Trw Airbag Systems Gmbh

Zf Airbag Germany Gmbh

Sebastian Bierwirth

Achim Hofmann

Hans-Peter Neumayer

Dieter Spitzenberger

Hannes Nuiding

Thomas Schober

Tobias Breddermann

Josef Bommer

Dietmar Schwebel

Karsten Schwuchow

Johannes Ebner

Dieter Leier

Georg Schoenhuber

Martin Oberstarr

Joerg Friedrich

Franz Fuerstenberger

Detlef Last

Fabien Cristoforetti

Karl Englbrecht

Christian Jung

Thomas Kapfelsperger

Rolf Ruckdeschel

Vadim Kolbin

Uta Isenmann

Georg Schönhuber

Bernhard Mehnert

Daniel Hillmann

Dieter Sptizenberger

Jörg Friedrich

Franz Fürstenberger

Jörg Friedrich Dr

A gas generator () comprises a housing () in which a conical combustion chamber screen () terminates the combustion chamber (). On the front side, the combustion chamber screen () is closed by an end cap () to which a filter element () is connected which has one or more axially projecting centering extensions () on the edge of the filter bottom ().

Gas generator

The invention relates to a gas generator (), especially for a vehicle safety system, comprising an exterior housing (), an igniter unit () having an igniter (), a combustion chamber () having fuel bodies (), the combustion chamber being arranged axially downstream of the igniter unit (), at least one filter unit () being arranged within the combustion chamber (), which filter unit () divides the combustion chamber () along a longitudinal axis (La) of the gas generator () into a first combustion chamber portion () having a first number of first fuel bodies () and at least one additional combustion chamber portion () having an additional number of additional fuel bodies ().

Gas generator, airbag module, vehicle safety system and method for operating gas generator

The invention relates to a hybrid gas generator () which comprises a compressed gas chamber () and an igniting unit (), wherein the compressed gas chamber () is closed by a first igniter-side bursting membrane () and a second bursting membrane (). According to the invention, a first, rapidly burning-off pyrotechnic agent () and a second pyrotechnic agent () burning off slowly in comparison to the first pyrotechnic agent () are located in the hybrid gas generator (), wherein the second bursting membrane () is openable by positive pressure which can be generated in the compressed gas chamber () and the first pyrotechnic agent () is separated from the second pyrotechnic agent () in such a manner that the positive pressure in the compressed gas chamber () for opening the second bursting membrane () can be generated by the first pyrotechnic agent ().

Hybrid gas generator, method for operating a hybrid gas generator, airbag module and vehicle safety system

The invention relates to a hybrid inflator especially for a vehicle safety system, comprising an igniter (), a combustion chamber () including a propellant charge () which is separated from the igniter () by a first bursting element () held by a bursting element holder (), and comprising a compressed gas tank () filled with compressed gas and having at feast one discharge opening, the discharge opening being closed by a second bursting element () and the compressed gas tank () being fluid-communicated with the combustion chamber () so that the compressed gas surrounds the propellant charge (). The invention excels by the fact that the bursting element holder () at least in portions delimits an ignition chamber () containing a booster charge (), wherein a shock wave (SW) for opening the second bursting element () can be formed only when both the igniter () and the booster charge () have been ignited and, respectively, activated. The invention further deals with an airbag unit and a vehicle safety system comprising said hybrid inflator or said airbag unit. Moreover, the invention states a method of forming a shock wave within a hybrid inflator.

Hybrid inflator, airbag unit and vehicle safety system comprising such hybrid inflator as well as method of forming a shock wave

The invention relates to an inflator () comprising an ignition unit () having an igniter (), a chamber () arranged axially downstream of the ignition unit () and a diffuser chamber () arranged axially downstream of the chamber () which is comprised by a diffuser (), wherein a combustion chamber screen () having an igniter-side end () and a diffuser-side end () is disposed in the chamber (), the combustion chamber screen () being tapered, especially conically, in the longitudinal direction (L) of the inflator () from the igniter () toward the diffuser ().

Gas generator, airbag module and motor vehicle safety system

An inflator as well as a method of manufacturing an inflator, a module including an inflator and an airbag module. In an inflator, especially for a protective device in a vehicle, comprising plural components a sealant is applied in the area of abutting components, especially a sealant which adheres to both abutting components.

