The electromagnetic valve 404 can rapidly and rapidly respond to the control instruction, so that the conversion of the state that the inner cavity of the cavity unit 1072 is communicated or not communicated with the inner cavity of the first cavity 106 is more rapid, and the process of controlling the cavity unit 1072 to be inflated and deflated is also facilitated by arranging the air pump 401, the inflation pipeline 402 and the pressure release valve 403.
In a specific embodiment, the air pump 401 is fixedly arranged on the axle 101 and/or the hub 102, for example the air pump 401 may be integrally arranged on the axle 101 and/or the hub 102. The inflation line 402 is fixedly provided to the spoke 103, and the other end of the inflation line 402 (the upper end of the inflation line 402 shown in fig. 4) is connected to the rim 104 of the first chamber 106. The pressure release valve 403 is fixedly arranged on the rim 104 of the first cavity 106, and the inner cavity of the first cavity 106 can be communicated or not communicated with the outside of the tire 100, so that the installation structure of the tire system 10 is more compact, and the installation space is saved.
In a specific embodiment, the inflation/deflation module 400 further includes an air circuit control valve (not shown in the figure), where the air circuit control valve is disposed on the inflation pipeline 402, and the specific setting position can be set as required, so as to control the on/off of the inflation pipeline 402. The inflation and deflation processes of the cavity unit 1072 can be better controlled by controlling the on-off of the inflation pipeline 402 through the gas circuit control valve.
In a specific embodiment, as shown in fig. 5, the monitoring module 200 includes an acquisition unit, and the control module 300 includes a processing unit, a calculation unit, and a control unit. The acquisition unit can be a laser radar, a camera and the like which are arranged on the vehicle body and can acquire a new running scene of the vehicle, and the processing unit, the computing unit and the control unit can be integrally arranged in the whole vehicle controller or the vehicle-mounted computer.
The acquisition unit is used for acquiring the point cloud data and the running information corresponding to the scene information, sending the point cloud data to the processing unit and sending the running information to the calculation unit.
The processing unit is used for processing the point cloud data, obtaining the target point cloud and sending the target point cloud to the computing unit.
The calculation unit obtains road surface information of vehicle running according to the target point cloud, calculates and obtains partial cavity units 1072 needing to be inflated and deflated in the plurality of cavity units 1072 and inflation amount or deflation amount of the partial cavity units 1072 according to the road surface information and the running information, and sends the inflation amount or deflation amount of the partial cavity units 1072 and information of the partial cavity units 1072 to the control unit. The control unit generates a control instruction according to the inflation or deflation amount of the partial chamber unit 1072 and the information of the partial chamber unit 1072.
The tire system 10 provided by the invention can also be called an adaptive tire system, the shape of the tire 100 can be changed by inflating and deflating in real time according to the actual condition of a road surface, and the axle center of the tire 100 is always kept on the same horizontal plane in the running process, so that the shock absorption effect of the tire 100 is enhanced, the loss of shock and impact force to vehicle parts is reduced, the durability of the vehicle is improved, and meanwhile, the riding comfort of passengers can be ensured.
Further, the carcass 105 of the tire 100 is composed of multiple working cavities (i.e. multiple cavity units 1072), the second cavity 107 is in direct contact with the ground, when the puncture by a sharp object occurs, the second cavity 107 will leak air, at this time, the electromagnetic valve 404 between each cavity unit 1072 of the first cavity 106 and the second cavity 107 is closed, and the first cavity 106 can still work normally, so as to ensure stability and safety in the running process of the motor vehicle under the condition of tire burst.
When driving in mud, snow or other scenes, each cavity unit 1072 of the second cavity 107 of the tire 100 can be inflated and deflated independently to make the surface of the tire 100 take on uneven shape, so as to increase the friction force on the surface of the tire 100 and enhance the adhesion between the tire 100 and the ground.
Example 2
The present invention also provides a control method of a tire system for controlling the tire system according to embodiment 1, as shown in fig. 6, comprising the steps of:
s100, acquiring scene information of current running of the vehicle and running information of the vehicle.
And S200, generating a control instruction according to the scene information and the driving information, wherein the control instruction is used for controlling part of the cavity units to be inflated and deflated.
And S300, controlling part of the cavity units to be inflated and deflated according to the control instruction so as to enable the tire to enter a target state.
The scene information of the vehicle running may be environmental information around the vehicle, including information of road surface condition, weather condition, surrounding obstacles, etc., and the running information of the vehicle may be speed, direction, etc. of the vehicle running.
