CN110103645A - A kind of safety device and control method of automotive tire burst - Google Patents
A kind of safety device and control method of automotive tire burst Download PDFInfo
- Publication number
- CN110103645A CN110103645A CN201910449003.6A CN201910449003A CN110103645A CN 110103645 A CN110103645 A CN 110103645A CN 201910449003 A CN201910449003 A CN 201910449003A CN 110103645 A CN110103645 A CN 110103645A
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- Prior art keywords
- tire
- pressure
- gas generator
- air bag
- wheel hub
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Classifications
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- 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
- B60C17/02—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor utilising additional inflatable supports which become load-supporting in emergency inflated or expanded in emergency only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/1755—Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Air Bags (AREA)
Abstract
The invention provides the safety device and control method of a kind of automotive tire burst, and a kind of safety device of automotive tire burst includes crash sensor, gas generator, air bag, device for monitoring tyre pressure, linked system of blowing out and controller；The crash sensor is set to the inside of automobile tire and connect with gas generator；The gas generator is firework type gas generator, connected along the symmetrically arranged double-stage air generator of air bag excircle including two；The air bag is set in the excircle of wheel hub, and the space constituted between fillable full automobile tire and wheel hub is unfolded after inflation；The invention is when vehicle generation is blown out, it can support and blow out, can keep blowing out dynamic balance stability in wheel driving process, realize that automobile flat tire signal and vehicle ESP link by controller simultaneously, make body gesture is kept after vehicle flat tire to continue to sail a distance, guarantee driver's driving safety.
Description
Technical field
The invention belongs to the safety device and control method of automotive field, more particularly, to a kind of automotive tire burst
Safety device and control method.
Background technique
As highway is got on the car more and more, summer temperature is gradually risen, and is influenced to hold very much by factors such as weather, tire pressures
Easily blow out.According to incompletely statistics, on highway 42% unexpected traffic accident be as high-speed tire explosion and caused by, and when
Speed is in 160 kilometers or more the generation high-speed tire explosion death rates close to 100%.High-speed tire explosion has become freeway traffic contingency
" number one killer ", wherein since motor turning lags after blowing out, driver can not make in time correct response be blow out it is final
Evolve into the basic reason of traffic accident tragedy.
One of an important factor for tire safety is influence driving safety is easily caused seriously once blowing out under steam
Traffic accident.Although there is trouble-proof tire on the market, applicable vehicle is limited and expensive and traveling texture is bad, mesh
Before need the safety device of automotive tire burst a kind of, above-mentioned traffic accident is reduced or avoided.
Summary of the invention
It, can be in view of this, the invention is directed to the safety device and control method of a kind of automotive tire burst
Holding is blown out dynamic balance stability in wheel driving process, at the same can make to keep after vehicle flat tire body gesture continue sail one section away from
From guarantee driver's driving safety.
In order to achieve the above objectives, the technical solution of the invention is achieved in that
A kind of safety device of automotive tire burst, including crash sensor, gas generator, air bag, tire pressure prison
Survey device, linked system of blowing out and controller；
The crash sensor is set to the inside of automobile tire and connect with gas generator；The gas generator,
It is connected along the symmetrically arranged double-stage air generator of air bag excircle including two for firework type gas generator；Institute
Air bag is stated, the excircle of wheel hub is set in, the space constituted between fillable full automobile tire and wheel hub is unfolded after inflation；
The device for monitoring tyre pressure, including pressure sensor, the pressure sensor are set to the excircle side wall of wheel hub；Institute
State linked system of blowing out, including ESP body electronics systems stabilisation；The information input terminal connection tire pressure monitoring dress of the controller
It sets, the signal output end of controller connects gas generator, linked system of blowing out.
It further, further include dynamic balancing supporting wheel hub, dynamic balancing supporting wheel hub is integrally in circular ring shape, dynamic balancing support wheel
Hub is two, and the sidewall inner wall along automobile tire is arranged, and is symmetrically arranged in air bag two sides, and inner circle is set in wheel
The tyre surface inner wall of hub, outer circle and automobile tire abuts against.
