An air bag is a flexible rubber capsule filled with compressed air or water medium; it utilizes the compressibility of air and the fluidity of water to achieve elasticity. Birds have 9 air sacs. It has the function of assisting breathing, reducing body density, reducing friction and heat dissipation between organs. The posterior air sac is connected to the end of the middle bronchus, and the anterior air sac is connected to the abdominal bronchi. Except for the interclavicular air sac, which is single, all are in pairs on the left and right. Basic introduction: Chinese name of airbag: Latin scientific name of airbag: saus, vesicle, bladder, air sac, air vesicle Kingdom: Introduction to the animal kingdom, difference, prototype, safety system, SRS, outside the car, function, principle, distribution function, airbag, quantity ,New product,Application,Structure,Sensor,Use,Open,Shelf life, Introduction Airbags, as an auxiliary configuration for the passive safety of the vehicle body, have attracted increasing attention. When a car collides with an obstacle, it is called a primary collision. When the occupant collides with an interior component of the car, it is called a secondary collision. The airbag quickly opens a gas-filled air cushion after the primary collision and before the secondary collision, causing the occupants to collapse due to inertia. When moving, it "flies on the air cushion" to soften the impact on the occupants and absorb the collision energy, reducing the degree of injury to the occupants. Built-in airbags Differences: Cars The airbags are distributed in three directions: the front of the car (driving and passenger seats), the sides of the front and rear rows of the car, and the roof. The words Supplemental Inflatable Restraint System (SRS) are printed on the container containing the airbag system. The Chinese literal translation should be "Supplemental Inflatable Restraint System". It is designed to reduce the degree of injury suffered by the occupants in a secondary collision due to inertia after a car collision. The air sac is a respiratory system in birds. The respiratory system of birds is very specialized, with a well-developed air sac system connected to the lungs and trachea. The air sac is mainly composed of a single layer of squamous epithelial cells with a small amount of connective tissue and blood vessels. It lacks the function of gas exchange. Birds generally have 9 air sacs, among which the posterior air sacs (abdominal air sac and posterior thoracic air sac) are connected with the bronchi, and the anterior air sacs (cervical air sac, interclavicular air sac and prothoracic air sac) are connected with the abdominal bronchi. Except for the single air bag in the center, they are all paired on the left and right. The air sacs are located between internal organs and chest muscles, and have branches extending into large bone cavities. Distribution Air sacs are widely distributed among the internal organs, bone cavities and certain motor muscles of birds. The existence of air sacs enables birds to develop a unique breathing method - dual respiration, which is significantly different from other terrestrial vertebrates that only inhale oxygen when inhaling. The special structure of the bird's respiratory system is adapted to the high oxygen consumption required for flying life. Air bags are also devices that ensure adequate oxygen supply for birds when they fly. When birds perch, they mainly rely on the movement of the sternum and ribs to change the volume of the chest cavity, causing the expansion and contraction of the lungs and air sacs to complete gas metabolism. When flying, the sternum serves as the starting point of the wing-flailing muscles (pectoralis major and pectoralis minor) and tends to be stable, so it mainly relies on the expansion and contraction of the air bags to assist the lungs in completing breathing. When the wings are raised, the air sacs expand and air is inhaled through the lungs; when the wings are flapped, the air sacs are compressed and the air is discharged through the lungs again. Therefore, the faster birds fly, the more violently they flap their wings, and the faster gas exchange occurs, thus ensuring a sufficient supply of oxygen. Prototype The invention of the airbag originated from a near-miss accident. In 1952, while driving, Hetrick, an American engineer, immediately turned the steering wheel and applied the emergency brake to avoid an obstacle. At the same time, both he and his wife instinctively extended their arms to protect their daughter, who was sitting in the center seat in the front row. Despite the near miss, the self-taught engineer was inspired by it. He thought there must be a protective device that could replace the arms to protect the forward-moving drivers and passengers during emergency braking or collision. He spent two weeks designing a car buffer safety device. The principle is to install an air tank filled with compressed air under the hood. When the car is subject to a frontal collision, the inertial impact force prompts a sliding weight to move towards the car. Move forward to push the air reservoir to quickly inflate the air bag hidden in the center of the steering wheel and next to the dashboard, thereby reducing injuries to people in the car. On August 18, 1953, Hetrick received the patent certificate for the "automobile buffer safety device" issued by the National Patent Office. This was the prototype of the airbag.
