Porsche 928 GT1991, Руководство пользователя

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Air Bag System
The "Air Bag" in combination with the safety
belt makes up a passive safety system which
offers the driver and front seat passenger
the greatest known protection from injuries
in case of accident.
The air bag system is composed of the fol-
lowing 3 major groups:
• Air bag with gas generator and ignition
unit
• Control electronics
• Collision sensors
In case of frontal collision greater than a cer-
tain severity, the collision sensors send a sig-
nal via the control electronics to the ignition
mechanism. In the ignition process, a solid
propellant in the gas generator is combusted
in a fraction of a second. This combustion
generates the gas quantity and pressure
necessary to fill the air bag.
The air bag is located behind the steering
wheel center pad on the driver's side, and
on the passenger side behind the padding
above the glove compartment. Due to the
rapid deflation of the air bag after use, there
is little danger of obstructed vision.
Likewise, the noise of the inflation of the air
bag generally goes unnoticed because of
the collision noise. The air bag protects the
face and upper body, and at the same time
dampens the forward motion of the driver
and passenger.
26
Range of Effectiveness
Even if your vehicle is equipped with an air
bag, the safety belt must be worn at all
times because the air bag system is only ac-
tuated by frontal collisions with an impact of
sufficient severity. See figure for range of ef-
fectiveness.
Below the actuation threshold of the air bag
system, and during types of collisions which
do not cause the actuation of the system, the
seat belts provide the primary protection to
the occupants when correctly worn. There-
fore, all persons within the vehicle must
always wear safety belts (in many states,
state law requires the use of safety belts).
See also chapter "Safety Belts".