SIDE AIR BAG MODULE CONSTRUCTION/OPERATION


BHE081000147T02

Construction

• Side air bag modules are installed on the outboard sides of the front seat backs.

• The side air bag module is composed of an inflator, module cover and air bag.

• When an air bag deploys, the side air bag module cover is spread apart by the generation of argon gas from the inflator, inflating the air bag.

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Side air bag module
2
Inflator
3
Module cover
4
Air bag

Operation

Air bag module deployment operation

• Refer to the SAS UNIT DESCRIPTION, Air Bag Module and Pre-tensioner Seat Belt Deployment Operation. (See SAS UNIT CONSTRUCTION/OPERATION.)

Inflator operation

1. The igniter built into the inflator begins to build up heat when the operation (deployment) signal is sent from the SAS unit. The inflation agent is ignited by the build up of heat in the igniter.

2. The argon gas expands due to the heat of the ignited inflation agent.

3. The expanding argon gas breaks the discharge barrier, is cooled and filtered by the filter, and then injected into the air bag.

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Ignitor
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inflation agent
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Combustion of inflation agent
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Argon gas
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Argon gas expansion
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Discharge barrier
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To air bag