Driver airbag
| Driver airbag |
On the driver's side, there is a gas generator and an airbag. The gas generator is secured in a magnesium housing. The airbag is protected by a plastic cover with fracture lines mounted to the metal bracket. The airbag has a volume of approx. 58 litres.
The steering wheel centre pad (airbag module) is supplied with test and detonation current from a coil spring (contact roller), which also supplies the SID with information from the steering wheel buttons.
| Driver airbag gas generator |
| 1. |
Gas generator, 80 %
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| 2. |
Gas generator, 20 %
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The gas generator consists of an aluminium housing, electric detonator, explosive charge and filter. The gas generator works in two stages. These stages are divided into a primary stage of 80 % and a secondary stage of 20 %. Depending on the information the control module receives from the different sensors, the stages are ignited with different time delays.
On receiving an activation command, the control module sends a current pulse to the detonator which ignites the explosive charge. On combustion, this explosive charge generates a gas. The filter cools the gas and removes particles from it before it passes into the airbag.
For more information on ignition signals, see SRS control module .
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