| 摘要 |
A gas generator (80) for vehicle occupant restraint systems comprises an elongated housing (82) having gas outlet openings, a sealed, rupturable gas generant cartridge positioned within the housing, and pyrotechnic gas generant (90) contained in the cartridge in the form of a plurality of wafers (92) having openings defining a central passage (100). An igniter capsule (84) mounted at one end of the housing has a rupturable exit opening adjacent the sealed gas generant cartridge and aligned with the central passage (100) in the gas generant. The igniter capsule (84) includes two overlapping metal parts and contains igniter material, an initiator and an initiator charge and is mounted to close the housing (82). The initiator ignites the igniter material which expels a fireball of hot combustion products from the rupturable exit nozzle of the capsule (84) thus, rupturlng a scored end of the sealed cartridge and igniting the gas generant charge. The cartridge is surrounded by filtering and cooling screens, and contains wraps of filter screen to provide structural rigidity. <IMAGE> |
