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How Long Does It Take for an Airbag to Deploy?

1 Answers

DelVera

07/29/25 5:32pm

In the event of a collision, the airbag inflates and deploys in approximately 0.03 seconds, with a deployment speed of up to 320 km/h. Below is the working principle of an airbag: 1. Signal Reception: When a collision occurs while the vehicle is in motion, the airbag sensor first receives the impact signal. If the impact reaches the specified intensity, the sensor activates and sends a signal to the electronic control unit (ECU). The ECU then compares the received signal with its stored data. 2. Signal Transmission: If the conditions for airbag deployment are met, the drive circuit sends an activation signal to the gas generator in the airbag module. Upon receiving the signal, the gas generator ignites the gas-producing agent, generating a large volume of gas. This gas is filtered and cooled before entering the airbag. 3. Airbag Deployment: The airbag rapidly inflates within an extremely short time, breaking through the cushion cover to form an elastic cushion in front of the driver or passenger. It then promptly deflates and contracts, absorbing the impact energy to effectively protect the head and chest, preventing or reducing the severity of injuries.

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How to Use Lights When Overtaking?

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