Warning! Airbags do not replace seat belts. Moreover, when the car is moving, the driver and front passenger must be fastened with seat belts, since in the event of a traffic accident, an inflated airbag itself can cause serious injury to a person not wearing a seat belt.
The SRS system includes the following elements:
- driver airbag module located in the steering wheel hub and consisting of a folded airbag shell, a gas generator and an accelerometer that measures the negative acceleration of the vehicle;
- front passenger airbag module (installed depending on the vehicle configuration), located in the instrument panel on the passenger side and consisting of a folded airbag shell, a gas generator and an accelerometer that measures the negative acceleration of the vehicle;
- an electronic control unit installed under the floor tunnel lining and controlling the system;
- seat belts.
The force of impact during a traffic accident is determined by the electronic control unit (ECU) of the passive safety system using electronic accelerometers. Based on the accelerometer signal, the control unit activates the driver and passenger airbags.
Material is located on the source website: RenaultBook.ru
If the car is equipped with driver and front passenger seat belt pretensioners, the electronic unit, having received a signal from the accelerometers, increases the belt tension before activating the airbags. Pretensioners provide a timely response to emergency deceleration of the car, pulling the driver and passengers to the seat backs, and also prevent them from moving forward by inertia and getting injured from the deployed airbag. In the event of a frontal impact of a certain force, the ECU of the safety system issues a command to the pyrotechnic elements of the belt pretensioners.
Note: The seat belt pretensioner mechanism is always activated before the airbag.