Process for providing gradual deployment of an airbag and a pyrotechnic charge for its implementation

摘要

The invention relates to the field of protecting the occupants of a motor vehicle by an inflatable airbag. The invention relates to a process consisting in inflating an airbag (1) by a pyrotechnic generator (2) containing a double-composition charge (9) formed around a main charge having a linear burning rate V1 and at least part of the ignition faces of which are covered with a skin of moderate pyrotechnic composition having a linear burning rate V2 satisfying the relationship:The invention thus makes it possible to inflate the airbag gradually during the first milliseconds of deployment of the latter.