GTR Head restraints ES62 08 09 2006 Page

GTR Head restraints ES-62 08. 09. 2006 Page 1 GTR Head restraints Dynamic test procedure Trigger-point in dynamic test procedure HR-7 -8

GTR Head restraints ES-62 09. 06. 2005 Page 2 GTR Head Restraints Dynamic test procedure – trigger point HR-7 -8 FMVSS 202 a provides a dynamic test procedure as compliance option for front outboard designated seating positions – full vehicle sled test (without wheels, fluids) – synthetic sinusoidal pulse peak acceleration: 86 m/s² (corridor defined) max velocity (delta v): 17, 3 km/h ± 0, 6 km/h – 50 th-percentile male Hybrid III test dummy (49 CFR § 572, Subpart E) – angular rotation between head and torso 12° – HIC 15 500

GTR Head restraints ES-62 09. 06. 2005 Page 3 GTR Head Restraints Dynamic test procedure – trigger point HR-7 -8

GTR Head restraints ES-62 09. 06. 2005 Page 4 GTR Head Restraints Dynamic test procedure – trigger point HR-7 -8 Active head restraint system – reducing of backset in case of rear end collision by moving head restraints front surface; – energy store (e. g. preloaded spring, pyrotechnic actuator); – Activation by control unit (e. g. airbag-control-unit) – Activation dependant on algorithm which is implemented in control unit and is based on various sensor signals received in real world crash;

GTR Head restraints ES-62 09. 06. 2005 Page 5 GTR Head Restraints Dynamic test procedure – trigger point HR-7 -8 Comparison of vehicle accelerations in test procedures concerning rear end collisions – FMVSS 202 a dynamic test; – barrier test (with equivalent velocity change)

GTR Head restraints ES-62 09. 06. 2005 Page 6 GTR Head Restraints Dynamic test procedure – trigger point HR-7 -8 Barrier test for rear end collision Dynamic test with movable barrier to test for vehicle in rear end collisions. The barrier test shall cause a corresponding velocity change (energy) to the FMVSS 202 a dynamic test; The impact speed of the barrier is vehicle specific – movable barrier (longitudinal direction) impacts vehicle at standstill from rear; – barrier weight 1400 kg; – 10° angle of barrier to vehicle longitudinal axis; – 40% offset; – approx. 35 km/h barrier impact speed (dependant on mass of struck vehicle);

GTR Head restraints ES-62 09. 06. 2005 Page 7 GTR Head Restraints Dynamic test procedure – trigger point Acceleration [ m/s² ] Comparison of sensed vehicle accelerations barrier test FMVSS 202 a Time [ s ] Acceleration sensor signal at vehicle body (B-pillar position) HR-7 -8

GTR Head restraints ES-62 09. 06. 2005 Page 8 GTR Head Restraints Dynamic test procedure – trigger point Deployment of active head restraint The deployment algorithm of an active head restraint is contained in the control unit. (e. g. airbag control unit) The deployment algorithm evaluates various sensor signals (e. g. linear acceleration; rotational acceleration, deformation) The software and data in the control units contain: – plausibility checks of sensor signals; – discrimination routines for crash severity; HR-7 -8

GTR Head restraints ES-62 09. 06. 2005 Page 9 GTR Head Restraints Dynamic test procedure – trigger point The active head restraint may not deploy if vehicle is subjected to a dynamic test according to FMVSS 202 a. The active head restraint will deploy if vehicle is subjected to a rear end collision with a velocity change of the vehicle of 17, 3 km/h. HR-7 -8

GTR Head restraints ES-62 09. 06. 2005 Page 10 GTR Head Restraints Dynamic test procedure – trigger point HR-7 -8 Proposal for active head restraints in dynamic test procedure – Dynamic test procedure according to FMVSS 202 a with battery installed and ignition “ON”; (Airbag system operable) – Usage of trigger point for active head restraints in dynamic test procedure according to FMVSS 202 a on request of the vehicle manufacturer; – Vehicle specific trigger point according to manufacturer’s information; – Manufacturer must provide data of a standardized barrier test (rear end collision) with energy level (delta v 17, 3 km/h) of FMVSS 202 a pulse;

GTR Head restraints ES-62 09. 06. 2005 Page 11 GTR Head Restraints Dynamic test procedure – trigger point End of presentation Thank you for your attention HR-7 -8