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Dual Belt Pretension and Its Potential for Occupant Protection in Frontal Impact
Published December 02, 2002 by Fraunhofer Institut Chemische Technologie in Germany
Event: Airbag 2002
The objective of this paper is to present the dual belt pretension as a means to improve occupant protection in frontal impact. Findings from accident investigations showed reduction of injury frequency for belted occupant in general as a result of improvements in vehicle structure and occupant restraint systems. There is however still a concern as regards the protection of abdomen and lower legs. Abdominal protection, thanks to anti-submarining devices, shows some improvements. As regards lower leg, despite a considerable reduction of intrusion in the footwell area, the severity and nature of injuries requires understanding and optimized solutions. It is believed that dual pretension combined with anti-submarining system in the seat, will have a potential to address these injuries. The paper presents the system, its performance and the possibilities that such an approach may offer for future developments.