Browse Publications Technical Papers 980557
1998-02-23

Seat Belt Pretensioners 980557

The somewhat dated FMVSS 208 regulation requires that crash dummies are belted with no slack.
Reality shows that there is 120mm slack in the belt system for a 50 percentile occupant. Test results would yield more then 20% worse injury indexes when taking slack into account.
This presentation will show how pretensioners can reduce injuries, giving a historical perspective from spring loaded systems to current pyrotechnic systems. Future developments using multi-cartridge and multi-piston systems and associated test results will be discussed.

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