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Passenger Airbags


Passenger airbags inflate in frontal crashes, preventing the front-seat passenger from hitting the dashboard or other parts of the vehicle's interior.

The passenger airbag reduces fatalities in frontal crashes by approximately 20% (for belted front seat occupants). It deploys in 50 milliseconds, half the time of the “blink of an eye".

  

The passenger airbag is mounted in the dashboard on the passenger side. Typical cushion size varies from 90 to 150 liters. In most cars today, the necessary opening flap for the airbag on the dashboard is covered by a decorative skin, so the airbag remains out of sight until needed.  A reliable deployment is ensured by a predetermined, non-visible tear line on the underside of the dashboard.


A standard passenger airbag module consists of:

1. an inflator with an initiator,

2. a textile bag (cushion),

3. a housing, a deflector (inside the cushion) and

4. a cover.

The most widely used inflator technology is a pyrotechnic solid gas generant, although hybrid technologies using a combination of compressed gas and solid generant are also used.  The inflator output is highly tailorable to the restraint system requirements.

 
The housing is typically made of steel or strong, lightweight plastic. The cushion is made of nylon and folded in a specific way to facilitate rapid and safe unfolding during a deployment. 

  

Additional features like active venting or special out-of-position techniques make it possible to customize the airbag deployment for varying crash scenarios, passenger sizes and situations.​