CASPER. Car-to-CRS Interface. EPOCh and CASPER Workshop March 13 th -15. Berlin, Germany CHILD ADVANCED SAFETY PROJECT FOR EUROPEAN ROADS.

Transcription

1 CHILD ADVANCED SAFETY PROJECT FOR EUROPEAN ROADS Car-to-CRS Interface EPOCh and CASPER Workshop March 13 th -15 th 2012 Berlin, Germany

2 Agenda Introduction CASPER General seat geometry Interface for belted CRS Interface for ISOFIX CRS Ideas for 3rd ISOFIX anchorage point Interface for ISOFIX booster Development of booster CRF 2

3 Introduction Knowledge of car-to-crs interface is important for CRS design Homologation Test procedures Assessment of car-to-crs interface based on fitting test results 3

4 Car Seat Geometry CASPER front passenger (n=362) rear outer (n=355) rear center (n=297) no. of observations [-] seat cushion angle [ ] 4

5 Car Seat Geometry 140 rear outer (n=300) rear centre (n=249) CASPER 120 number of observations [-] angle between seat cushion and backrest [ ] 5

6 Car Seat Geometry 100% front passenger seat (n=268) rear outer (n=262) rear centre (n=206) 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% distance CR to roof [mm] 6

7 Belted CRS 60 CASPER no. of observations [-] CRS fitting problems observed n= distance lower belt anchorages [mm] 7

8 ISOFIX CRS 400 ISOFIX with TT ISOFIX w/o TT no ISOFIX CASPER no. of observation [-] front passenger seat rear outer rear centre 8

9 ISOFIX CRS CASPER n= no. of observation [-] angle between ISOFIX anchorages and front end seat cushion [ ] 9

10 ISOFIX CRS CASPER n=342 no. of observations [-] distance ISOFIX to CR X [mm] 10

11 ISOFIX CRS n= no. of observation [-] outboard inboard distance between mid plane seat and mid plane ISOFIX anchorages [mm] 11

12 ISOFIX CRS n= no. of observation [-] below CR point above CR point distance between CR point and ISOFIX anchorages in Z direction [mm] 12

13 ISOFIX CRS 140 n= no. of observation [-] distance from ISOFIX to front end seat cushion [mm] 13

14 ISOFIX CRS front passenger seat (n=42) rear outer (n=342) percentage [%] distance to floor [mm] 14

15 ISOFIX CRS ISOFIX anchorages in approx 10% of the cars are difficult to access observations [-] ISOFIX too far back ISOFIX too low w.r.t. CR ISOFIX too low w.r.t seat bight interference with belt seat bight too narrow slits in cover too small 15

16 ISOFIX CRS F2 F2X F3 not specified CASPER share of ISOFIX positions [%] front passenger seat (n=52) rear outer (n=345) rear centre (n=19) 16

17 ISOFIX CRS 60 F2 F2X F3 R1 R2 R3 L1 L2 not specified only specific share of ISOFIX positions [%] front passenger seat (n=52) rear outer (n=345) rear centre (n=19) 17

18 Administrative ISOFIX Obstacles ECE R16 requires car manufacturer to include table with suitable ISOFIX size classes in manual For universal and semi universal ISOFIX CRS For semi-universal CRS ECE R44 requires the CRS manufacturer to fitting test their product Contradicting information possible 18

19 ECE R16 Template CASPER 19

20 Car Manual Example CASPER 20

21 Car Manual Example CASPER 21

22 Car Manual Example CASPER 22

23 Ideas for 3rd ISOFIX Anchorage Point In the beginning of the work of GRSP IG CRS the idea to define a third ISOFIX anchorage point was reactivated Two possibilities Heel kick area Below seat cushion 23

24 Possible location 3rd ISOFIX anchorage point ISOFIX anchor (set to 0-0) top end seat cushion bottom seat cushion floor Z [mm] possible reception area of 3rd ISOFIX point Lancia Delta Audi TT I Nissan X-Trail Mazda CX7 FIAT Croma X [mm] 24

25 ISOFIX Booster CRS front passenger seat (n=42) rear outer (n=342) rear centre (n=17) percentage [%] distance inboard ISOFIX to inboard lower belt anchorage [mm] 25

26 Development of Booster CRF ISO WG 1 started to develop a booster CRF Proposal based on fitting test results with 4 ISOFIX booster in a large no. of cars Cars for development of geometry Problems observed in some of the CRS Proposal will be distributed after final check 26

27 Problems to use ISOFIX and belt at the same time no ISOFIX - buckle interference ISOFIX - buckle interference share of observations [%] CRS 1 (n=148) CRS 2 (n=151) CRS 3 (n=118) CRS 4 (n=223) 27

28 Interference between booster and car body 100 no interference interference 90 share of observations [%] CRS 1 (n=148) CRS 2 (n=151) CRS 3 (n=118) CRS 4 (n=223) 28

29 Development of Booster CRF Car selection Car CRS 1 observation CRS 2 observation CRS 3 observation CRS 4 observation 1 Super Mini C-pillar contact C-pillar contact No problem Not tested Z = 70 mm Z = 65 mm 2 Small family car Roof frame contact Roof frame contact No problem No problem Z = 55 mm Z = 25 mm 3 Executive C-pillar contact C-pillar contact No problem Not tested Z = 50 mm Z = 15 mm 29

30 Development of Booster CRF Car selection Car CRS 1 observation CRS 2 observation CRS 3 observation CRS 4 observation 4 Small family car C-pillar contact C-pillar contact No problem C-pillar contact Z = 120 mm Z = 160 mm Z = 20 mm 5 Side structure No problem No problem No problem MPV 6 Large family car Roof frame contact Roof frame contact Not tested Not tested Z = 75 mm Z = 30 mm 30

31 CRF Proposal CASPER 31

32 CRF Proposal CASPER 32

33 Acknowledgement The work was supported by CSC Car Safety Consulting by providing car data and fitting test observations 33

34 Thank you Heiko Johannsen Verein für Fahrzeugsicherheit Berlin e.v. 34