Further, the dynamic balancing supporting wheel hub is made of rubber and synthetic fibers.
Further, the air bag is integrally in tire shape, and the inner circle side wall of air bag is connect with wheel hub fastening,
The outer circle side wall for the air bag being unfolded after inflation and the tyre surface inner wall of automobile tire abut against.
Further, the air bag is made of butyl rubber.
Further, the controller includes central processing unit, memory and wireless communication module, wireless communication module
Pass through wireless network connection device for monitoring tyre pressure, gas generator, linked system of blowing out.
A kind of control method of the safety device of automotive tire burst, includes the following steps,
Step 1: starting gas generator to substitute by crash sensor when tyre explosion occurring in running car
Capsule inflation carries out dynamic balancing support to automobile flat tire by the air bag after inflation；
Step 2: controller acquires the pressure signal of automobile tire internal gas by pressure sensor；
Step 3: controller is compared according to the pressure signal with preset first pressure reference value, and according to than
Compared with result to linked system transmission starting linkage signal of blowing out, to start the ESP body electronics systems stabilisation for linked system of blowing out；
Step 4: controller is compared according to the pressure signal with preset second pressure reference value, and according to than
Starting inflation signal is transmitted to gas generator compared with result, to start gas generator to airbag inflated.
Dynamic balancing support is carried out to automobile tire when blowing out to more further improve, a kind of automotive tire burst
The control method of safety device, includes the following steps,
Step 1: starting gas generator to substitute by crash sensor when tyre explosion occurring in running car
Capsule inflation, by inflation after air bag and dynamic balancing supporting wheel hub to automobile tire carry out dynamic balancing support；
Step 2: controller acquires the pressure signal of automobile tire internal gas by pressure sensor；
Step 3: controller is compared according to the pressure signal with preset first pressure reference value, and according to than
Compared with result to linked system transmission starting linkage signal of blowing out, to start the ESP body electronics stability series for linked system of blowing out
System；
Step 4: controller is compared according to the pressure signal with preset second pressure reference value, and according to than
Starting inflation signal is transmitted to gas generator compared with result, to start gas generator to airbag inflated.
More further, the first pressure reference value is set according to normal tire pressure minimum, the second pressure ginseng
Value is examined according to the design of pressure of tire when vehicle flat tire, the first pressure reference value is referred to more than or equal to second pressure
Value.
Compared with the existing technology, a kind of safety device and control method of automotive tire burst described in the invention,
It has the advantage that
(1) pass through when air bag described in a kind of safety device of automotive tire burst of the invention is blown out in vehicle
Crash sensor starting gas generator is filled with rapidly gas, can support and blow out, and can keep wheels travel of blowing out
Dynamic balance stability in the process, while realizing that automobile flat tire signal and vehicle ESP link by controller, after making vehicle flat tire, protect
It holds body gesture and continues and sail a distance, guarantee driver's driving safety；It has the advantage that and passes through compared with prior art
Crash sensor starting gas generator, which is filled with rapidly air supporting, to be risen and blows out and realize dynamic balance stability, is realized in wheel of blowing out dynamic
On the basis of balance and stability, by controller start ESP body electronics systems stabilisation, keep body gesture continue sail one section away from
From；It avoids in the prior art due to blowing out, wheel loses dynamic balance stability, motor turning lag, and driver can not do in time
Correct response out finally evolves into traffic accident tragedy.
(2) the invention passes through the air bag after inflation and dynamic balancing supporting wheel hub to automobile flat tire progress dynamic balancing
Support, further improves the dynamic balance stability in wheel driving process of blowing out.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide to further understand the invention, present invention wound
The illustrative embodiments and their description made are used to explain the present invention creation, do not constitute the improper restriction to the invention.?
