![]() Using this information, the airbag ECU's crash algorithm determines if the crash event meets the criteria for deployment and triggers various firing circuits to deploy one or more airbag modules within the vehicle. Modern vehicles may contain up to 10 airbag modules in various configurations, including: driver, passenger, side-curtain, seat-mounted, door-mounted, B and C-pillar mounted side-impact, knee bolster, inflatable seat belt, and pedestrian airbag modules.ĭuring a crash, the vehicle's crash sensors provide crucial information to the airbag electronic controller unit (ECU), including collision type, angle, and severity of impact. ![]() The airbag provides an energy-absorbing surface between the vehicle's occupants and a steering wheel, instrument panel, body pillar, headliner, and windshield, for example. It can reduce injuries between the flailing occupant and the interior of the vehicle. The purpose of the airbag is to provide a vehicle occupant with soft cushioning and restraint during a collision. It consists of the airbag cushion, a flexible fabric bag, an inflation module, and an impact sensor. ![]() ![]() The driver and passenger front airbag modules, after having been deployed, in a Peugeot 306Īn airbag is a vehicle occupant-restraint system using a bag designed to inflate extremely quickly, then quickly deflate during a collision.
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