The safety system is to protect the safety of the occupants when the car is hit by a side collision or the vehicle rolls over. It is usually installed on the door. When the vehicle is hit by a side collision, the door will be severely deformed, and the side impact may cause injuries to the waist, abdomen, outside of the chest, and arms. Ensure the mobility and escape ability of the body's upper limbs. As the importance of passive safety of the entire vehicle becomes more and more popular, there are more than 30 airbags. Some high-end luxury cars are equipped with two tubular airbags on the neck, knees, and even on both sides of the roof. In case of accidents, When this happens, it can effectively relieve the downforce from the top of the car roof, and when combined with the side air curtains, it can effectively protect the passengers' heads and necks. The knee airbag is located in the front driver's seat. Once deployed, it can effectively protect the waist and lower limbs of rear passengers, thereby also mitigating the forward momentum from a frontal collision. SRS, referred to as SRS, is an auxiliary safety system, which usually appears as an auxiliary safety device for seat belts. Seat belts and airbags are used together. Without seat belts, the safety effect of airbags will be greatly reduced. According to surveys, the use of airbags alone can reduce accident mortality by about 18%, the use of seat belts alone can reduce accident mortality by about 42%, and the use of airbags and seat belts can reduce accident mortality by about 47%. . It can be seen that only the cooperation of the two can reduce the fatality rate in accidents to the greatest extent, and the airbag system will inevitably appear as an auxiliary system for seat belts. When a collision occurs, the seat belt "restrains" the occupants in the seat so that the occupant's body will not hit the steering wheel, instrument panel and windshield, thereby preventing the occupant from secondary collisions; and at the same time, preventing the occupant from rolling over in the vehicle. Being thrown from the seat in a dangerous situation. The protection principle of the airbag is: when the car suffers a certain collision force, the airbag system will trigger a chemical reaction similar to the explosion of a small dose of explosives. The airbag hidden in the car will inflate and pop up in an instant, causing a collision between the occupant's body and the car. The interior equipment plays a paving role before a collision, reducing the impact force on the body, thereby reducing injuries to the occupants. The airbag system is called SRS. Compared with seat belts, the airbag is only an auxiliary protection device. The airbags are made from a rubber-lined specialty fabric, nylon, and are filled with harmless helium gas to operate. The system is activated by a sensor that monitors the speed of the car during a collision and the extent to which the Swift's airbags are reduced. The airbag begins to inflate early in the collision and takes approximately 0.03 seconds to safely inflate. It is important that the airbag inflates very quickly to ensure that the airbag is deployed in time when the passenger's body is restrained by the seat belt and the head is still traveling forward. When the head hits the airbag, the airbag begins to deflate through the pores on the surface of the airbag. The gas is discharged at a certain rate, ensuring that the person's body parts are slowly decelerated. Since airbags can deploy and inflate at a speed of up to 320 km/h, serious injuries may occur if a person's riding posture is incorrect during a collision. Outside the car The outside air bag system is also called the bumper built-in air bag. When a car collides with a pedestrian head-on, the airbags quickly deploy forward and lift to both sides, lifting the hit pedestrian while preventing the pedestrian from falling to both sides. The exterior airbag system is in the development stage. Function Airbags are eye-catching high-tech devices on modern cars. A car steering wheel equipped with an airbag device is usually no different from an ordinary steering wheel. However, once a strong collision occurs at the front of the car, the airbag will instantly "pop" out of the steering wheel and cushion it between the steering wheel and the driver, preventing The driver's head and chest hit a hard object such as the steering wheel or dashboard. Since the introduction of airbags, many lives have been saved. Research shows that when a car equipped with an air bag device encounters a frontal collision, the driver's mortality rate is reduced by 30% for large cars, 11% for medium-sized cars, and 14% for small cars. Principle The airbag is mainly composed of sensors, microprocessors, gas generators and airbags. Sensors and microprocessors are used to determine the degree of crash, transmit and transmit signals; the gas generator generates an ignition action according to the signal instructions, ignites the solid fuel and generates gas to inflate the airbag, causing the airbag to rapidly expand. The airbag capacity is approximately (50-90 )L. At the same time, the air bag is equipped with a safety valve. When it is over-inflated or the pressure in the bag exceeds a certain value, it will automatically release part of the gas to avoid squeezing and injuring passengers. The gas used in airbags is mostly nitrogen or carbon monoxide.
