FILTERLESS AIRBAG MODULE

摘要

A filterless airbag module (10) including a structure for cooling combustion gases. The airbag module (10) includes an inflator (12) having a housing (18) and a smokeless gas generating propellant (20) contained within the housing. One or more apertures (24) are formed in the housing (18) to enable fluid communication between an interior of the housing and an exterior of the housing. An airbag (16) is arranged to fluidly communicate with the apertures (24). A combustion gas retainer (42) is positioned exterior of the housing (18) and in alignment with the apertures (24). The retainer (42) and a surface (72) of the housing (18) combine to define a cooling chamber (50) for cooling combustion gases received from the housing (18) via the apertures (24). The cooling chamber (50) is dimensioned to affect an average residence time of combustion gases received in the chamber (50) so that the gases reside in the cooling chamber (50) for a length of time sufficient to cool the gases to a temperature within a predetermined temperature range prior to the gases exiting the cooling chamber (50). A heat-absorbing material may be positioned in the cooling chamber (50) to aid in cooling combustion gases received therein.