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📘 A folded cushion waits inside the steering wheel

A folded fabric cushion, inflator, and cover wait inside the steering wheel or dashboard as a supplemental restraint.

3
lessons
~15 min
to learn
Adults
level
Start the course →

What you’ll learn

  1. Crash detection and ignitionExplain supplemental restraint packaging, crash sensing, and the firing command.The controller decides whether to deploy based on crash motion and system strategy.
  2. Inflation and cushion shapeDescribe gas generation, cover opening, and fabric deployment.The inflator fills a shaped cushion quickly without relying on an external pump.
  3. Restraint and ventingConnect belt interaction, venting, deployment variation, and the complete sequence.The airbag works with the belt and vents to spread crash load, then remains a one-time device.

Questions this course answers

What is the airbag’s relationship to the seat belt?

The belt positions and restrains the occupant while the airbag adds a broad cushion.

What does the restraint controller evaluate before deployment?

Deployment depends on the crash pulse and the vehicle’s sensing and restraint strategy.

What starts the inflator’s gas-producing process?

The controller sends a firing command to an initiator inside the inflator.

Why does an airbag have vents?

Controlled venting helps the cushion absorb energy instead of acting like a rigid balloon.

Why might a passenger airbag be suppressed?

Advanced systems can use occupant information to avoid an inappropriate deployment.

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