In addition to the airbag on the driver's side, some cars are also equipped with passenger airbags (i.e. dual airbag specifications) in the front row. The airbags used by passengers are similar to those used by drivers, except that the airbags are larger in size and require There is just a little more gas. In addition, some cars are also equipped with side airbags on the side of the seat near the door. Distribution function Airbags Airbags are distributed in three directions in the car: the front (front and passenger seats), the sides (front and rear rows of the car) and the roof. The words Supplemental Inflatable Restraint System (SRS) are printed on the outside of the container equipped with the airbag system. Literally translated into Chinese, it should be "Supplemental Inflatable Restraint System". The English name emphasizes that the airbag is an auxiliary device and should work in conjunction with the seat belt to provide the best protection. It is a pity that this point is ignored in the Chinese name, which can easily lead to misunderstandings among users, thinking that airbags alone can achieve good protection. In fact, if not used in conjunction with seat belts, in some cases, the airbag may cause unnecessary harm to the occupants when deployed. The airbag for the driver's seat is installed in the middle of the steering wheel, and the airbag for the passenger's seat is installed inside the platform directly in front. It can effectively protect the heads and chests of the driver and passenger in the passenger's seat at the moment of an accident. A violent frontal collision will cause significant deformation of the front of the vehicle, and the occupants of the vehicle will swoop forward with this violent inertia, causing collisions with components within the vehicle. In addition, the airbag in the driving position of the vehicle can effectively This prevents the steering wheel from hitting the driver's chest in the event of a collision, thus avoiding fatal injuries. The side airbag system protects the safety of the occupants when the car is hit by a side collision or the vehicle rolls over. It is usually installed on the door. When the vehicle is hit by a side collision, the door will be severely deformed, making it impossible to open the door, and the occupants will be trapped in the car. The airbag can effectively protect the driver and passengers in the car from injuries to the waist, abdomen, outside of the chest, and arms caused by side impacts, ensuring the mobility and escape ability of the body's upper limbs. Quantity As the importance of passive safety of the entire vehicle becomes more and more popular, some high-end luxury cars have as many as 30 airbags. They are equipped with two tubular airbags from the neck, knees, and even on both sides of the roof. The downforce above the roof can be effectively alleviated, and the side air curtains can effectively protect the heads and necks of passengers. The airbag located in the knee part of the front driver's seat can effectively protect the waist and lower limbs of rear passengers and alleviate the forward momentum from a frontal collision. New product: Exterior airbag system is also called bumper-embedded airbag. When a car collides with a pedestrian head-on, the airbags will rapidly expand forward and lift to both sides, lifting the hit pedestrian while preventing the pedestrian from falling to both sides. The exterior airbag system is in the development stage. The air bag is mainly used in the papermaking machinery industry. It is used for stroke adjustment and tension control in correctors, calenders, presses, scrapers, wire sections and other parts. After the air bag is used as a lifting element of the lifting equipment, it can overcome the problem of lifting equipment. The traditional shortcomings are that no maintenance is required, the service life is long, and the operation and replacement are easy. In mechanical vibration isolation, airbags generally adopt bladder, membrane and belt structures. Airbags can be used in various mechanical devices to buffer and absorb vibration, control movement or pressurize. Compared with elastic elements such as steel springs with the same function, air bags have a simple structure, reliable operation, do not require complex parameter calculations