What is the automotive supplemental airbag?
The automotive supplemental airbag, commonly referred to as the passenger airbag, is an important component of the vehicle's passive safety system (SRS, Supplemental Inflatable Restraint System), designed specifically to protect the occupants in the passenger seat during a collision by reducing injuries.
Key points:
- Definition and location: The passenger airbag is installed in the front of the passenger seat dashboard, usually above the glove compartment or inside the right console trim panel. Its surface often bears the letters "AIRBAG" or "SRS".
- Working principle: When a vehicle experiences a severe frontal collision (such as when traveling at speeds exceeding 30 km/h and colliding within 60° on the front), the collision sensor transmits a signal to the electronic control unit (ECU), which triggers the gas generator to rapidly fill with nitrogen to inflate the airbag. This creates a cushioning air cushion that acts as a buffer before the occupant experiences a "secondary collision" with hard objects inside the vehicle (such as the dashboard).
- Protection effect: When used in conjunction with seat belts, it can reduce the impact on the head by approximately 75% and reduce chest injuries by 44%.
- Using alone may cause additional injuries (such as facial burns, neck sprains) due to rapid ejection.
- Usage restrictions: Children under 12 years old must not sit in the passenger seat; even if there is an airbag switch, it is recommended to avoid using it.
- Impact force when deploying: The force of the airbag deployment can be as high as 200-500 kg. Without a seat belt or with a forward-leaning body, it can easily cause serious or even fatal injuries.
- Special types: Recently, some vehicle models have added a "passenger seat cushion type airbag", which is positioned at the front of the seat cushion and mainly functions to restrain the passenger's lower body movement to prevent legs from sliding into the glove compartment, optimizing the sitting posture to improve the efficiency of seat belt restraint.
- Faults and maintenance: If the SRS indicator light on the dashboard is constantly on or flashing when starting, it indicates a system failure and requires immediate professional repair.
- The airbag is a one-time item. After bursting, the entire system (including sensors, ECU, airbag body, etc.) must be replaced.
- Special considerations:
- The passenger airbag (i.e., the airbag in the passenger seat) is an important part of the vehicle's passive safety system, primarily providing a buffer to protect the occupants in the passenger seat during a collision, reducing injuries. According to the latest publicly available information, its core functions and features are as follows:
- Main function: Buffering impact; inflating rapidly to form an air cushion to absorb collision energy and reduce the impact force on the head and chest of the occupant.
- Preventing secondary collision: Avoiding direct contact between the occupant's body and hard objects inside the vehicle (such as the dashboard, glove compartment).
- Coordinating with seat belts: When used in conjunction with seat belts, it can significantly enhance the protection effect - studies show that it can reduce the impact force on the head by approximately 75%.
- Trigger conditions: Usually, it requires a vehicle speed higher than 30 km/h and a collision within 60° on the front.
- System response is extremely fast: From the sensor detecting the collision to the airbag fully inflating, it takes approximately 0.015 seconds (15 milliseconds).
- Types and extended functions:
- Traditional passenger frontal airbag: Installed on the right side of the console or above the glove compartment, mainly protecting the head and chest.
- Passenger seat cushion type airbag: Positioned at the front of the seat cushion, used to restrain the passenger's lower body movement to prevent excessive forward movement, improving the efficiency of seat belt restraint and reducing leg and pelvic injuries. If you have to ride in the vehicle, the secondary airbag locking function should be enabled (some models support manual or automatic disengagement).
Do not place hard objects in the passenger seat area: such as perfume bottles, phone holders, etc. When the airbag deploys, they may fly at high speed and cause additional injuries.
Technology Trends
High-end models adopt the "secondary inflation technology", adjusting the airbag inflation volume dynamically according to the collision intensity.
Some models (such as the Ideal L9) solve the compatibility problem between large screens and the airbag deployment position through patented technology.
Note: In recent years, some entry-level models (such as the Changan Lumin Treasure Edition) have eliminated the passenger seat airbag to control costs, triggering public discussions on basic safety configurations.
When purchasing a vehicle, it is recommended to choose models equipped with both front and rear airbags.
If you want to know more, keep reading the other articles on this site!
Please call us if you need such products.
Zhuo Meng Shanghai Auto Co., Ltd. is committed to selling MG&MAXUS auto parts welcome to buy.
