Front passenger airbag, component description - GF91.60-P-4038GZ

MODEL 164 

The front passenger airbag with its squibs (front passenger airbag squib 1 (R12/4) and front passenger airbag squib 2 (R12/5)) is located in the instrument panel on the passenger side; it protects the front passenger against injury in the event of a head-on collision.

In the event of a severe enough impact, the front passenger airbag is triggered - depending on the seat occupied recognition of the front passenger seat and the WSS (Weight Sensing System) control unit (N2/13).

The airbag consists of a two-stage compressed gas generator and an air sack, i.e. the airbag.

Function 

The restraint systems control unit (N2/7) delivers an electrical ignition pulse to either one or both of the squibs of the gas generator, depending on the severity of the impact.

The type of crash involved determines whether the squibs are ignited simultaneously or in stages. If the squib is ignited, a high pressure is generated which is transmitted to the corresponding pressure chamber.

The pressure rise in the pressure chamber fractures a bursting disk, enabling the gas mixture to flow into the airbag. The airbag is inflated.

The pressure of the incoming gas causes the airbag to deploy. The airbag flap is ripped apart along the predetermined fracture points and the airbag deploys fully.

The airbag reaches its maximum volume within approximately 35 msec.

The bag begins to deflate immediately after reaching its maximum volume. The gas escapes from the airbag through a filter and the airbag collapses.