In attached drawing:
Fig. 1 is the overall structure diagram of the invention embodiment；
Fig. 2 is the side structure schematic diagram of the invention embodiment；
Fig. 3 is the partial enlarged view of the invention embodiment；
Fig. 4 is dynamic balancing supporting wheel hub structural schematic diagram described in the invention embodiment；
Fig. 5 is the flow chart of the invention control method.
Description of symbols:
1- pressure sensor；2- crash sensor；3- double-stage air generator；4- automobile tire；5- dynamic balancing support wheel
Hub；6- air bag；7- wheel hub；8- blows out linked system；9- controller；The tyre surface of 201- automobile tire；202- automobile tire
Sidewall.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the invention can
To be combined with each other.The present invention will be described in detail below with reference to the accompanying drawings and embodiments creates.
A kind of safety device of automotive tire burst, as shown in Figure 1, 2, including crash sensor 2, gas generator, peace
Full air bag 6, device for monitoring tyre pressure, linked system of blowing out 8 and controller 9；
The crash sensor 2 is set to the inside of automobile tire 4 and connect with gas generator；The gas occurs
Device is firework type gas generator, connected along the symmetrically arranged double-stage air generator of 6 excircle of air bag including two
3；The air bag 6, is set in the excircle of wheel hub 7, and structure between fillable full automobile tire 4 and wheel hub 7 is unfolded after inflation
At space；
The device for monitoring tyre pressure, including pressure sensor 1, the pressure sensor 1 are set to the outer circumferential sides of wheel hub 7
Wall；The linked system 8 of blowing out, including ESP body electronics systems stabilisation；The information input terminal of the controller 9 connects tire pressure
The signal output end of monitoring device, controller 9 connects gas generator, linked system of blowing out 8.
It further include dynamic balancing supporting wheel hub 5 as shown in Fig. 1,3,4, whole dynamic balancing supporting wheel hub 5 is in circular ring shape, is moved flat
The supporting wheel hub 5 that weighs is two, is arranged along 202 inner wall of the sidewall of automobile tire, and be symmetrically arranged in 6 two sides of air bag,
Its inner circle is set in wheel hub 7, and 201 inner wall of tyre surface of outer circle and automobile tire abuts against；
The dynamic balancing supporting wheel hub 5 is made of rubber and synthetic fibers.
As shown in Figure 2,3, the air bag whole 6 is in tire shape, and the inner circle side wall and wheel hub 7 of air bag 6 are tight
It is solidly connected, the outer circle side wall for the air bag 6 being unfolded after inflation and 201 inner wall of tyre surface of automobile tire abut against.
The air bag 6 is made of butyl rubber.
The controller 9 includes central processing unit, memory and wireless communication module, and wireless communication module passes through wireless
It is connected to the network device for monitoring tyre pressure, gas generator, linked system of blowing out.
As shown in figure 5, a kind of control method of automotive tire burst, includes the following steps,
Step 1: starting gas generator to substitute by crash sensor when tyre explosion occurring in running car
Capsule inflation carries out dynamic balancing support to automobile flat tire by the air bag after inflation；
Step 2: controller acquires the pressure signal of automobile tire internal gas by pressure sensor；
Step 3: controller is compared according to the pressure signal with preset first pressure reference value, and according to than
Compared with result to linked system transmission starting linkage signal of blowing out, to start the ESP body electronics stability series for linked system of blowing out
System；
Step 4: controller is compared according to the pressure signal with preset second pressure reference value, and according to than
Starting inflation signal is transmitted to gas generator compared with result, to start gas generator to airbag inflated.
Step 3: in step 4 controller by by pressure signal respectively with first pressure reference value and second pressure
Reference value is compared, and the ESP body electronics stability series for starting linked system of blowing out are executed according to specific pressure signal difference
System and/or starting gas generator are to airbag inflated, to realize that starting ESP body electronics is steady when automotive tire burst
Determine system；When automobile tire is when being less than or equal to normal tire pressure minimum, i.e., tire pressure of automobile tire is insufficient or tire is leaked slowly
When, only start gas generator to airbag inflated, it is not necessary to start ESP body electronics systems stabilisation.
