Trw Airbag Systems Gmbh

Zf Automotive Germany Gmbh

Zf Airbag Germany Gmbh

Zf Airbag Germany Gmnh

Christian Jung

Thomas Kapfelsperger

Achim Hofmann

Detlef Last

Michael Schmökel

Daniel Hillmann

Sebastian Bierwirth

Hans-Peter Neumayer

Johannes Ebner

Michael Gabler

Bernd Weber

Lorenz Seidl

Georg Tautschnig

Anja Esau

Maximilian Bergmann

Martin Oberstarr

Ning Wei

Uta Isenmann

Elmar Bendel

Andreas Tischer

Wolfgang Tengler

Michael Lemm

Achim Hoffmann

A safety system () for an automotive vehicle () comprises a gas tank () in which pressurized gas is stored, a valve () associated with the gas tank (), at least one airbag () connected to the valve () via a fluid line (), and a control device (). In the control device () vehicle information () is stored and the control device () is configured to control the valve () in an accident situation of the automotive vehicle () on the basis of the vehicle information () and to fill the airbag () with the gas stored in the gas tank (). The invention further shows a method of controlling a safety system of an automotive vehicle and a control device.

Safety system for a motor vehicle, method for controlling a safety system, and control unit

The disclosure relates to a diffusor for a gas generator of an airbag module, comprising a substantially tubular base body with a longitudinal axis, a baffle cap axially connected to the base body at a first end of the diffusor and a connecting device configured at a second end of the diffusor opposite to the first end. At least one outflow opening is formed in an outer wall of the tubular base body such that gas can flow out of an interior of the diffusor substantially in parallel to a longitudinal axis in the direction of the first end and the second end from the diffusor. The baffle cap is free from an outflow opening. The disclosure further relates to a gas generator comprising such a diffusor, as well as an airbag module including such a gas generator. Moreover, a method for manufacturing the diffusor is also proved.

Diffusor for a gas generator, gas generator with such diffusor and manufacturing method for such diffusor

In an assembly group comprising a cap of a tubular gas generator and a deflector element that deflects gas flowing out of at least one outflow opening of the cap to at least one discharge opening of the deflector element, a deflection surface of the deflector element is arranged radially outwardly of the outflow opening. At least two securing arms of the deflector element extend through the outflow opening and engage behind an edge defining the outflow opening on an inside in a positive connection with the cap. The cap is fixed firmly to an axial end of the tubular gas generator. Subsequently, the deflector element is slid from an outside of the cap with its securing arms through the outflow opening, the securing arms forming a positive connection with the edge of the outflow opening which fixes the deflector element firmly to the cap.

Assembly group consisting of a cap of a tubular gas generator and a deflector element, tubular gas generator and method for manufacturing a tubular 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 gas generator (), particularly a pyrotechnical tube gas generator, with an axial longitudinal direction (L), comprising an ignition unit (), a combustion chamber () axially mounted downstream from the ignition unit () and comprising a combustion chamber bottom () forming a combustion chamber outlet (), and a filter chamber () that is axially mounted downstream of the combustion chamber (). According to the invention, at least one guiding sleeve () and a front-side baffle plate () are formed in the filter chamber, a first end () of the guiding sleeve (), on the side of the combustion chamber, being axially mounted downstream from the combustion chamber bottom (), and a second end () of the guiding sleeve () being associated with the baffle plate (), a first deflection section being formed on the baffle plate () and the guiding sleeve () which allows a gas flow to an outer side of the guiding sleeve () into an annular first discharge chamber ().

Gas generator, airbag module, vehicle safety system and method for purifying a pyrotechnically produced gas

The invention relates to a propellant cage () for an inflator, especially for a tubular inflator of an airbag module, comprising a substantially tubular base () which forms, on the one hand, a gas inlet opening () and, on the other hand, a gas outlet opening () along its longitudinal axis (L), wherein at least one lateral gas flow opening () is configured in a circumferential wall () of the base (), wherein the base () includes a radially outwardly extending collar () having at least one frontal gas flow opening () in the area of the gas flow opening ().

