GF91.60-P-4001-02R Driver Airbag - Function

GF91.60-P-4001-02R Driver Airbag - Function







Predetermined fracture point of driver airbag (shown on model 210)

The figures are illustrations of the principle and are not vehicle-specific

Operating procedure
1. The restraint systems control module (N2/7) sends an electric ignition pulse: in the event or a minor accident to driver airbag ignition squib 1 (R12/13) and in the event of a serious accident to driver airbag ignition squib 2 (R12/14).
The type of crash involved determines whether the detonators are ignited simultaneously or in stages.

2. The detonators then ignite the solid propellant in the inflator. When the solid fuel burns it generates a gas that flows "explosively" under high pressure through a filter and into the interior of the airbag folded compactly on top of the inflator.







3. The bag then inflates, forcing open the steering wheel hub cover along a special predetermined fracture point.
4. As more gas enters the bag, it pushes through the predetermined fracture point and fills to maximum volume.







5. The airbag reaches its full volume within approximately 30 msec.
6. It begins to deflate immediately after attaining maximum volume. The gas escapes from the airbag through a filter and the airbag collapses.

Even if the nature of the accident necessitates deployment of stage 1 of the driver's airbag only, stage 2 is ignited with a subsequent ignition within a short time span. This ensures that both stages have deployed.
The airbag unit can then be disposed of in the normal way.