Dual chamber gas bag inflator.

摘要

A dual chamber gas generator (10) for inflating a vehicle inflatable restraint cushion comprises a housing made from a single extruded piece which includes a tubular portion (14) and a bulkhead (16) which is integral with the tubular portion and which separates two combustion chambers (18,20) containing first and second gas generation charges (74). The extruded housing is provided to eliminate the possibility of hot gases blowing by the bulkhead from the first charge and accidentally igniting the second charge prematurely, to reduce manufacturing cost, and to offer flexible inflator performance output which is tailorable to the specific needs of the automobile at the time of a crash while providing a slower onset of air bag inflation for avoiding injuries to small children and out-of-position occupants and still rapidly achieving full inflation.