Propellant cage for an inflator, inflator comprising such propellant cage operating method and method of guiding a shock wave of an inflator

An adaptive deployable restraint element () for a vehicle safety system comprising at least two leg elements () at least in portions arranged in V-shape relative to each other between which at least one cross brace () connecting the leg elements () is arranged, wherein the leg elements and/or the cross brace () are/is inflatable. The invention further relates to an airbag module and an occupant safety system comprising such restraint element as well as to the use of the fin ray effect in an adaptive restraint element.

Adaptive, deployable restraint element for a vehicle safety system, airbag module, and vehicle safety system having a restraint element of this type, and use of the fin ray effect in an adaptive restraint element

The invention relates to a gas generator () for a vehicle occupant safety system comprising an outer casing () and a filter structure () for purifying and/or cooling gas released inside the outer casing (), wherein the filter structure () is integrated in the outer casing (). The invention further relates to an airbag module and a vehicle occupant safety system comprising said gas generator as well as to a manufacturing method.

Gas generator for a vehicle occupant safety system, airbag module and vehicle occupant safety system comprising a gas generator of this type, and production method

An inflator (), especially for a vehicle safety system, includes a combustion chamber () in which a solid propellant () combustible under the generation of gas is accommodated, and a compressed gas chamber () containing compressed gas (), wherein even in the non-activated state of the inflator () a fluid communication exists between the combustion chamber () and the compressed gas chamber (). The compressed gas () contains at least one inert gas as well as oxygen and at least one combustible gas, wherein the combustible gas is provided at a concentration at which no self-supporting conversion of the combustible gas with oxygen takes place.

Inflator, airbag module and vehicle safety system

An inflator (), especially for a vehicle occupant restraint system, comprising a combustion chamber () in which solid propellant () adapted to be burnt off while forming a gas is accommodated, a storage chamber () containing a pressure gas (), an igniter () and a component () arranged between the combustion chamber () and the storage chamber (). There is at least one flow communication between the storage chamber () and the combustion chamber (). The component () includes an additional weakened zone () adapted to be destroyed upon activation of the inflator () so as to permit flow of gas from the combustion chamber () into the storage chamber ().

Inflator

An inflator has an elongate outer housing () which has at least one discharge opening () and which contains a compressed gas container () and an igniting unit () provided at a first axial end () of the compressed gas container (). The igniting of said igniting unit generates a shock wave which, in a shock wave direction (S), enters the compressed gas container () at the first axial end thereof and which passes at least through some sections of the compressed gas container (). The discharge opening () is arranged away from the first axial end of the compressed gas container () and is closed by a bursting membrane () which can be destroyed by the shock wave, wherein the bursting membrane () is not oriented perpendicularly to the shock wave direction (S). The compressed gas container () has a deflecting device () which deflects the shock wave running through the compressed gas container () from the shock wave direction (S) in the direction of the bursting membrane ().

Gas generator

A gas generator has an igniter and a compressed gas container which contains a first filling gas and has an outflow opening that is closed by a first bursting diaphragm. Upon activation of the gas generator the igniter produces a shock wave which runs at least in part through the compressed gas container before destroying the first bursting diaphragm. The compressed gas container is filled with a mixture of the first filling gas and at least one second substance having a molar mass higher than that of helium, the proportion of the second substance being between 1 and 13 mole percent of the total filling quantity or reaching, at maximum, the total mass of the first filling gas, and the first filling gas being helium, hydrogen, or a mixture of the two gases.

A gas generator comprises a container () filled with a pressurized fluid () and having an outflow opening (), and a piston () which is displaceably arranged in the container (). The piston has a shutter opening () dividing the container () into a first chamber () and a second chamber (), the first and second chambers () being filled with the fluid (). The piston () on activation of the gas generator () and when the outflow opening () has been opened, is moved by a pressure prevailing in the second chamber () from a predetermined initial position (AP) in the direction towards the outflow opening () into an end position (EP) in which the end volume of the first chamber () is significantly reduced compared with the start volume of the first chamber (). There is also proposed a method of operating such gas generator.

Growing community of inventors

Mühldorf, Germany

Christian Jung