During running of the vehicle, a monitoring module (such as a laser radar) in front of the vehicle monitors scene information of the running direction in real time, and fits the area data according to a predicted running track of the vehicle tire to determine road surface information, weather information and the like, wherein the predicted running track of the vehicle tire can be determined according to the running speed of the tire and the turning direction of the steering wheel.
By adopting the control method of the tire system, part of cavity units in a plurality of cavity units in the tire body of the tire can be controlled to be inflated and deflated according to the needs according to the specific scene information of the vehicle running and the running information of the vehicle, so that the state of the tire is changed, the tire is enabled to enter a target state which is more suitable for the current running scene of the vehicle, the shock absorption effect of the tire is effectively improved, the loss of vibration and impact force of the vehicle to vehicle parts is reduced, the durability of the vehicle is improved, and the user experience and riding comfort of the user are improved.
In one specific implementation, if the scene information is that the front of the vehicle is a pit; generating a control instruction according to the scene information and the running information, controlling part of the cavity units to be inflated and deflated according to the control instruction so that the tire enters a target state, wherein the control instruction is generated according to the scene information and the running information, if the depth of the pit is larger than a first threshold value, calculating the positions of the part of the cavity units on the tire, which are positioned in the pit, of the plurality of cavity units when a vehicle passes through the pit according to the depth of the pit and the running information, and the inflation amount required when the deformation amount of the part of the cavity units is consistent with the depth of the pit, and controlling the part of the cavity units to be inflated according to the positions of the part of the cavity units on the tire and the inflation amount of the part of the cavity units in the control instruction so that the part of the cavity units of the tire are raised relative to the surface of the tire and enter the target state.
In order to clearly describe the deformation process of the tire when passing through the dimpled road surface, the second chamber unit of the tire is numbered as shown in fig. 7, and the specific deformation process of the tire when the vehicle passes through the dimpled road surface will be described in detail.
Specifically, the tire state is not deformed when the vehicle is traveling on a flat road surface.
During running of the vehicle, scene information around the vehicle and running information of the vehicle are acquired in real time through the monitoring module, if the front road surface is detected to be a low-lying road surface (namely, a pit road surface), whether the depth of the pit is larger than a first threshold value is judged, if the depth of the pit is larger than the first threshold value, the vehicle is proved to feel obvious vibration when passing through the pit. At this time, according to the depth of the pit, the distance between the pit and the vehicle and the driving information, the position of a part of the cavity units located in the pit on the tire when the vehicle passes through the pit and the inflation amount required when the deformation amount of the part of the cavity units is consistent with the depth of the pit are calculated, and a control instruction is generated according to the position of the part of the cavity units on the tire and the inflation amount of the part of the cavity units. For example, as shown in fig. 7, when the vehicle runs over the pit, the cavity units numbered 1-7 on the tire are located in the pit, and when the deformation amount of the cavity units reaches the state shown in fig. 7, the deformation amount generated by the cavity units numbered 1-7 is consistent with the pit depth.
Next, the solenoid valves and the air path control valves corresponding to the cavity units numbered 1-7 are controlled to be opened according to the positions (namely, the information of part of the cavity units) of the cavity units numbered 1-7 on the tire in the control instruction, and the air is inflated according to the inflation amount, so that the cavity units numbered 1-7 on the tire are raised relative to the surface of the tire, and the tire enters a target state as shown in fig. 7. And then closing the air passage control valve to control the vehicle to run.
When the tire runs above the pit pavement, the cavity units with the numbers 1-7 on the tire can fill the pit of the pavement, so that the axle center height of the tire is kept unchanged, after passing through the pit pavement, a pressure relief valve and an electromagnetic valve are opened, air is exhausted to enable the cavity units with the numbers 1-7 to restore to the original tire pressure, then the pressure relief valve and the electromagnetic valve are closed, and then the normal running of the vehicle is controlled.
In order to ensure accuracy of information collected during the running process of the vehicle, as shown in fig. 8, in a specific embodiment, if the front road surface is detected as a pit road surface, the control method includes the steps of:
S100', acquiring the road surface information in front of the vehicle in real time through a laser radar installed in front of the vehicle, and sending the point cloud information of the road surface in front of the vehicle to a processing unit.
And S200', the processing unit extracts the point cloud data range according to the predicted running track of the tire of the vehicle and sends the data range to the computing unit.
