Gas generator for vehicle safety system, airbag module and vehicle safety system as well as method for operating a gas generator
AssigneeZf Airbag Germany GmbH
InventorsKarl Engibrecht, Johannes Ebner, Benedikt Peters
Life of this patent
Estimating the term…
Abstract
The disclosure relates to a gas generator for a vehicle safety system, comprising an ignition unit, a propellant configured in a combustion chamber in a form of a propellant bed extending along a longitudinal axis of the gas generator. A sleeve having an axial opening protrudes into the propellant bed such that it surrounds the ignition unit at least partially and portions of the propellant are stored inside and outside the sleeve.
Claims18
A gas generator for a vehicle safety system, comprising an ignition unit, a propellant which is configured in a combustion chamber in a form of a propellant bed extending along a longitudinal axis of the gas generator, wherein a sleeve having an axial opening protrudes into the propellant bed such that the sleeve surrounds the ignition unit at least partially and portions of the propellant are stored inside and outside the sleeve.
A method for operating a gas generator comprising the following steps of:
- a. providing a gas generator comprising an ignition unit, a propellant configured in a combustion chamber in a form of a propellant bed extending along a longitudinal axis of the gas generator, wherein a sleeve having an axial opening protrudes into the propellant bed such that it surrounds the ignition unit at least partially and portions of the propellant are stored inside and outside the sleeve;
- b. activating the ignition unit and igniting the portion of the propellant that is located inside the sleeve, wherein a part of the portion of the propellant is broken by a pressure surge of the ignition unit, thereby forming a larger combustion surface for more rapid combustion, then:
- c. igniting and burning the remaining propellant of the propellant bed at a combustion rate lower compared to step b.
Dependencies are inferred from the claim text.