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Video Safety 1
Video Safety 2
Video Safety 3
Video Safety 4
Video Fire extinguisher
Video History
Video Air Bag 1
Video Air Bag 2
Video Air Bag 3
Video Air Bag 4
Video Air Bag 5
Video Tube Inflator (air bag)
Video Headrest
Video Seat-belt
Video Body Safety
Video NCAP-norms (body)
Video Pedestrian Protection
Video Antilock System
Video ABS/ESP-Hydr. Unit
Video Lighting System
Video Park assist
Video Electr. Dist. Contr. 1
Video Electr. Park Contr. 2
Video Tyre Press. Contr.
Video Heating - A/C
Video Child Safety Seat
Video Reboarder
Video Anti-theft Alarm
Video Armored Cars 1
Video Armored Cars 2
Video Air Conditioning
Video Navigation Systems
Video Steering
Video Tyre (speedlimits)
Video Safety Steering
Video Tachometer
Video Wiper 1
Video Wiper 2
Video Wiper 3
Video Rear wiper
Video Air Heating

Video Safety 1
Video Safety 2
Video Safety 3

          A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

  Airbag 2

As a rule, an airbag consists of a polyamide fabric with an inside lining. It should be filled with nitrogen gas to a pressure of 0,05 bar in about 0,05 seconds (50ms), depending on the impact deceleration rate. The accompanying gas generator is ignited either by the still intact vehicle electrical system, or by a short-time electric accumulator (e.g., a condenser). At the point of full impact (e.g., the head) the pressure amounts to about 0,6 bar.

Given that an inflated airbag would hinder any rescue operation, the calculated pressure loss is almost as important as the inflation. The one in the above picture has, for this reason, at the back of the impact side, suitable openings. Unfortunately, the incredibly fast processes are not possible without a certain amount of heat developing. Hybrid generators avoid this by mixing a smaller portion of the solid propellant with the, up to 500 bar pressurised cold gas (mostly Argon), which is kept in a small steel container.

There are, by the way, still those who believe, that in the case of an accident, they can absorb the impact force with their (strong) upper arms. This is why some believe, they can do without the safety belt. Wishful thinking I'm afraid. At an impact speed of only 11 km/h this is generally no longer possible. At 50 km/h, the force to be absorbed would amount, even with a relatively light body-weight, to more than 1 ton. This would be like having a compact-car placed on your back when lying in the push-up position. At 100 km/h, it corresponds to a fall from a height of about 40 meters. 11/08               Top of page               Index
2001-2015 Copyright programs, texts, animations, pictures: H. Huppertz - E-Mail
Translator: Don Leslie - Email:

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