and structural design, have no static deflection, are easy to use and maintain, and have a long life. In actual applications, airbags have many uses, such as vibration isolation, shockproof, lifting, clamping and anti-swing, etc. Their usage and quantity depend on the specific equipment. However, there is a unique characteristic that cannot be ignored, that is, it should be equipped with a sufficient air source to maintain the stability of its internal pressure. Structure The airbag system mainly consists of sensors, gas generators, igniters, airbags and control units (ECU). Sensor The sensor is used to detect and judge the impact signal when the car collides, so that the airbag can be deployed in time. Sensors can be divided into two types according to their functions: collision sensors and insurance sensors. The collision sensor is responsible for detecting the intensity of the collision. If the car hits a non-deformable fixed obstacle head-on at a speed of 40KM/H, the collision sensor will act and connect the ground circuit; the insurance sensor, The closing deceleration is slightly smaller and acts as an insurance to prevent accidental expansion due to short circuit of the collision sensor. According to its structure, the sensor can be divided into three types: mechanical, electromechanical and electronic.
The following uses a mechanical sensor (eccentric hammer impact sensor) as an example to illustrate the working principle of the sensor. Mechanical sensors are generally installed between the bumper and fender to sense signals of low-speed collisions. The sensor is installed in a sealed shockproof protection box. Its structure is shown in the figure. When the moving speed of the weight in the sensor is higher than a certain vehicle speed (called TBD vehicle speed), the weight will directly transfer its mechanical energy. It is passed to the initiator to inflate the air bag. Specific working principle: When the car is running normally, the torsion spring 2 sets the weight 3 and the moving contacts 6, 12, and 14 at the top dead center position, and the sensor does not send a trigger signal to the ECU. When the car collides, the inertial force generated by the deceleration overcomes the torsion of the spring and causes the weight to move, driving the contact bridge 5 to rotate, so that the dynamic and static contacts are combined. At this time, the sensor sends a signal to the ECU to turn on Tongliao, and at the same time the safety sensor is also turned on, and the ECU sends a detonation command. Gas generation: The gas generator is also called an inflator. When the igniter detonates the ignition agent, it generates gas to inflate the air bag and expand the air bag. The gas generator is fixed on the airbag bracket with special bolts and nuts, and can only be assembled with special tools. The gas generator consists of an upper cover, a lower cover, an inflator and a metal filter. There are several inflation holes on the upper cover, and there are two types of inflation holes: rectangular holes and round holes. There are mounting holes on the lower cover for mounting the gas generator to the airbag bracket. The upper cover and lower cover are integrated by cold pressing process, and the housing is equipped with aeration agent, filter screen and pointer. The metal filter is placed on the inner surface of the gas generator to filter the slag particles after the aeration agent and ignition agent are burned. Most gas generators use thermal reaction to produce nitrogen gas that is filled into the air bag. At the moment when the igniter detonates the ignition agent, the ignition agent will generate a large amount of heat. When heated, the sodium azide will immediately decompose and release nitrogen gas, which will be filled into the air bag from the inflation hole. Ignitor The igniter is wrapped with aluminum foil and installed in the center of the gas generator. The ignition agent includes detonating explosives and primers, and the lead wires are connected to the airbag connector plug, and the connector is equipped with a short-circuit piece. When the connector plug is unplugged or the plug and connector are not completely combined, the short-circuit piece will short-circuit the two leads to prevent static electricity or misleading electricity