Self-Adaptive Venting Airbag
As the airbag inflates, the occupant position and distance sensors help determine the force of deployment. Then, a pyrotechnic actuator initiates a vent mechanism to adjust the performance. In some circumstances, the position of the occupant to the airbag suggests that more gas be allowed to escape from the module, allowing the energy to dissipate more quickly. This technology provides a solution for helping to meet OOP (out-of-position) requirements of FMVSS 208 while using a single-stage inflator.
PHI4 Module Integrated Concept
The PHI4 inflator technology is available as a single-or dual-stage hybrid inflator. The inflator output is varied with regard to the restraint system requirements and is used with advanced airbags. The bags can be packed to allow sequential and gentle deployment, fulfilling OOP requirements. Bag leakage and mechanical and thermal stress of the low-weight plastic housing is reduced because the bag-to-inflator and housing attachment is connected by the PHI4 inflator itself.
PPI5 Module Integrated Concept (MIC)
This concept combines effective restraint performance in a compact and low-weight package. The MIC design is based on the PPI5 inflator technology – a non-azide, single- or dual-stage pyrotechnic inflator. The system has adaptable inflator output, and adjustable gas mass onset; like the PHI4 Module, the PPI5 concept features an uncoated or coated 3D L-shaped bag. All components are packaged in a compact metal housing, using steel stamping technologies to provide design and packaging flexibility.
The compact knee airbag module uses TRW’s SHI2 inflator technology, as well as an airbag that covers the potential knee impact area at the lower part of the instrument panel. This setup helps to provide harmonized occupant kinematics and positioning while reducing and/or balancing chest and lower limb loads. The module features a 2D pillow airbag with internal tethers designed to yield an effective deployment and help reduce tibia loads during a crash. The housing can be configured to suit most vehicle space constraints. The SHI2 can use a visible class-A-surface cover, or a knee airbag module with protective cover, allowing the module to fit into the instrument panel with an integrated airbag door.