Side airbag OOP study
Side airbag TWG Meeting on October 25. 2001
Honda R&D
Outline
•Airbag philosophy and OOP test status.
•OOP test procedure study.
Airbag philosophy and OOP test status
Occupant
Protection
Balance
Frontal airbag system
Side
Effect
Side airbag system
•Top mount airbag
•Seat mount airbag
•De-power inflator
•De-power inflator
•Folding for quick deployment
•Folding for a performance to go
into narrow space
•Material
•Seat tear line structure for depower inflator
•Shape
Multi stage inflator
Crash severity
i-SRS
Occupant Posture Detecting System
i-side airbag system
Airbag philosophy and OOP test status
•Support Side airbag TWG orientation(contribution).
•Challenging High-performance airbag system research and
development.
•Applying side airbag system with OPDS.
•Possibility be met TWG OOP recommendation. (Canadian
MOU)
OOP test procedure study
3.3.2 Test for seat-mounted system
3.3.2.1
3.3.2.2
3.3.2.3
3.3.2.4
3.3.2.5
3.3.2.6
3.3.2.7
OOP test procedure study
HY3 C3Y on Booster seat
3.3.2.1 position is most
important in our airbag
system.
Studied using prototype side
airbags based on NHTSA's
proposal.
a) Dummy setting problems
b) Neck injury mechanism
Injury severity
A (TWG3.2.2.1)<B<C<D
A
B
C
D
OOP test procedure study
To study injury variation of relative location between A/B
module and C3Y Dummy head.
Case 1. Airbag module
height position in seat
Case 2. Dummy height position
along the seat surface
OOP test procedure study
Case 1. Airbag module height position in seat
A
B
A
Position A＝Reference to TWG procedure
Dummy head contacts seat surface
Position B＝Move module 120mm upward
Reference to TWG procedure
Head behind clearance increases 0(A) to 110mm(B)
B
OOP test procedure study
Case 1. Airbag module height position in seat
Nij
Neck Tension
Comparison the injury
criteria of 2 positions
A
A
Contact
B
B
A
B
OOP test procedure study
Case 2. Dummy height position with head contacting the
seat surface
50mm
0
50mm
OOP test procedure study
The phenomenon showed that the
injury criteria reduced in the case
of air bag struck dummy
shoulder area.( See.C)
A Original position
Nij
Neck Tension
Comparison injury criteria
of 3 positions
A
C
C 50mm Up
D
A
C
D 50mm Down
D
OOP test procedure study
Test results
Test result deviations related to the setting procedure
are found.
• Distance between head and airbag module is affected
by airbag module height within the seat.
• Dummy (C3Y) neck injury criteria is very sensitive
to distance between airbag module and head.