from connecting the heating wire circuit and causing the air bag to inflate accidentally. When the ECU issues an ignition command, the heating wire circuit is turned on, and the heating wire quickly red-heats to detonate the detonator. The detonating explosive instantly explodes to generate heat. The temperature and pressure inside the cartridge rise sharply and break through the cartridge, causing the inflatable agent to be thermally decomposed and released. into the air bag. As mentioned before, airbags can be divided into driver-side airbags, passenger-side airbags, rear airbags, side airbags and top airbags according to their layout positions; according to their size, they can be divided into sky-type airbags that protect the entire body and airbags that mainly protect the face. Small face-protecting airbag. The cost of face-protecting airbags is low, but they must be used in conjunction with seat belts to have a protective effect. Since seat belts are commonly used in European cars, small airbags are mostly used in European cars. American cars are designed to use open-type airbags when seat belts are not used. Early airbags were made of nylon fabric coated with polychloroprene. In addition to the unchanged base material, the airbag has two basic design concepts. One is the traditional airbag made of coated fabrics, which controls its cushioning by changing the size of its airway; the other is to use uncoated fabric with a certain breathability to control its cushioning. However, there are strict requirements for its air permeability. The former type is more commonly used, most of which are made of polyamide fabric with good crack-proof performance and coated with polychloroprene inside. ECU ECU is mainly composed of SRS logic module, signal processing circuit, backup power circuit, protection circuit and voltage stabilizing circuit. The insurance sensor is generally made in the SRS control component together with the SRS ECU. (1) SRS logic module. The SRS logic module is mainly used to monitor whether the vehicle's longitudinal deceleration or inertial force reaches the temple value, and to control the igniter in the air bag assembly to detonate the ignition agent. While the car is driving, the ECU continuously receives vehicle speed change signals from the front collision sensor and protective collision sensor, and determines whether a collision has occurred after mathematical calculations and logical judgment. When the judgment result is that a collision has occurred, the software program that controls the ignition is immediately run, and an ignition command is sent to the ignition circuit to detonate the ignition agent. When the ignition agent detonates, it generates a large amount of heat, causing the inflator to thermally decompose and release gas to inflate the SRS. (2) Signal processing circuit. The signal processing circuit is mainly composed of amplifiers and filters, which are used to shape, amplify and filter the sensor signals so that the ECU can receive, identify and process them. (3) Protection circuit and voltage stabilizing circuit.
In order to prevent airbag system components from being damaged, a protection circuit must be set up in the ECU. At the same time, in order to ensure that the airbag system can operate normally when the vehicle power supply voltage changes, the voltage stabilizing circuit must also be set. SRS The SRS warning light is located on the instrument panel. When the ignition switch is turned on, the diagnostic unit performs a self-test on the system. If the SRS warning light lights up for 6 seconds and then goes out, it means that the system is normal. If it still flashes or stays on after 6 seconds, it means that the airbag system is faulty. , indicating that maintenance should be carried out. If the ECU is abnormal and cannot control the SRS warning light, the SRS warning light will display an abnormality under the direct control of other circuits. Use (1) The airbag is only an auxiliary safety system and needs to be used in conjunction with the seat belt. The original intention of designing airbags is to assist in protecting the safety of drivers and passengers under the action of seat belts. However, people tend to separate airbags from seat belts and think that with airbags, seat belts have little