Arrangement for an airbag gas generator
First Claim
Patent Images
1. An airbag gas generator arrangement comprising:
- a propellant chamber,a filter chamber arranged adjacent the propellant chamber for accommodating flow of airbag propellant gas therethrough to an airbag cushion, said filter chamber providing first and second alternative gas flow paths therethrough with said alternative gas flow paths having respective different filter resistances,and temperatures dependent change-over means for controlling the flow of gas via the first and second alternative gas flow paths as a function of ambient temperature at the generator.
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Abstract
An airbag gas generator is disclosed which includes a propellant chamber and a filter chamber arranged adjacent the propellant chamber for filtering flow of airbag propellant gas therethrough on its path to an airbag cushion. The filter chamber is provided with a plurality of alternative gas flow paths therethrough which have respective different filter resistances. Temperature dependent change-over devices are provided for controlling the flow of gas through the respective alternative gas flow paths in the filter chamber as a function of the ambient temperature at the generator.
40 Citations
23 Claims
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1. An airbag gas generator arrangement comprising:
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a propellant chamber, a filter chamber arranged adjacent the propellant chamber for accommodating flow of airbag propellant gas therethrough to an airbag cushion, said filter chamber providing first and second alternative gas flow paths therethrough with said alternative gas flow paths having respective different filter resistances, and temperatures dependent change-over means for controlling the flow of gas via the first and second alternative gas flow paths as a function of ambient temperature at the generator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An arrangement for a gas generator of a motor vehicle occupant protection system which includes a filter chamber connected to the propellant chamber by way of openings and equipped with filters for the gas flow, comprising:
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a partition provided in the filter chamber which has at least one first opening and at least one second opening, the second opening being closed, and the first opening leading the gas flow to a first filter package and through this filter package to a blow-out opening leading to an air cushion, wherein the second opening is opened up when a temperature threshold and/or pressure threshold is exceeded, whereby the gas flow is guided through an additional filter package. - View Dependent Claims (16, 17, 18, 19, 20)
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21. An arrangement for a gas generator of a motor vehicle occupant protection system which includes a filter chamber connected to a propellant chamber by way of openings and equipped with filters for the gas flow, comprising:
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a partition provided in the filter chamber (F) which has at least one first opening and at least one second opening, the at least one second opening being covered by means of filters which form a main path for the gas flow, the at least one first opening providing a secondary path for the gas flow which has significantly less resistance than the main path, and movable cover means for covering the at least one first opening, the characteristics of the material and dimensions of which movable cover means being selected to automatically close the at least one first opening above an adjustable threshold of the ambient temperature. - View Dependent Claims (22, 23)
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Specification