| 摘要 |
<p>The present invention relates to a pyrotechnic gas generator for inflating a motor vehicle airbag, the generator comprising: two coaxial cylindrical tubes, namely an inner tube (3) defining a combustion chamber (C), and an outer tube (2); and a pyrotechnic initiator (6) placed in line with the inner tube (3), suitable for initiating combustion of a pyrotechnic charge (5) placed inside said combustion chamber (C); the inner tube (3) presenting outlet orifices or "nozzles" (33) for evacuating the gas and particles generated by combustion of the charge towards a "condensation and filtering" chamber (T) defined by the space between the two tubes (2; 3), and while the outer tube (2) also presenting in its cylindrical wall (20) orifices (23) for releasing gas to the outside in order to inflate the airbag. The invention is characterized essentially by the facts that both tubes (2; 3) are blind, with their closed ends (22, 32) being disposed at the same end; said nozzles and/or their respective sections are distributed along the cylindrical wall (30) of the inner tube (3) in a non-linear distribution; and the gas outlet orifices (23) presented by the outer tube (2) are distributed over the outer tube in its zone facing the combustion chamber (C) in at least two distinct regions, e.g. at each of the two ends of the combustion chamber.</p> |