A kind of another embodiment of the control method of the safety device of automotive tire burst, includes the following steps,
Step 1: starting gas generator to substitute by crash sensor when tyre explosion occurring in running car
Capsule inflation, by inflation after air bag and dynamic balancing supporting wheel hub to automobile tire carry out dynamic balancing support；
Step 2: controller acquires the pressure signal of automobile tire internal gas by pressure sensor；
Step 3: controller is compared according to the pressure signal with preset first pressure reference value, and according to than
Compared with result to linked system transmission starting linkage signal of blowing out, to start the ESP body electronics stability series for linked system of blowing out
System；
Step 4: controller is compared according to the pressure signal with preset second pressure reference value, and according to than
Starting inflation signal is transmitted to gas generator compared with result, to start gas generator to airbag inflated.
The first pressure reference value is set according to normal tire pressure minimum, and the second pressure reference value is quick-fried according to vehicle
The design of pressure of tire when tire, the first pressure reference value are greater than or equal to second pressure reference value.
Described Step 3: controller with first pressure reference value, second by pressing pressure signal respectively in step 4
Power reference value is compared, and the ESP body electronics stability series for starting linked system of blowing out are executed according to specific pressure signal difference
System and/or starting gas generator are to airbag inflated, to realize that starting ESP body electronics is steady when automotive tire burst
Determine system；When automobile tire is when being less than or equal to normal tire pressure minimum, i.e., tire pressure of automobile tire is insufficient or tire is leaked slowly
When, only start gas generator to airbag inflated, it is not necessary to start ESP body electronics systems stabilisation.
The invention it should be further noted that:
ESP body electronics systems stabilisation shown in the present invention, i.e. body electronics systems stabilisation (Electronic
Stability Program, abbreviation ESP), ESP system is really a kind of traction control system, with other polling power controlling systems
System compares, and ESP not only controls driving wheel, and controllable driven wheel.Such as the excessive situation of steering that rear wheel drive truck often occurs,
Rear-wheel is out of control at this time and whipping, and will the stop front-wheel in slow outside of ESP stablizes car；When turning to very few, in order to correct tracking
Direction, ESP can then stop slow inner rear wheel, to correct driving direction.ESP system is by control unit and rotation direction sensor (monitoring side
To the steering angle of disk), the wheel detector speed of each wheel (monitor rotation), (monitoring car body is around vertical for sideslip sensor
The state of axis rotation), the composition such as the lateral acceleration sensor centrifugal force of monitoring when automobile turning ().Control unit passes through
The signal of these sensors judges the operating status of vehicle, and then issues control instruction.And ESP then can be detected and be divided
Analysis vehicle condition and the mistake for correcting driving, prevent trouble before it happens.ESP is especially sensitive to oversteering or understeer, such as automobile exists
Road turn left when sliding oversteering (turning is too anxious) when can generate whipping to the right, sensor feels that sliding will brake rapidly
Off-front wheel makes its restore adhesive force, generates a kind of opposite torque and is maintained at automobile on original lane.
Crash sensor of the present invention is also referred to as impact strength sensor, becomes for acceleration when detecting collision
Change, and collision alarm is transmitted to gas generator, the trigger signal as gas generator；According to the difference of structure, collision is passed
Sensor can also be divided into electromechanical crash sensor, electronic type crash sensor and mechanical crash sensor.
Gas generator of the present invention includes using sodium azide for the single stage version of gas-forming agent and using new
The double-stage air generator of type gas generant solids, the gas of the storage of generation are heated in a flash, make the gas of pressurization
Burning is filled in air bag to generate bulk gas；There are many patterns for double-stage air generator, it is, in general, that " twin-stage "
Gas generator is set there are two igniter (Initiators), selectively generates different amounts of gas in different time sections；Root
Gas type, boosting-type gas generator can also be stored using twin-stage according to wheel gauge gas with various generator.
