Adaptive belt force limiter, front left and front right

The pyrotechnic belt force limiter minimizes the load on the upper torso of the front-seat occupants in the event of a severe head-on collision. The danger of injury due to belt forces exerted on the body is reduced. There are 2 torsion shafts installed in the automatic reel. The torsion shafts are intermeshed. Up to a certain load, the belt force is specifically limited by the two torsion shafts. From a certain load, a gas generator is used to de-couple the torsion shafts. Only one of the torsion shafts is connected to the seat belt. This allows the belt force to be smoothly limited for the entire duration of the crash.