effect. Therefore There have been cases where people were injured by airbags without wearing seat belts in frontal collisions. Because the airbag inflates very quickly and the impact at the moment of inflation is also very large, if the driver and passengers do not wear seat belts, the driver will rush towards the uninflated airbag prematurely due to the huge inertia. This will happen. Accident among accidents, the airbag had a negative effect. Therefore, when driving and riding in a car equipped with a front airbag, you must fasten your seat belt. If a frontal collision occurs, the dual protection of the seat belt and the air bag can be fully protected and can be fully exerted. (2) When the car is equipped with a front passenger airbag, children must not be allowed to sit in the front seat or a child seat placed in this position. If the airbag in this position can be turned off manually, this position should be turned off before the child rides. of airbags. Because the explosion of the airbag will cause a certain degree of harm to children, the impact of the front passenger airbag is greater, and its explosive force is beyond the ability of children. (3) Pay attention to the airbag warning light located on the dashboard. Under normal circumstances, when the ignition switch is turned to the "ACC" or "ON" position, the warning light will come on for about 6 seconds, and then go out after self-test. If the warning light stays on, it indicates that the airbag system is faulty and should be repaired. Otherwise, the air bag may not work or may be deployed accidentally. (4) The airbag must be replaced after it explodes. When installing a new airbag, attention must be paid to the fact that the collision sensor installed inside the computer board must be replaced with the computer board, and the one installed outside the computer board must be replaced separately, otherwise it is easy to detonate; because The air bag is used in conjunction with the seat belt, and the seat belt tensioner of the tensioning device must also be replaced. (5) Small pendants and ornaments cannot be hung on the windshield. Otherwise, when the airbag is deployed, the pendants and ornaments are suddenly hit by a violent force and shot toward the occupants like bullets, with disastrous consequences. (6) Do not knock the outer marking area of ??the airbag ***, because the airbag contains a chemical component that is easily detonated by electricity. If it is hit with a certain force, it will easily detonate. (7) Since the air bag inflates rapidly when it pops up, the impact force is extremely large. At this time, if you do not wear the seat belt correctly or sit too close to the air bag, the impact force of the air bag inflation will also affect the personnel. Tens of millions of injuries. Therefore, keep the distance between the steering wheel and the driver greater than 10cm throughout the day, and move the seat as far back as possible. (8) Do not place hard or sharp objects between passengers and the airbags. Otherwise, the strong impact when the airbags explode will also crush them onto people, causing death or injury. (9) Drivers who wear glasses are best to wear safety glasses, because the airbag hitting the glasses will break the glass and cause eyeball and facial injuries. Opening In order to ensure that the airbag opens at the appropriate time, automobile manufacturers have stipulated the conditions for the detonation of the airbag. Only when these conditions are met, the airbag will explode. Although in some traffic accidents, the occupants in the car suffered severe injuries or even life-threatening injuries, and the vehicle was close to being scrapped, the airbag will still not open if the conditions for the airbag to explode are not met. Suitable speed and impact angle are required for airbag deployment. Theoretically, the airbag can only be deployed if the vehicle hits a fixed object at a position approximately 60° to the left and right in front of the vehicle at a speed higher than 30KM/h. The speed mentioned here is not the vehicle speed as we usually understand it, but the speed at which the vehicle collides with a relatively rigid fixed obstacle in the test room. In the actual collision, the air bag must be opened only when the vehicle speed is higher than the test speed.
