Gas generator for an airbag system

Details Gas generator for an airbag system Gas generator for an airbag system

B - Operations, Transporting

60

R

B60R 21/26 (2006.01)

Patent

CA 2249340

The invention concerns a gas generator comprising: a combustion chamber part (12) which contains a gas-generating material (18); and a dust separator (13) for separating solids present in the gas flow generated. According to the invention, in order to prevent the air bag from inflating too suddenly and thereby injuring vehicle occupants, the combustion chamber part (12) is divided into at least two combustion chambers (16, 17) which operationally are independent of each other, each comprising its own ignition element (19, 20). The ignition elements (19, 20) are controlled successively in a chronologically staggered manner in order to lengthen the gas-generation time interval.

L'invention concerne un générateur de gaz comprenant une partie chambre de combustion (12) qui contient un matériau (18) produisant du gaz, et un séparateur de poussières (13) servant à séparer les solides contenus dans le courant gazeux produit. Afin d'éviter que la poche de gaz ne se gonfle subitement et ne blesse les occupants du véhicule, il est prévu que la partie chambre de combustion (12) soit divisée en au moins deux chambres de combustion (16, 17) fonctionnant indépendamment l'une de l'autre, dont chacune comporte son propre élément d'allumage (19, 20). Les éléments d'allumage (19, 20) sont amorcés successivement de manière échelonnée dans le temps, pour prolonger le laps de temps au cours duquel le gaz est produit.

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