[Automobile Air Bag] Precept and technical evaluation | 4 security precautions

To make sure that the motive force and passengers within the automobile can Traffic Accidents To be able to cut back the injury attributable to accidents, vehicle security has all the time been an necessary space within the vehicle trade. Amongst them, airbags could be mentioned to be the opposite most necessary passive security safety system after seat belts. Kwiksure will clarify intimately the origin, working precept and software precautions of vehicle airbags.

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The Origin and Growth of Car Airbags

The earliest idea of airbags could be traced again to World Warfare I, when two British University of Birmingham college students of the Institute of Aeronautics and Astronautics invented an “Air Cushion” to guard fighter pilots. This system comprises sponge, is roofed with rubber, and has air holes to regulate the deflation velocity to realize a cushioning impact. Though it’s totally different from trendy automobile airbags, it laid the essential idea of airbag cushioning safety.

The origin of the automobile airbag dates again to the Nineteen Fifties, when American engineers John W. Hetrick Invented and patented the “SRS” (Supplemental Restraint System), however because of the immaturity of the expertise, it has all the time remained within the theoretical and testing stage.

Evaluation of the technical ideas of airbags

In 1964, Japanese engineers Yasusaburo Koga In collaboration with a number of universities and the Japanese Ministry of Protection, he proposed the revolutionary idea of utilizing a small explosive system to shortly inflate an airbag, which grew to become the premise of contemporary airbag expertise. This expertise was later launched to the USA, the place Allen Breed improved the set off sensor, permitting the airbag to inflate in lower than 0.03 seconds, bettering response velocity and reliability.

After years of growth and enchancment, Normal Motors was the primary to launch a mass-produced automobile outfitted with airbags in 1974. In 1980, Mercedes-Benz’s S-Class was the primary European automobile outfitted with airbags. Right this moment, airbags have grow to be commonplace gear in vehicles.

The working precept of vehicle airbags is principally divided into 4 elements, together with digital sensors, processors, triggers and airbags.The working precept is that when the sensors put in on the 4 sides of the automobile physique encounter a severe impression, the processor will calculate totally different information similar to car velocity, shock depth and braking standing, in order to find out whether or not the set off must be detonated. When the set off is detonated, the chemical propellant inside will explode, and a considerable amount of gasoline will probably be injected into the airbag in a really brief time, in order that the airbag will probably be inflated at a excessive velocity (about 230 to 320 kilometers per hour) inside 5 thousandths of a second to type a cushion, defending the motive force and passengers from collisions with arduous objects such because the steering wheel and dashboard.

Though explosions are used to set off airbags, the propellants are normally insensitive explosives (similar to ammonium nitrate), which is able to solely be triggered below a sure impression drive, thus avoiding unintended explosions and guaranteeing the “security” of the airbags.

Varieties and safety vary of airbags

With the evolution of expertise, the kinds and software vary of vehicle airbags have steadily expanded from being solely put in in entrance of the motive force’s seat to the co-pilot seat, facet, curtain and knee areas, and even utilized to bikes. Facet airbags and air curtains are primarily used to guard the pinnacle and facet of the physique, decreasing accidents in facet collisions and rollovers, whereas knee airbags can successfully cut back injury to the realm beneath the knee in secondary collisions.

As well as, trendy automobile designs have additionally begun to innovate the way in which airbags are deployed, similar to ZF, Germany The brand new technology steering wheel airbag is designed to deploy from the higher fringe of the steering wheel to match the seamless internal cage design lately, bettering security and aesthetics.

Right use and precautions of airbags

With the popularization of airbags, virtually all vehicles are outfitted with airbags. In actual fact, airbags are used as an auxiliary seat belt system and can’t change seat belts. Due to this fact, they have to be used along with seat belts to repair the passenger’s place and perceive the protected distance of the airbag to keep away from being injured resulting from being too shut when the airbag explodes, in order to realize the most effective safety impact.

Though airbags are very dependable, there are nonetheless information experiences about airbags every now and then, saying that drivers or passengers have been injured by airbags that popped out. In actual fact, along with having an accurate sitting posture and sustaining an applicable seat distance, customers can discover a label printed with “Air Bag” on the location the place the airbag is put in, and don’t place sundries or decorations close by to keep away from secondary accidents attributable to airbag explosions.

4 appropriate methods to make use of airbags

In accordance with Transport Department documents of Suggestions: 4 appropriate methods to make use of airbags

• Put on seat belts appropriately

• Hold a correct distance from the air bag outlet

• Keep away from inserting particles close to the air bag

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• Younger youngsters ought to sit within the again seat and use applicable security units

Airbag standing indicator

Typically talking, the airbag indicator gentle on the dashboard will gentle up for a short while when the automobile is began, indicating that the system is checking the airbag system. Nevertheless, if the airbag indicator gentle is constantly on, it means that there’s a likelihood that the airbag system is malfunctioning. On this case, it’s best to contact a upkeep technician instantly for inspection.

Airbag deployment post-processing

Though most airbags are fabricated from high-strength and high-temperature resistant fibers similar to nylon, and won’t break after they explode, the airbags can technically be folded again into place, however the course of requires nice ability and time, significantly growing upkeep prices. Due to this fact, it is suggested {that a} new airbag meeting get replaced as a substitute, which is cheaper.

As for different elements similar to sensors and triggers, the previous is more likely to have been broken to some extent throughout the collision, and the latter must be changed as a result of the chemical propellant inside has been used. In abstract, if the airbag is deployed, the restore price can simply exceed 10,000 yuan and even tens of hundreds of yuan (relying on the variety of airbags deployed). Typically it’s extra affordable to decide on to scrap it quite than restore it.

Regularly requested questions

The place are automobile airbags situated?

Along with being put in in entrance of the motive force’s seat, many fashions even have airbags put in within the entrance passenger seat, facet, curtain and knee areas.

Methods to use automobile airbags appropriately?

Airbags can not change seat belts and have to be used along with seat belts to safe passengers. As well as, no particles or decorations ought to be positioned close to airbags to keep away from accidents attributable to being too shut when the airbag explodes.