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Lap belt tensioner with buckle
The AudiQ7 is equipped with lap belt tensioners, Driver
Seat Belt Tensioner Igniter 2 N297 and Front Passenger
Seat Belt Tensioner Igniter 2 N298 on the driver and front
passenger sides.
When lap belt tensioners are installed, the safety belt of
the automatic belt retractor has a buckle.
When the safety belt is being worn, the lap belt tensioner
in combination with the buckle performs the following
tasks in the event of an accident which meets the criteria
for deployment:
• Separation of the force acting on the pelvis from the
force acting on the thorax.
• Reduced chest compression.
• Reduced upper thigh load.
• Reduced forward displacement of the pelvis.
• Improved interfacing between the pelvis and seat.
637_044
Buckle
Automatic belt retractor
Belt deector
Lap belt tensioner
Coupling
Accident response sequence
In the event of an accident meeting the criteria for deploy-
ment, the airbag control module deploys the safety belt
tensioners and lap belt tensioners. The lap belt tensioner
tensions the part of the safety belt between the occupant’s
pelvis and the buckle.
637_045
Safety belt travel
Overview
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