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Inflatable Curtain (IC) Activation in L-type Side Impacts
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 12, 2010 by SAE International in United States
Annotation ability available
The Inflatable Curtain (IC) has shown great potential to reduce head injuries in side impacts. This study explores and presents enhanced performance in two steps of improved activation algorithms.
Crash data analysis, 21 full scale crash tests and component tests in a custom built drop tower rig have been performed. The IC performance in wider crash scenarios, including side impacts outside the occupant compartment (L-type impacts), was evaluated. Both statistical crash data and in-depth studies were used.
It was found in the analysis of real life crashes that moderate to fatal head injuries can occur without intrusion in the occupant compartment. In L-type side impacts, the motion of the occupant relative to the vehicle interior may cause a head impact of sufficiently high severity to cause moderate to severe head injuries. A combined analysis of real world crash data and crash test results indicates that a substantial reduction in moderate to fatal head injuries can be achieved.
As a result, substantial improvements in L-type impacts were achieved by introducing an IC activation method with new associated threshold tests. The improved sensor algorithm utilizes the tunnel acceleration signals. In a second step, to further optimize the activation performance, a yaw rate sensor and associated algorithms will be introduced. This improves discrimination of L-type impacts and enables a selective protection system activation strategy for best real life safety benefits.
CitationHardå, P., Lindman, M., Svanberg, B., Axelson, A. et al., "Inflatable Curtain (IC) Activation in L-type Side Impacts," SAE Technical Paper 2010-01-1156, 2010, https://doi.org/10.4271/2010-01-1156.
Rear Impact, Side Impact, and Rollover, 2010
Number: SP-2270; Published: 2010-04-13
Number: SP-2270; Published: 2010-04-13
- SAE International Surface Vehicle Standard “Collision Deformation Classification,” SAE Standard J224 March 1980
- Association for the Advancement of Automotive Medicine (AAAM) “The Abbreviated Injury Scale” 1985 Des Plaines IL, USA 1985
- Isaksson-Hellman, I. Norin, H. “How Thirty Years of Focused Safety Development has Influenced Injury Outcome in Volvo Cars” 49th AAAM Annual Scientific Conference Boston, USA 2005
- Insurance Institute for Highway Safety (IIHS) “Status Report” 38 8 August 26 2003
- Chipman, M.L. Desapriaya, E. Brussoni, M. Han, G. et al. “The Risk of Injury and Vehicle Damage in Intersection Right-Angle Crashes,” SAE Technical Paper 2005-01-0285 2005
- NHTSA “Traffic Safety Facts 2007, A Compilation of Motor Vehicle Crash Data from the Fatality Analysis Reporting System and the General Estimates System”
- ECE 95 United Nations July 20 1995
- Mellander, H. Ivarsson, J. Korner, J. Nilsson, S. “Side impact protection system - A description of the technical solutions and statistical and experimental tools” 12th International Technical Conference on Enhanced Safety of Vehicles Gothenburg, Sweden 1989
- Lundell, B. Edvardsson, M. Johansson, L. Korner, J. et al. “SIPSBAG - The Seat-Mounted Side Impact Airbag System,” SAE Technical Paper 950878 1995
- Öhlund, A. Palmertz, C. Korner, J. Nygren, M. Bohman, K. “The Inflatable Curtain (IC) - A New Head Protection System in Side Impacts” 16th ESV Conference Windsor, Canada 1998
- Claeson, N. Ryrberg, S. “The Door Mounted Inflatable Curtain,” SAE Technical Paper 2006-01-1437 2006
- Pipkorn, B. Mroz, K. Halldin, P. Lanner, D. Kleiven, S. Jakobsson, L. Backlund, M. Iraeus, J. Holmqvist, K. “Mathematical Occupant Models in Side Impacts - A Validation Study with Particular Emphasis on the Torso and Shoulder and their Influence on Head and Neck Motion” Proceedings of the IRCOBI Conference 2008