What does the seat belt pretensioner function mean?

1 Answers
CharlieLee
07/29/25 8:20pm
Seat belt pretensioner function refers to when there is a sudden change in vehicle speed, the retractor equipped with control and pretensioning devices can tighten the webbing within approximately 0.1 seconds, enhancing restraint on occupants and locking the webbing to prevent forward body movement, effectively protecting occupant safety. Seat belt usage guidelines: The proper way to use seat belts is to position the lap belt below the abdomen, with the shoulder strap crossing the chest cavity and placed at the center of the shoulder, neither too high nor too low. Driving or riding in a vehicle with damaged seat belts is prohibited as they cannot provide adequate protection during collisions. Functions of automotive seat belts: Automotive seat belts serve to restrict movement and provide cushioning, absorbing impact energy, dissipating inertial forces, and preventing or reducing the severity of injuries to drivers and passengers.
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