This safety feature enhances seatbelt effectiveness during a crash by tightening the belt instantly and then managing the pressure on the occupant’s body.
01. Seatbelt Pre-tensioner – Prevents chest injuries from excessive belt force.
How it works: Uses a small explosive charge or spring mechanism to retract slack in the seatbelt, pulling the occupant firmly back into the seat and reducing forward movement.
02. Force Limiter – Prevents chest injuries from excessive belt force.
How it works: After the pre-tensioner tightens the belt, the force limiter allows a controlled amount of belt payout, reducing pressure on the chest while still keeping the occupant restrained.
Key Benefits:
- Improves occupant positioning during airbag deployment.
- Reduces risk of chest and rib injuries.
- Works in tandem with airbags for better overall protection.