Article | The Swedish Section for Detonics and Combustion; Fourth International Disposal Conference | Development of a thermal fuse

Title:
Development of a thermal fuse
Author:
S. Röstlund: Bofors Bepab, Karlskoga, Sweden
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Full text (pdf)
Year:
2006
Conference:
The Swedish Section for Detonics and Combustion; Fourth International Disposal Conference
Issue:
018
Article no.:
017
No. of pages:
1
Publication type:
Abstract
Published:
2007-03-13
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press; Linköpings universitet


In the case of a fire in a vehicle; an airbag system is a potential bomb. The gas-generating substance in an air bag system will slowly heat up to its ignition temperature at which point all of the substance ignites simultaneously. This problem can be overcome if a thermal fuse is used. The thermal fuse should be designed to ignite before the gas-generating substance and hence will prevent an explosion if there is a fire. With new gas-generating substances used in airbag systems; however; new demands are made on thermal fuses. This is because the new substances have lower ignition temperatures than earlier ones. In order to get a satisfying effect from a thermal fuse; its ignition temperature should be a great deal lower than that for the gas-generating substance. The earlier thermal fuse developed by Bepab and currently in use by Autoflator has an ignition temperature between 200 and 225 ¬įC. This value is too high for new gas-generating substances and for this reason a new composition for the thermal fuse had to be developed.

The Swedish Section for Detonics and Combustion; Fourth International Disposal Conference

Author:
S. Röstlund
Title:
Development of a thermal fuse
References:
No references available

The Swedish Section for Detonics and Combustion; Fourth International Disposal Conference

Author:
S. Röstlund
Title:
Development of a thermal fuse
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