Safety Devices in Car essays

Safety Devices in Car essays During a traffic crash, at the moment of impact, people in the car are still traveling at the car's original speed. Just after the car rapidly comes to a stop, the people not wearing seat belts slam into the steering wheel, windshield, or other parts of the car's interior, or are ejected from the car. Seat belts are very effective in reducing deaths and injuries caused in this second collision. The techniques of that is the seat belts use pre-crash tensioners. Within milliseconds, seat belt pre-tensioners tighten safety belts and help prevent belted occupants from sliding and bouncing around during a crash. The seat belts allow passenger to decelerate with the car during the collision instead head on collision with windshield or steering wheel. The seat belts also have a property to bend when crashing. So it increases time in impulse therefore decreases force impact on human. Inertia safety belt reels occurs approximately 6 milliseconds after full frontal impact. Approximately 4 milliseconds later before the head and chest begin to move forward, the air bag sensors trigger the front air bags and the small pyrotechnic charges in the pre-tensioners, which minimize any slack in the safety belt and negate the effects of bulky or layered clothing. The front air bags take approximately 35 milliseconds to fully inflate, which is completed just before the occupant meets the bag, approximately 50 milliseconds after impact. Between 45 and 70 milliseconds after impact, ensuring that the cross belt pressure against the occupants chest remains fairly constant. By avoiding peak loads, the potential for chest injury in very severe impacts is reduced. The function of inertia reel safety belts in effective, it can fasten you to the seat when crashing. The seat belt allows you to travel at the same speed with the car instead of throwing you out toward steering wheels, it can also trigger airbag to inflate. Inflating in a fraction of a seco...