And S300', the calculation unit carries out pavement fitting on the selected point cloud data range, and determines the plane position of the space where the pavement is located, and determines the position, the aggregate size and other data of the pit area on the pavement, from the vehicle.
S400', the position of a cavity unit where the second cavity of the tire is contacted with the ground when the monitored distance between the pit pavement and the vehicle and the speed of the vehicle reach the pit pavement are predicted, and second cavity unit contact information is sent to the control unit.
S500', the control unit opens the electromagnetic valve corresponding to the second cavity of the tire contacted with the pit on the ground, opens the air passage control valve, closes the air passage control valve when the second cavity starts to be inflated to be consistent with the pit in height, and closes the pressure release valve and the electromagnetic valve when the original tire pressure of the second cavity is restored after passing through the pit pavement.
When the vehicle passes through the pit, the partial cavity unit corresponding to the pit in the tire can be controlled to be inflated, so that the partial cavity unit of the tire is raised relative to the surface of the tire, and the deformation amount of the raised partial cavity unit is consistent with the depth of the pit. When the vehicle passes through the pit, the protruding part of the tire is just positioned in the pit, the position of the vehicle body in the height direction cannot generate obvious change, the shock absorption effect of the tire is effectively improved, the loss of the vibration and impact force of the vehicle to the vehicle parts is reduced, the durability of the vehicle is improved, and the user experience and the riding comfort of the user are improved.
In a specific embodiment, if the scene information is that the front of the vehicle is convex; generating a control instruction according to the scene information and the running information, controlling part of the cavity units to be inflated and deflated according to the control instruction so as to enable the tire to enter a target state, wherein the control instruction is generated according to the scene information and the running information, and controlling part of the cavity units to be deflated according to the position of the part of the cavity units on the tire and the deflating amount of the part of the cavity units according to the deflating amount in the control instruction so as to enable the part of the cavity units of the tire to be sunken relative to the surface of the tire and enter the target state according to the position of the part of the cavity units on the tire and the deflating amount of the part of the cavity units when the vehicle passes through the bulge according to the height of the bulge and the running information.
As above, in order to clearly describe the deformation process of the tire when passing through the raised road surface, the second cavity unit of the tire is numbered as shown in fig. 9, and the specific deformation process of the tire when encountering the raised road surface will be described in detail below.
In the running process of the vehicle, scene information around the vehicle and running information of the vehicle are acquired in real time through the monitoring module, if the front road surface is detected to be a raised road surface, whether the height of the raised road surface is larger than a second threshold value is judged (if the height of the raised road surface is larger than the second threshold value, the fact that the vehicle passes through the raised road surface is indicated, and obvious vibration is felt). At this time, according to the height of the protrusion, the distance between the protrusion and the vehicle, and the traveling information, the position of the part of the cavity units located in the protrusion on the tire when the vehicle passes the protrusion, and the amount of air release required when the deformation amount of the part of the cavity units is consistent with the height of the protrusion are calculated, and according to the position of the part of the cavity units on the tire and the amount of air release of the part of the cavity units, a control instruction is generated. For example, as shown in fig. 9, when the vehicle runs over the protrusions, the cavity units with numbers 1-6 on the tire are located on the protrusions, and when the deformation amount of the cavity units reaches the state shown in fig. 9, the deformation amount generated by the cavity units with numbers 1-6 is consistent with the height of the protrusions.
Then, the electromagnetic valve and the pressure relief valve corresponding to the cavity unit with the number 1-6 are controlled according to the position of the cavity unit with the number 1-6 on the tire in the control instruction, so that the cavity unit with the number 1-6 of the tire is deflated, the tire pressure of the cavity unit with the number 1-6 is reduced, deformation can occur along with the extrusion of the road surface, and when the deformation amount of the cavity unit with the number 1-6 is the same as the height of the bulge, the pressure relief valve is closed, and the vehicle is controlled to run.
When the tire runs to the raised road surface, the concave parts generated by extrusion of the cavity units with the numbers 1-6 on the tire can be covered on the raised road surface, so that the axle center height of the tire is kept unchanged, after the tire passes through the raised road surface, the air channel control valve is opened, the air pump is used for inflating the cavity units with the numbers 1-6 on the second cavity of the tire through the inflation pipeline until the original tire pressure is consistent, the air channel control valve and the electromagnetic valve are closed, and then the normal running of the vehicle is controlled.
