Gasgenerator

摘要

The invention relates to a pyrotechnic gas generator, preferably for use in an air bag system, which comprises a housing (1), an ignition unit (2), a gas-producing mixture (3) and a cooling system or cooling and filtration system (4) which narrows in the direction of outflow and is notably conical. Said system contains the gas-producing mixture (3) and the housing (1) is preferably made of a single piece and tubular in shape. The combustion gases are discharged via outlet openings (5) which are configured radially, axially or at an angle on the side opposite the ignition unit. The cooling system or cooling and filtration system divides the gas generator into a combustion chamber (6) which contains the gas-producing mixture (3) and in which a gas is generated by burning said mixture, and a discharge chamber (7) in which the cooled and possibly filtered gas can flow off and escape through the outlet openings (5). The fact that the cooling system or cooling and filtration system narrows in the direction of outflow and is notably conical ensures both optimal cooling and filtration as well as minimal space requirements and a reduction in weight.