Understand the basics of car airbags in one article!

Guide: Are there good or bad car airbags? Are the airbags also classified? Different classes of car airbags are not the same. If so, what classification is it based on?

carofairbagThere are good and bad points, this is for sure. After all, as a passive safety system, airbags also develop step by step from simple to complex. The quality and level of airbags will definitely develop with the rise of the automotive industry.From the early use of simple cloth bags, to the high-end requirements of materials, coatings, folding methods, igniters, system integration, etc.; from the early simple actuators of the airbag controller to the later analog typesensor, Developed to the present digitalsensor. In the process of development, the distinction between good and bad is naturally distinguished, high-level and low-level, just like Darwin's multi-species evolution. Although this metaphor seems far-fetched, there are similarities.

Airbags are good or bad. In fact, everyone pays a little attention when buying a car. You can see the detailed introduction of airbag configurations in the configuration sheet. But for those who just bought a car, they only care about the number of airbags and ignore the quality of the airbags. In fact, there is a certain relationship between the number of airbags and safety, but it does not mean that the number of airbags is large. The safety of the car is High, the quality of the airbag that can save your life at the critical moment is often the quality of the airbag. Obviously, the quality of the airbag directly determines the safety factor.

Next, let’s take a look at the protection principle of airbags, we can know the importance of airbag quality: when the car is subjected to a certain collision force, the airbag system will be hidden in the car (substances such as sodium nitride or ammonium nitrate). The chemical reaction of the explosion of trace explosives causes the airbag to be inflated and popped in an instant. It can be in place in time before the occupant’s body collides with the parts in the car. To pave the way, reduce the impact of the body, and finally achieve the effect of reducing the injury of the occupants. No matter what goes wrong in a certain link, the airbag will not be used effectively, which will directly endanger the members.

The quality of the airbag can also be distinguished from the material: the airbag is generally made of polyphthalamide fabric with good crack resistance. It is a semi-hard polymer material that can withstand greater pressure. Generally, there are nylon fibers and Two major categories of polyester fiber options. Among them, nylon fiber has the characteristics of large breaking elongation, good elasticity, high abrasion resistance, and high heat content, and is widely used, especially nylon 66 in the nylon family. The airbag using nylon 66 is better. The picture below shows the recycled material of nylon 66:

This is what we usually call the two-stage unconventional airbag, that is, there are two igniters that give different ignition times. The airbag controls and adjusts the airbag opening speed and inflation time according to the collision time, the collision speed, and the collision strength, through two levels. Explode to open. This kind of airbag has a higher cost and is generally used in some more luxurious models.

Compared with the first-level airbag, the safety considerations of the second-level airbag are more humane, and the cost is also quite different.Ordinary first-class airbags may cost around two to three thousand yuan, while second-class airbags generally cost more than 10,000 yuan. Because of the cost gap, single-stage airbags are still the main models for mid-level and lower models, while high-end models are likeBenz,BMW, And other models are all secondary airbags, and mid-to-high-end cars, such as Excelle, are also secondary airbags.

The lower level is called the first-level airbag, which is a one-time explosion type, that is, once a collision, the airbag is fully inflated, bursts out, and quickly fills up the space. This kind of airbag is low in cost and has a wide range of applications, but its shortcomings are also very great. Obviously, that is because the airbag bursts with great power in an instant, which can cause great harm to the women and children on the co-pilot, especially if the co-pilot’s personnel are not in time.seat beltIf so, this kind of airbag will not only not save you but will harm you.

There is a reminder: Regardless of whether the airbag is good or bad, there are also equipment that cannot be separated from the airbag, that is, the seat belt. The working principle of the airbag is to work with the seat belt. The seat belt pulls your body. , The airbag is responsible for cushioning. So: No matter what airbag in your car, you must wear a seat belt! This is the top priority.

Since the engine and materials used in each car are different, the acceleration of the human body during a collision is not the same.steering wheel, The contact time of the instrument panel and other equipment is also different. Therefore, the airbag of each car is determined by various crash tests and simulations to determine the best ignition time. The airbag design of each car is designed to be perfect.

Speaking of the quality of airbags, let's look forward to the development direction of automobile airbags: intelligent and multiple airbags are the inevitable trend of the development of overall airbag systems in the future.

For example, seat belts with airbags in the rear are also a good development branch of airbags.

The future airbags are definitely advanced and excellent airbags. The new technology can better identify the type of passengers and take different protective measures. The system uses weight, infrared, ultrasonic and other sensors to determine the distance, weight, height and other factors of the passenger and the dashboard, and then determines whether to explode the airbag, use one-stage ignition or multi-stage ignition, and how big the explosive force is in the collision. The seat belt forms the overall control. Through sensors, the airbag system can also determine the type of collision that the vehicle is currently experiencing, whether it is a frontal collision or an angular collision, a side collision or a rollover movement of the entire vehicle, so as to drive the airbags in different positions on the body to form the best protection for passengers. The airbags of the future can be said to have perfect functions (airbags) that you can't even think of.