Technical information

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Seat-integrated belt system (SGS)
All the systems have the same goal of reducing belt slack. This is the biomechanical load to which the human body is
subjected after an accident.
Mechanical belt tensioner
On the mechanical belt tensioner, a mechanical sensor detects a crash and triggers the release of the tensioner energy
via a switching mechanism. A force transfer element pulls the seat belt buckle obliquely downwards to tension the seat
belt strap against the occupant's body. When the belt force is subsequently built up, a locking system blocks the seat belt
buckle in any tensioned position. The occupant is therefore secured more effectively to the vehicle.
In the event of a head-on collision, the mechanical impact sensor activates the system. A preloaded spring pulls the seat
belt buckle back. The shoulder and lap belts are tightened.
Pyrotechnic belt tensioner
The pyrotechnic belt tensioner is a further development of the mechanical belt tensioner for reducing belt slack even
more quickly.
The pyrotechnic belt tensioners are activated by the airbag control unit and/or the seat satellites. A pyrotechnic unit is
responsible for tightening the seat belt.
Pyrotechnic retractor tensioner / end fitting pretensioner
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