Autoliv Development Ab

Markus Schels

Franck Lebaudy

Siegfried Pantke

Manfred Veigl

Damian Carter

David Stow

Hans-Peter Ruge

An air bag arrangement is provided, and includes a gas generator to which is connected an air bag. The gas generator has a combustion chamber for composite propellant, and walls of the combustion chamber are provided with discharge openings. A first filter unit is disposed in the gas generator housing and a second filter unit is disposed beyond the housing and surrounds the same at a distance to form a cooling and pressure-reduction zone for a gas stream coming from the first filter unit. The second filter unit separates out gaseous and/or liquid impurities resulting in a gas stream during combustion of the composite propellant in the combustion chamber. By reducing the temperature level of the gas stream and its pressure level to within the range of atmospheric pressure, the second filter unit effects a phase change of the gaseous and/or liquid impurities, whereby liquid and/or solid impurities are filtered out in the second filter unit. The gas stream then enters the air bag from the second filter unit.

Air bag arrangement with gas filtration

An airbag safety system has at least one airbag with inlets and a gas generator for generating a gas with which the at least one airbag is to be filled. An intermediate housing is connected between the gas generator and the at least one airbag. The gas is guided as a gas stream from the gas generator to the at least one airbag through the intermediate housing. The intermediate housing has outflow openings communicating with the inlets of the at least one airbag. A slide, positioned in the intermediate housing, is provided for controlling flow of the gas generated by the gas generator into the at least one airbag. The slide is displaceable relative to the inlets of the at least one airbag. An actuating member, mounted in the intermediate housing and positioned in the gas stream, is provided for generating a gas pressure force for displacing the slide. Controllably releasable securing elements for securing the slide at the intermediate housing in a rest position are provided. In the rest position, the cross-sectional area of the at least one outflow opening is unobstructed by the slide.

Airbag safety system with inflation control

Growing community of inventors

Munich, Germany

Markus Schels