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A Method to Evaluate the Energy Capability of Seat Belt Pretensioners
Technical Paper
1999-01-0080
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Current performance specifications of seat belt pretensioners include web retraction and belt load. These criteria may adequately represent the performance requirements of a pretensioner in a restraint system. However, by themselves, they are inadequate to evaluate potential design modifications to improve efficiency levels and thus increase energy output of the pretensioner.
This paper demonstrates a non-linear phenomenon associated with web retraction and the belt load during pretensioning. It is this non-linear behavior that promotes the insensitivity for use of web retraction in predicting the energy output of a pretensioner with design modifications. This paper proposes an energy measuring method that can be used to more accurately measure the energy output of a pretensioner and then be used to evaluate the effects on output of a pretensioner due to design modifications.
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Citation
He, S. and Wilkins, M., "A Method to Evaluate the Energy Capability of Seat Belt Pretensioners," SAE Technical Paper 1999-01-0080, 1999, https://doi.org/10.4271/1999-01-0080.Also In
References
- Zuppichini F. Effectiveness of a Mechanical Pretensioner on the Performance of Seat Belts SAE Paper 905139 (FISITA) 1990 Type any references over these paragraphs
- Miller J. Occupant Performance With Constant Force Restraint Systems SAE Paper 960502 1996
- Arbeitskreis Specification