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Vehicle airbags have become one of the important indicators for determining the safety of a vehicle. But this is a matter of life and death of airbags but few people know how to maintain it, but also the airbag structure, performance ... ... is even less known.
The invention of airbags The prototype of today's airbags is actually an airbag invented by American Jhon W. Hetrick. As early as 1952, he invented what he called "safe air cushion" devices.
However, this type of air cushion at that time was still only a purely mechanical mechanism. Because of its insignificant protection effect, high manufacturing cost, and insufficient gas expansion speed, it did not cause widespread concern among car manufacturers. However, with the leap of automobile manufacturing technology in the 1960s and 1970s, the speed of the car has become faster and faster, and traffic accidents have also become a formidable by-product. At this time, the topic of airbags has been re-introduced.
The structure and principle of airbag The English abbreviation of the airbag is SRS, which is generally composed of several components such as a collision sensor, a computer processor, a gas generator and a main airbag. The main airbag used to protect the driver is placed in the steering wheel, while other airbags are installed in various corners of the car due to different protection positions. Some luxury cars nowadays have more than 20 airbags, but they need to The explanation is that the safety of the car is determined by many aspects, and the number of airbags is not the only standard that determines the safety factor of a car.
When a collision occurs in the vehicle, the collision sensor and the computer will determine the strength of the impact and give instructions to the airbag in time. However, the air bag popping impact force may also pose a dangerous hazard while protecting the safety of the occupants, so it is not necessarily safe to open the air bag. And the faster the vehicle speed, the shorter the collision time. Once the collision time is shorter than the burst time of the airbag, the function of the airbag is very small.
Use and Maintenance of Airbags Under normal circumstances, airbags are not self-maintained from the time they are shipped from the factory until they are scrapped. Before each start of the vehicle, the SRS warning light on the instrument panel will light for about 5 seconds to indicate the self-test. When the computer confirms the error, the warning light will automatically extinguish. If the warning light is flashing, it indicates that the airbag system has malfunctioned and should be repaired immediately.
In addition, the airbag is very powerful at the moment of pop-up, so do not place anything in front of or near the airbag. Moreover, the airbag is a one-time use item, and it needs to be reinstalled after being ejected. The cost is unfounded. Therefore, in the case of no one in the vice driving position, it may be considered to close the sub airbag.
Some Mistakes About Airbags 1. Not all airbags will open.
It should be noted that not all collision airbags will open. The sensor will only detonate the airbag if it meets certain conditions. For example, the impact must occur in front of the car, and the airbags in the side collision or rear-end driver positions will not burst.
2. Airbags do not protect young children.
Current car airbags are designed for adults, and the large impact force at the time of popping can not only protect the children under 3 years old, but also cause serious personal injury. Therefore, the safest place for children should be the rear seat, but also to fasten the seat belt, for children under the age of 3 also have to reverse the safety seat.
3. Airbags alone cannot provide proper protection.
The invention and use of the three-point seat belts have protected the lives of tens of thousands of drivers. Even today, when the automotive technology is so advanced, airbags can only play an auxiliary role. According to statistics from relevant authorities, the protection rate of airbags alone is only about 18% without the wearing of seat belts, while the protection of seat belts and airbags can be as high as 60%.
Airbag construction uses maintenance and people's misunderstanding