The main stress-bearing parts of a car when it collides are the bumper and body longitudinal beams. In order to buffer the impact force during a collision, most of the front parts of the car body are designed with a collision buffer zone, and the stiffness of the car body is also uneven. In some accidents, such as when a car collides with a truck without rear protection devices, or a car rolls over after hitting a guardrail, or a side collision occurs, such accidents often do not involve a direct impact on the front of the car body. , mainly caused by collisions between the upper part of the vehicle body and the sides. The stiffness of the collision part of the vehicle body is very small. Although the cabin is greatly deformed, causing injuries or deaths to the occupants in the vehicle, sometimes the airbags cannot be deployed due to the wrong collision location. Shelf life Today, airbags, ABS brakes and anti-lock braking systems have become essential safety equipment for most cars, and these indispensable safety equipment have also become important reference factors for consumers to purchase cars. But did you know that these safety equipment are also very delicate and require careful maintenance and care? Traffic accident caused by failure of safety equipment Not long ago, a rear-end traffic accident occurred on the Lianhuo Expressway. The large truck in front was safe and sound, but the front of the car behind was severely deformed, and both airbags were not deployed, causing serious injuries to the driver. Over the years, there have been many similar traffic accidents caused by safety equipment failure. On December 15, 2005, Jiaozuo citizen Liu was driving a car on Provincial Highway 309 when he rear-ended a van. Wen, who was sitting in the passenger seat, died on the spot. The airbag did not deploy at the moment of the collision or after. The car manufacturer sent people to the site for investigation and concluded that the vehicle's airbag system was working normally. The reason why the airbags did not deploy was because the airbag controller did not meet the conditions for opening the frontal airbags when the vehicle overturned after a rear-end collision. The Wuzhi County Court determined that the airbag system had quality defects that were causally related to the death, and ordered the company to compensate the family of the deceased 240,000 yuan. Contrary to what happened to Mr. Liu, the airbags of the car driven by Mr. Zhou deployed without any collision. At about 8 pm on November 25, 2006, it was raining heavily. When Mr. Zhou drove through a railway culvert, the airbags on both sides of the car popped out, causing Mr. Zhou's face to swell up. Fortunately no injuries were caused. After subsequent investigation, it was found that the car did not suffer any collision at that time, which made Mr. Zhou very confused. At the end of April 2003, Mr. Xu's newly purchased car rear-ended. At that time, the speed of the car was below 70 kilometers per hour, and the distance between it and the car in front was 8 meters. At this time, the vehicle in front braked suddenly. Mr. Xu instinctively stepped on the brake, but he did not stop it at all. Without even moving, the car hit him directly. One day five months later, the yellow warning light of the ABS system suddenly flashed intermittently again. Mr. Xu contacted the special maintenance department, who said that it would not affect the braking system. However, when Mr. Xu rushed to the maintenance department at a speed of 60 kilometers per hour the next morning, someone suddenly crossed the road in front of the car. Mr. Xu braked but did not brake, knocking the person several meters away. For these two accidents, Mr. Xu paid 22,000 yuan a day. Maintenance department personnel later discovered through computer testing that the braking force of the right rear wheel was poor, and there was a problem with the wire of the ABS anti-lock braking system. During emergency braking, the wire mistakenly thought it was locked and forced it to separate, resulting in no braking. Phenomenon. Airbags also have a "shelf life". With airbags in cars, the safety factor will of course be improved, but airbags also have a shelf life, otherwise they may malfunction. It's just that the maintenance of airbags is not as intuitive as the maintenance of car body appearance, and it is easy to be ignored. If you neglect the maintenance of airbags, airbags may become "invisible killers". According to professionals, airbags alone are not effective and must be used in conjunction with seat belts to ensure driving safety. When the airbag is in standby mode, car owners should not place perfume bottles or accessories on the front airbag. Once the airbag is deployed, these items will be ejected by the airbag and harm the driver and passengers. You should try to avoid high temperature and static electricity at ordinary times, and do not expose the airbag and sensor to high temperature and static electricity to avoid causing the airbag to open incorrectly. You should also avoid accidental bumps and vibrations to the airbag sensor, so as not to cause the airbag to suddenly open. Don’t do it without authorization. Change the airbag system and its surrounding layout, change the airbag system wiring, change the front bumper and the front structure of the vehicle; if the vehicle is equipped with side airbags and the side airbags are on the seats, do not install seat covers on the seats.
Experts also said that during the normal use cycle of the vehicle, the airbag will basically not malfunction, but after every 10,000 to 20,000 kilometers, the airbag and its ancillary parts should be checked at the 4S store. After 10 years of use, its airbags will not malfunction. Quality is even more difficult to guarantee. It must be thoroughly tested and replaced in time if conditions permit. "If the airbag indicator light still flashes or stays on for 6 to 8 seconds after starting the vehicle, it means that the airbag is faulty; while the vehicle is running, if the airbag indicator light flashes for 5 seconds and then stays on, it also means that the airbag If a malfunction occurs, you must go to the 4S store for inspection and processing in time," the professional reminded.