In one embodiment, as shown in fig. 10, if it is detected that the front road surface is a raised road surface, the control method includes the steps of:
s100', acquiring the road surface information in front of the vehicle in real time through a laser radar installed in front of the vehicle, and sending the point cloud information of the road surface in front of the vehicle to a processing unit.
S200', the processing unit extracts the point cloud data range according to the predicted running track of the tire of the vehicle and sends the data range to the computing unit.
And S300', the calculation unit carries out pavement fitting on the selected point cloud data range, and determines the plane position of the space where the pavement is located, and determines the position, the aggregate size and other data of the raised area on the pavement, from the vehicle.
S400', the position of the cavity unit where the second cavity of the tire is contacted with the ground when the vehicle reaches the raised pavement is predicted according to the monitored distance between the raised pavement and the vehicle and the speed of the vehicle, and the contact information of the second cavity unit is sent to the control unit.
S500', the control unit opens the electromagnetic valve and the pressure relief valve corresponding to the second cavity of the tire contacted with the raised place on the ground, the tire starts to deflate, the tire pressure of the second cavity is reduced and can deform along with the shape of the road surface, when the deformation of the second cavity can reach the raised height, the pressure relief valve is closed, the air path control valve is opened after the raised road surface passes through, and the tire pressure of the second cavity is inflated to be consistent with the original tire pressure.
When the vehicle passes through the bulge, the partial cavity unit corresponding to the bulge in the tire can be controlled to be deflated, so that the partial cavity unit of the tire is sunken relative to the surface of the tire, and the deformation quantity of the sunken partial cavity unit is consistent with the height of the bulge. When the vehicle passes through the bulge, the sunken part of the tire is just positioned on the bulge, the position of the vehicle body in the height direction cannot generate obvious change, the shock absorption effect of the tire is effectively increased, the loss of the shock and impact force of the vehicle to the vehicle parts is reduced, the durability of the vehicle is improved, and the user experience and the riding comfort of the user are improved.
In one embodiment, if the scene information is an inclined road surface; generating a control instruction according to the scene information and the running information, controlling part of the cavity units to be inflated and deflated according to the control instruction so that the tire enters a target state, wherein the control instruction is generated according to the position of the part of the cavity units on the tire, which is positioned at the lower part of the inclined pavement, and the required inflation amount when the deformation amount of the part of the cavity units is consistent with the inclination height of the inclined pavement, when the vehicle passes through the inclined pavement, according to the inclination angle of the inclined pavement and the running information, the part of the cavity units are computed according to the inclination angle of the inclined pavement and the inclination angle of the inclined pavement, and the inflation amount of the part of the cavity units is controlled according to the position of the part of the cavity units on the tire in the control instruction so that the part of the cavity units of the tire protrudes relative to the surface of the tire and enters the target state.
As above, in order to clearly describe the deformation process of the tire when passing through the inclined road surface, the second chamber unit of the tire is numbered as shown in fig. 11, and the specific deformation process of the tire when encountering the inclined road surface will be described in detail.
When the vehicle is in the driving process and the monitoring module monitors that the road surface ahead is inclined, judging whether the inclination degree information (namely the inclination angle) of the road surface is larger than a third threshold value or not (if the inclination angle is larger than the third threshold value, the user can feel obvious uncomfortable feeling when the vehicle passes through the inclined road surface). At this time, when the vehicle passes through the inclined road surface, the position of a part of the cavity units positioned at the lower part of the inclined road surface on the tire is calculated according to the inclination degree of the road surface, the distance between the inclined road surface and the vehicle and the driving information, and the inflation quantity required when the deformation quantity of the part of the cavity units is consistent with the inclination height of the inclined road surface, the control instruction is generated according to the position of the part of the cavity units on the tire and the inflation quantity of the part of the cavity units. For example, as shown in fig. 11, after calculation, when the vehicle runs on an inclined road surface, the cavity units with the numbers 1-5 on the tire need to be inflated, and when the deformation amount of the cavity units reaches the state shown in fig. 11 and the inclined height can be adapted, the electromagnetic valve of the cavity unit with the number 1-5 of the second cavity is opened at the moment, the air passage control valve is opened to inflate the tire until the deformation amount of the cavity units with the numbers 1-5 reaches the requirement, the air passage control valve is closed, after the inclined road surface is used, the pressure relief valve is opened, the second cavity is restored to the original tire pressure, and the pressure relief valve and the electromagnetic valve are closed.
Specific data of the first threshold, the second threshold and the third threshold can be set by a person skilled in the art according to the actual situation.
