Airbags are a very pivotal element when it comes to car’s safety as they inflate in case of accidents and prevent major injury. This inflation leads to you saving your life, and your co-passenger’s too. They reduce the risk of death in a direct frontal crash by almost 30%. However, once inflated, they need to be immediately put back in by an airbag module repair shop.
How do they work?
During a crash, the car abruptly stops and hence by the force of momentum, the driver lunges forward to crash onto the steering wheel. What an airbag does is to reduce this momentum by creating a surface or a pillow, so that the driver or the passenger crashes slowly.
Components of an airbag
There are three major components of an airbag. They are:
- Inflation System
The bag is made up of nylon material and is folded into the steering wheel or the dashboard. The second and the most important element is the sensor. This sensor detects that a crash has happened and immediately fires the airbag to inflate and save the driver. If the collision force is equal to running into a brick wall having a speed of 16-24 kmph, then the sensor gets activated. The sensors receive the information from a chip which is present in the accelerometer.
The bag is immediately pumped up with nitrogen gas which is produced by a reaction of sodium azide and potassium nitrate. These hot blasts inflate the air bag to form a pillow once the sensor detects a collision.