Controller shown in the present invention includes combinational logic control device and microprogram control unit, and two kinds of controllers respectively possess some good points
And weakness.Combinational logic control device design trouble, structure is complicated, once design is completed, cannot modify or expand again, but it
Speed is fast；Microprogram control unit design is convenient, and structure is simple, and modification or expansion are all convenient, modifies the function of a machine instruction,
Corresponding microprogram need to only be rearranged.
A kind of safety device of automotive tire burst, its working principle is that:
When automotive tire burst, device for monitoring tyre pressure detects the variable quantity for temporal pressure of blowing out, and in time feeds back information
To controller, controller transmits enabling signal, the ESP body electronics systems stabilisation for linked system of blowing out to linked system of blowing out
Timely processing is made to vehicle balance；Crash sensor detection judges the signal that wheel hub and tire are hit when automobile is blown out,
Starting gas generator in time；Gas generator generates gas to airbag inflated when igniting igniting agent by igniter, make
Air bag instantaneous expansion, air bag is full of the space between wheel hub and automobile tire, to realize that air bag supports
Automobile flat tire；It realizes that automobile flat tire signal and vehicle ESP link by controller, after making vehicle flat tire, keeps body gesture continuous
A distance is travelled, guarantees driver's driving safety.
A kind of control method of automotive tire burst, its working principle is that:
In tyre explosion, the changing value of tire pressure moment is detected by device for monitoring tyre pressure, crash sensor triggers gas
Generator is mounted on the air bag moment gassy of wheel hub internal circular surfaces, supports the rubber tyre blown out, pass through control
Device realizes that automobile flat tire signal and vehicle ESP link, and controls body gesture, restores tire running again, thus be effectively reduced or
After avoiding tyre explosion, wheel occurs to hit guardrail or even overturn due to deformations of tyre, and the danger of car crash.
Under normal vehicle operation state, when crash sensor detection tire pressure is stablized, the ignition of gas generator will not be triggered
Device；When blowing out tire moment, crash sensor detects that tire pressure changing value moment increases, and touches the ignition of gas generator
Air bag moment is full of air by device, gas generator, similar tube is formed, after blowing out using air bag
Tire is propped up rapidly, with dynamic balance stability in the wheel driving process that keeps blowing out, recycles the ESP body electronics of automobile itself steady
Determine system, enable the vehicle to smoothly travel, until vehicle is steadily stopped, reaches and be effectively reduced or avoid tyre explosion
Afterwards, wheel occurs to hit guardrail or even overturn due to squeegee action, and the danger of car crash.
The foregoing is merely the preferred embodiments of the invention, are not intended to limit the invention creation, all at this
Within the spirit and principle of innovation and creation, any modification, equivalent replacement, improvement and so on should be included in the invention
Protection scope within.
Claims (9)
1. a kind of safety device of automotive tire burst, it is characterised in that: including crash sensor, gas generator, substitute
Capsule, device for monitoring tyre pressure, linked system of blowing out and controller；
The crash sensor is set to the inside of automobile tire and connect with gas generator；The gas generator is cigarette
Igniting type gas generator, it is connected along the symmetrically arranged double-stage air generator of air bag excircle including two；The peace
Full air bag is set in the excircle of wheel hub, and the space constituted between fillable full automobile tire and wheel hub is unfolded after inflation；
The device for monitoring tyre pressure, including pressure sensor, the pressure sensor are set to the excircle side wall of wheel hub；It is described quick-fried
Tire linked system, including ESP body electronics systems stabilisation；The information input terminal of the controller passes through connection tire pressure monitoring dress
It sets, the signal output end of controller connects gas generator, linked system of blowing out.
2. a kind of safety device of automotive tire burst according to claim 1, it is characterised in that: further include dynamic balancing branch
Wheel hub is supportted, dynamic balancing supporting wheel hub is integrally in circular ring shape, and dynamic balancing supporting wheel hub is two, and the sidewall inner wall along automobile tire is set
It sets, and is symmetrically arranged in air bag two sides, inner circle is set in wheel hub, the tyre surface inner wall phase of outer circle and automobile tire
It abuts.
