1995 Oldsmobile Achieva Owner's Manual - Page 30
1995 Oldsmobile Achieva Manual
Page 30 highlights
When should an air bag inflate? The airbag is designed to inflate in moderate to severe frontal ornear-frontal crashes. The air will inflate bag only if the impact speed is abovethe system's designed "threshold level." If your vehicle goes straight into a wall that doesn't move or deform, the threshold level is about 9 to 16 mph (14 to 26 km/h). The threshold level can vary, however, with specific vehicle design, that so it can be somewhat above or below this range. If your vehicle strikes something that will move or deform,such as a parked car, the threshold levelwill be higher. The air bag is not designed to inflate in rollovers, side impacts, or rear impacts, because inflation would not help the occupant. In any particular crash, no one say whether an air can bag should have inflated simply because of the damage to a vehicle or because of what the repair costs were. Inflation is determined by the angleof the impact and the vehicle's deceleration. Vehicle damage is only one indication of this. What makes anair bag inflate? In a frontal ornear-frontal impact of sufficient severity, the air bag sensing system detects that the vehicle is suddenly stopping as a result of a crash. The sensing system triggers a chemical reaction of the sodium azide sealed in the inflator. The reaction produces nitrogen gas, which inflates the air bag. The inflator, air bag, and related hardware are allpart of the air bag module packed inside the steering wheel. How does an air bag restrain? In moderate to severe frontal or near-frontal collisions, even belted occupants can contact thesteering wheel. The air bag supplements the protection provided by safety belts. Air bags distribute the force the impact of more evenly over the occupant's upper body, stopping the occupant more gradually. But air bags would not help you in many types of collisions, including rollovers and rear and side impacts,primarily because an occupant's motion is not toward the air bag. Air bags should never be regarded as anything more than a supplement to safety belts, and then only in moderate to severe frontal or near-frontal collisions. 1-22