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Pretensioners (gasifier)
Work pretensioner When a frontal collision at a certain angle in the event of a collision of a vehicle electrical circuit control gas generator in an electronic control unit SRS, igniter that ignites the gas generator. Produced gas generator gas vyzyvet premeschenie piston in the housing module of the intake manifold (cylinder), which acts on the ratchet (rack gear). The ratchet drives the piston gear and pinion gear - Planetary gear (planet gears). Finally, the fabric belt is retracted (pulled) by rotating inertia reel. Thus pretensioner can reduce the chance of injury, the driver (or passenger) by pulling his belt. This prevents the possibility of moving the driver (or passenger) forward and hitting the steering wheel or the dashboard of the car in a collision.
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