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02-17 8810-00 General deployment of air bag ▶ 3) Deployment Procedure Air bag cover (opening section) Air bag cushion Vent hole Inflator Filter Ignition Gas generator In general, the air bag unit transmits the ignition current to the ignition device of the corresponding air bag inflator when a collision signal from the impact sensor is sent to the air bag unit When the ignition device of the inflator is ignited, the gas generator generates nitrogen gas by being burned, and this gas inflates the air bag cushion through the filter. The nitrogen gas used to inflate the air bag exhausts through the vent hole immediately. Cross section of driver air bag Cross section of inflator |