The cavity units numbered 1 to 5 correspond to the cavity units located at the same positions in the cross section on the entire circumference.
The air charge distribution of the cavity units of the vehicle tyre numbers 1-5 is mainly determined according to monitoring information of road surfaces, such as the height of a monitored inclined plane and the contact position of the cavity units of the tyre numbers 1-5 and the road surface in front, the air charge of the cavity units of the tyre numbers 1-5 is different because the heights of the inclined planes are different, when the road surface in front is monitored to be uneven, the electromagnetic valve is opened, the time for closing the electromagnetic valve is determined by the relation between the air charge time and the tyre deformation amount (the air charge amount in unit time can be controlled to be consistent concretely), and the cavity can be determined to meet the requirements of the road surface in front according to the relation between the air charge time and the tyre deformation amount and the height information of the inclined plane.
When the tire meets the inclined road surface, the control unit can charge the unit of the second cavity of the tire according to the inclined angle and the inclined height so as to keep the balance of the tire on the inclined road surface.
In one embodiment, as shown in fig. 12, if the front road surface is detected as an inclined road surface, the control method includes the steps of:
And S10, acquiring road surface information in front of the vehicle in real time through a laser radar arranged in front of the vehicle, and sending the point cloud information of the road surface in front of the vehicle to a processing unit.
And S20, the processing unit extracts the point cloud data range according to the predicted running track of the tire of the vehicle and sends the data range to the computing unit.
And S30, the calculation unit carries out pavement fitting on the selected point cloud data range, and determines the plane position of the space where the pavement is located, and the position, the inclination angle, the height and other information of the vehicle in the inclination area.
And S40, when the inclination degree is larger than a preset value, the position of the cavity unit where the second cavity of the tire is contacted with the ground when the inclination degree reaches the inclined pavement is predicted according to the distance between the monitored inclination area and the vehicle and the speed of the vehicle, and the contact information of the second cavity unit is sent to the control unit.
And S50, the control unit opens a solenoid valve of a second cavity module of the tire, which is in contact with the lower part of the inclined pavement, opens the air passage control valve to inflate the unit, closes the air passage control valve until the height of the unit is consistent with the inclined height, opens the pressure relief valve after passing through the inclined pavement, enables the second cavity to recover to the original tire pressure, and closes the pressure relief valve and the solenoid valve.
When the vehicle passes through the inclined pavement, part of the cavity units corresponding to the lower part of the inclined pavement in the tire can be controlled to be inflated, so that the deformation of the part of the cavity units is consistent with the inclined height of the inclined pavement, the inclination degree of the vehicle body can be reduced when the vehicle passes through the inclined pavement, and the user experience and riding comfort of the user are improved.
In one specific embodiment, if the scene information is rainy or snowy weather, the plurality of cavity units are controlled to be deflated at intervals so that the surface of the tire is in an uneven shape and enters a target state.
Specifically, as shown in fig. 13 and 14, a schematic diagram of the deformation condition of the tire system of the present invention in rainy and snowy weather (may also be mud, snow, etc.). When the tire is on mud land or snow road, the second cavity inter-interval unit is deflated, specifically, the cavity units numbered 1-22 shown in fig. 13 and the cavity units numbered 23-28 shown in fig. 14 can be used, and the second cavity inter-interval unit (1-28 units in the drawing) is opened to discharge the second cell gas so as to change the surface shape of the tire. After the vehicle passes over the rainy and snowy road, the tire is controlled to be inflated, so that the second cavity is restored to the original state.
If the vehicle runs in rainy and snowy weather, the plurality of cavity units are controlled to be deflated at intervals, so that the surface of the tire is in an uneven shape, the friction force on the surface of the tire is increased, the adhesive force between the tire and the ground is enhanced, and the running safety of the vehicle is ensured.
In one embodiment, the control method further includes controlling the tire to return to the original state if it is determined that the vehicle passes through the driving scene corresponding to the scene information in the target state. After the vehicle passes through the driving scene corresponding to the scene information in the target state, the tire is controlled to return to the original state, so that the vehicle can ensure the running stability of the vehicle in the whole journey, and the user experience and the riding comfort of the user are improved.
Example 3
The present invention also provides a vehicle comprising the tire system of embodiment 1.