Inflator, method of manufacturing the same and module including said inflator

The invention relates to a hybrid inflator () comprising a combustion chamber () and a pressure gas tank (), wherein in the idle state of the hybrid inflator () an outlet opening () of the pressure gas tank () is closed by a bursting element () which in the case of function of the hybrid inflator () can be destroyed by means of a penetration element (), wherein a mixing chamber () is formed between the pressure gas tank () and the combustion chamber (). In accordance with the invention, between the combustion chamber () and the mixing chamber () at least in portions a partition wall () having a combustion chamber side () and a mixing chamber side () is formed, wherein the partition wall () includes at least one combustion chamber opening () which in the idle state of the hybrid inflator () is closed by a cover () formed on the mixing chamber side () of the partition wall ().

Hybrid inflator, method of operating a hybrid inflator, airbag module and vehicle safety system

A gas generator () comprises an outer housing, which has at (east two housing parts (), which are connected to each other, in the form of a diffuser bowl () with outflow openings () towards the outside and a cover () directly connected to the diffuser bowl (). Inside the gas generator (), at least one first and one second combustion chamber () are provided, wherein the first combustion chamber () is delimited by an inner wall () and the second combustion chamber () is located within the space delimited by the diffuser bowl () and the cover (). The diffuser bowl () and/or the cover () comprise a section () that is shaped, in particular deep-drawn, into an indentation, forming at least partially a circumferential section of the inner wall ().

The invention relates to an inflator (), especially for a vehicle safety system, comprising a combustion chamber () containing a pyrotechnical solid propellant bed (). In accordance with the invention, an igniting mixture () is located in the combustion chamber (), wherein a filler element (') is arranged to be movable between the igniting mixture () and the solid propellant bed () in the idle state of the inflator ().

Inflator, especially for a vehicle safety system, airbag module, vehicle safety system and method of manufacturing and operating an inflator

An inflator for a protective device in a vehicle includes a diffuser () forming a substantially rotation-symmetric external housing of the locator with a closing member (), wherein the diffuser () includes a plurality of discharge orifices () arranged in a row, and which are of circular shape. The inflator also includes a circumferential wall () which surrounds a combustion chamber () and a filter () which extends at least partially along the wall (), wherein the wall () has at least one supporting portion () which constitutes an axial support for the filter () and is integrally formed with the wall (), and wherein either plural supporting portions () are formed by embossed beads, the heads being spaced apart from each other in circumferential direction, and wherein a supporting portion () is formed by a completely circumferential embossed bead.

Inflator and airbag module

An inflator for a protective device in a vehicle includes a diffuser () forming a substantially rotation-symmetric external housing of the inflator with a closing member (), wherein the diffuser () includes a plurality of discharge orifices () arranged in a row, and which are of circular shape. The inflator also includes an igniter sleeve () which at least partially encloses an igniter () and an igniter chamber () filled with a booster charge and is adjacent to a first combustion chamber () filled with fuel, wherein the igniter sleeve (), related to a central axis B of the igniter sleeve (), has overflow orifices () unevenly distributed in circumferential direction.

An inflator for a protective device in a vehicle includes a diffuser () forming a substantially rotation-symmetric external housing of the inflator with a closing member (), wherein the diffuser () includes a plurality of discharge orifices () arranged in a row, and which are of circular shape. The inflator also includes a combustion chamber sleeve () which at least partially encloses a combustion chamber () filled with fuel, wherein the combustion chamber sleeve () is designed such that it changes its shape by pressure formed during combustion of the fuel so as to release a discharge orifice () leading out of the combustion chamber () into a further combustion chamber () of the inflator, for a combustion gas formed during combustion of the fuel.

An inflator for a protective device in a vehicle includes a diffuser () forming a substantially rotation-symmetric external housing of the inflator with a closing member (), wherein the diffuser () includes a plurality of discharge orifices () arranged in a row, and which are of circular shape. The inflator also includes a filter () and a combustion chamber component at least partially enclosing at least one of a combustion chamber () and a combustion chamber sleeve (), wherein the filter () extends in a ring-shaped manner about the combustion chamber () and, at a position of its ring-shaped extension, includes a critical filter portion () which is closer to the combustion chamber component than the remaining filter areas situated at its ring-shaped extension, wherein the critical filter portion () has a reduced thickness compared to areas of the filter that are adjacent to the critical filter portion ().

A gas generator () comprises an outer housing, which has at least two housing parts (), which are connected to each other, in the form of a diffuser bowl () with outflow openings () towards the outside and a cover () directly connected to the diffuser bowl (). Inside the gas generator (), at least one first and one second combustion chamber () are provided, wherein the first combustion chamber () is delimited by an inner wall () and the second combustion chamber () is located within the space delimited by the diffuser bowl () and the cover (). The diffuser bowl () and/or the cover () comprise a section () that is shaped, in particular deep-drawn, into an indentation, forming at least partially a circumferential section of the inner wall ().

Growing community of inventors

Rechtmehring, Germany

Sebastian Bierwirth