1. Airbag system SRS
Overview
With the improvement of highway development and performance of the car, the car is traveling faster and faster, especially is due to the rapid increase in car ownership, traffic increasingly congested, making accidents more frequently, so the car’s safety becomes particularly important. The airbag is a striking modern car on new technology device. In order to reduce due to the huge inertia force caused injury to the driver and passenger of the car frontal collision, the front end of the driver at the center of a modern car steering wheel equipped with an airbag system generally, some car kit in front of the driver Fuzuo terminal is also equipped with an airbag system.
[of the airbag system]
at the time of the car crash occurs, the airbag system is very effective to protect the safety of occupants. Current steering wheel airbag system is typically a single airbag system, or a dual airbag system. Vehicle equipped with dual airbags and seat belt pretensioner system when the collision occurred, regardless of the level of speed, the air bag and seat belt pre-tensioners operate simultaneously, thus resulting in a waste of a low-speed crash when the air bag, so add a lot of maintenance costs.
The operation of the two dual airbag system, when the car collision occurs, according to the magnitude of the velocity and acceleration of the vehicle, automatically selecting operation using only the seatbelt pretensioner, and a seatbelt pretensioners or dual airbags work at the same time. Thus, when the low-speed collision occurs, the seat belt system that is able to use only the safety of the occupants adequate protection, airbag without waste. If the speed is greater than 30km / h a collision, seatbelts and airbags operated simultaneously, in order to protect the safety of occupants. When
works
When the vehicle frontal collision occurs, the airbag control system to detect an impact force (deceleration) exceeds a set value, the computer immediately airbag the inflatable element is turned the squib circuits, medium ignited ignition flame ignition point within the squibPowder powder and gas generating agent, a large amount of gas, i.e. air bag inflated in 0.03 seconds, so that the rapid expansion of the balloon, to break the steering wheel decorative cover to the drum driver and passenger, the driver and passenger head and chest pressure on the airbag gas filled cushion the impact of the driver and passenger, the airbag will subsequently gas evolution.
The airbag impact force can be evenly distributed in the chest and head, body and prevent the body vulnerable passengers direct collision, greatly reducing the likelihood of injury. Airbag when subjected to frontal impact, indeed can effectively protect passengers, even if not wearing a seat belt, airbag crash is still sufficient to effectively reduce the damage. According to statistics, when the car is equipped with airbags frontal collision, can reduce the degree of injury to the occupant of up to 64 percentage, even where there are 80 percent of passengers not wearing a seat belt! As for the collision from the side and the back seat, the seat belt still depends on the function.