3. a kind of safety device of automotive tire burst according to claim 2, it is characterised in that: the dynamic balancing support
Wheel hub is made of rubber and synthetic fibers.
4. a kind of safety device of automotive tire burst according to claim 1, it is characterised in that: the air bag is whole
Body is in tire shape, and the inner circle side wall of air bag is connect with wheel hub fastening, the outer circle side wall for the air bag being unfolded after inflation
It is abutted against with the tyre surface inner wall of automobile tire.
5. a kind of safety device of automotive tire burst according to claim 1, it is characterised in that: the air bag by
Butyl rubber is made.
6. a kind of safety device of automotive tire burst according to claim 1, it is characterised in that: the controller includes
Central processing unit, memory and wireless communication module, wireless communication module pass through wireless network connection device for monitoring tyre pressure, gas
Body generator, linked system of blowing out.
7. a kind of control method of the safety device of automotive tire burst according to claim 1, it is characterised in that: including
Following steps,
Step 1: starting gas generator when tyre explosion occurring in running car by crash sensor and being filled to air bag
Gas carries out dynamic balancing support to automobile flat tire by the air bag after inflation；
Step 2: controller acquires the pressure signal of automobile tire internal gas by pressure sensor；
Step 3: controller is compared according to the pressure signal with preset first pressure reference value, and tied according to comparing
Fruit is to linked system transmission starting linkage signal of blowing out, to start the ESP body electronics systems stabilisation for linked system of blowing out；
Step 4: controller is compared according to the pressure signal with preset second pressure reference value, and tied according to comparing
Fruit transmits starting inflation signal to gas generator, to start gas generator to airbag inflated.
8. a kind of control method of the safety device of automotive tire burst according to claim 2, it is characterised in that: including
Following steps,
Step 1: starting gas generator when tyre explosion occurring in running car by crash sensor and being filled to air bag
Gas, by inflation after air bag and dynamic balancing supporting wheel hub to automobile tire carry out dynamic balancing support；
Step 2: controller acquires the pressure signal of automobile tire internal gas by pressure sensor；
Step 3: controller is compared according to the pressure signal with preset first pressure reference value, and tied according to comparing
Fruit is to linked system transmission starting linkage signal of blowing out, to start the ESP body electronics systems stabilisation for linked system of blowing out；
Step 4: controller is compared according to the pressure signal with preset second pressure reference value, and tied according to comparing
Fruit transmits starting inflation signal to gas generator, to start gas generator to airbag inflated.
9. a kind of control method of the safety device of automotive tire burst according to claim 7 or 8 any claims,
It is characterized by: the first pressure reference value is set according to normal tire pressure minimum, the second pressure reference value is according to vehicle
The design of pressure of tire when blowing out, the first pressure reference value are greater than or equal to second pressure reference value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910449003.6A CN110103645A (en) | 2019-05-28 | 2019-05-28 | A kind of safety device and control method of automotive tire burst |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910449003.6A CN110103645A (en) | 2019-05-28 | 2019-05-28 | A kind of safety device and control method of automotive tire burst |
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| CN110103645A true CN110103645A (en) | 2019-08-09 |
Family
ID=67492487
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| CN201910449003.6A Pending CN110103645A (en) | 2019-05-28 | 2019-05-28 | A kind of safety device and control method of automotive tire burst |
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| CN112606632A (en) * | 2021-01-22 | 2021-04-06 | 大赛璐安全技术(江苏)有限公司 | Tire burst emergency automatic inflation tire device and method thereof |
| CN113022223A (en) * | 2021-03-31 | 2021-06-25 | 黄河交通学院 | Automobile tire burst emergency safety system and control method thereof |
| CN115266826A (en) * | 2022-09-26 | 2022-11-01 | 江铃汽车股份有限公司 | Flexible gas generator performance testing device and method and vehicle |
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