Luftsack, vorzugsweise OPW-Luftsack, für ein Fahrzeug, Luftsackanordnung, Luftsackauslösevorrichtung und Verfahren zum Auslösen eines Luftsacks

An airbag, preferably a one-piece woven (OPW) airbag, which is configured to be set from an uninflated state to an inflated state by an inflation operation to protect an occupant of a vehicle,

• wherein the airbag has at least two fabric layers, preferably two fabric layers in certain regions and/or three fabric layers in certain regions, which are joined together in such a way that at least a first airbag chamber and a second airbag chamber being separate from the first airbag chamber are formed,
• wherein the fabric layers are further joined together in such a way that
• the first airbag chamber, preferably formed as a three-layer chamber, and the second airbag chamber, preferably formed as a two-layer or three-layer chamber, can be set independently of each another from the uninflated state thereof into the inflated state thereof, respectively, and
• the first airbag chamber, starting from its uninflated state, curves outwardly during a first inflation operation of the first airbag chamber and/or forms a tubular shape with an oval or circular cross-section at least in portions in the inflated state of the first airbag chamber, and thereby an overlapping portion (ÜAouter), preferably an outer overlapping portion, of the second airbag chamber in the uninflated state thereof or in the inflated state thereof overlaps, preferably radially overlaps, an overlapping portion (ÜAinner), preferably an inner overlapping portion, of the first airbag chamber.