Driver's/front passenger's side airbag, function - GF91.60-P-4004-02R
Operating procedure
- When the triggering threshold for the side airbag is exceeded the restraint systems control module (N2/7) delivers an electrical ignition pulse to the left front side airbag ignition squib (R12/20) or right front side airbag ignition squib (R12/21) in the hybrid gas generator.
- The left front side airbag ignition squib (R12/20) or right front side airbag ignition squib (R12/21) ignites the solid fuel rings in the fuel chamber (2).
- The solid fuel burns. The bursting disk (4) is welded on during this combustion process.
- The compressed noble gas mixture (Argon/ Helium, ca. 240 bar) now escapes from the composite pressure vessel (1), mixes with the gases and is led to the airbag via the exhaust vents (3). In doing so the escaping gas is heated by the burned off solid fuel, whereupon this additionally increases the volume of gas.
- Under the pressure of the in-flowing gases, the inflating airbag tears open the side airbag housing and the predetermined fracture area in the door paneling and enters the interior.
- The side airbag reaches its maximum volume after approx. 35 ms.
- Once maximum volume is reached, pressure is decreased in the airbag immediately. The gas escapes from the airbag via a filter and the airbag folds up.