The vehicle comprising the tire system described in embodiment 1 is provided with the monitoring module, the control module and the inflation and deflation module, so that the tire system can control partial cavity units in a plurality of cavity units in a tire body of the tire to be inflated and deflated according to the specific scene information of the vehicle driving and the driving information of the vehicle in real time, and then change the state of the tire, so that the tire enters a target state which is more suitable for the current driving scene of the vehicle, the shock absorption effect of the tire is effectively improved, the loss of vibration and impact force of the vehicle to vehicle parts is reduced, the durability of the vehicle is improved, and the user experience and the riding comfort of a user are improved.
Further, since the second cavity of the tire comprises a plurality of cavity units which are distributed in the circumferential direction and the axial direction of the tire and can be inflated and deflated independently, even if the tire is pricked or burst, the corresponding damaged cavity units cannot be used, and the rest cavity units and the first cavity can be used normally, so that the running safety of the vehicle is ensured.
The foregoing describes embodiments of the present invention in terms of specific examples, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. While the description of the invention will be described in connection with the preferred embodiments, it is not intended to limit the inventive features to the implementation. Rather, the purpose of the invention described in connection with the embodiments is to cover other alternatives or modifications, which may be extended by the claims based on the invention. The above description will contain numerous specific details in order to provide a thorough understanding of the present invention. The invention may be practiced without these specific details. Furthermore, some specific details are omitted from the description in order to avoid obscuring the invention. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
It should be noted that in this specification, like reference numerals and letters refer to like items in the above-described drawings, and thus once an item is defined in one drawing, no further definition or explanation thereof is necessary in the subsequent drawings.
The terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.
While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a further detailed description of the invention with reference to specific embodiments, and it is not intended to limit the practice of the invention to those descriptions. Various changes in form and detail may be made therein by those skilled in the art, including a few simple inferences or alternatives, without departing from the spirit and scope of the present invention.
Claims (12)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310656869.0A CN119078412A (en) | 2023-06-05 | 2023-06-05 | Tire system, tire system control method and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310656869.0A CN119078412A (en) | 2023-06-05 | 2023-06-05 | Tire system, tire system control method and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119078412A true CN119078412A (en) | 2024-12-06 |
Family
ID=93695609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310656869.0A Pending CN119078412A (en) | 2023-06-05 | 2023-06-05 | Tire system, tire system control method and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN119078412A (en) |
-
2023
- 2023-06-05 CN CN202310656869.0A patent/CN119078412A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9296263B2 (en) | Smart active tyre pressure optimising system | |
| US8562023B2 (en) | Vehicle with pneumatic tire and method for cooling tire in the vehicle | |
| EP3092136B1 (en) | Tyre apparatus | |
| US6733088B2 (en) | Variable-diameter wheel apparatus for motor vehicles | |
| EP2551130A1 (en) | Adjustable tyre pressure system and method | |
| CN110154653B (en) | Automatic inflation and deflation device for vehicle tires and control method thereof | |
| US20030071513A1 (en) | Variable-diameter wheel-and-tire apparatus for motor vehicles | |
| AU2001283952B2 (en) | Method for assessing the endurance of a running flat system | |
| WO2008142679A2 (en) | Tire inflation system | |
| CN109808426A (en) | A vehicle automatic dynamic tire pressure adjustment system | |
| CN211869086U (en) | Driven wheel tire | |
| CN110217056A (en) | A kind of Electric Motor Wheel tire automatic inflatable device of air and its control method | |
| CN119078412A (en) | Tire system, tire system control method and vehicle | |
| EP0323895A1 (en) | Aerodynamic profile tire | |
| US20080093814A1 (en) | Wheel Assembly with Internal Pressure Reservoir and Pressure Fluctuation Warning System | |
| CN209365785U (en) | Anti-puncture protection device for tire | |
| WO2017077304A1 (en) | Device and method for transporting air between an air source of a vehicle and a tyre valve | |
| CN113263873A (en) | Tire assembly and method for improving tire grip | |
| CN113635716A (en) | Tire pressure automatic control method and device and vehicle | |
| CN110422017A (en) | A kind of application method of the explosion-proof tire vehicle wheel device of automotive wheel | |
| RU2086420C1 (en) | Tyre for vehicle running gear | |
| Aravindan et al. | A study on automatic regulation of tire pressure and self-inflating system | |
| CN206983623U (en) | A kind of equilibrated valve and the twins room tire equipped with equilibrated valve | |
| CN205970646U (en) | Rim capable of being provided with double-layer tire and wheel with double-layer tire | |
| CN112319142A (en) | High heat dissipation solid tyre |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |