Engineering Design - CAE

Employing computer simulation as an analytical tool for airbag product design and safety analysis can partially replace automotive crash testing, thereby enhancing efficiency, reducing costs, and shortening the development cycle. The CAE Simulation Team, based on the 3D digital models provided by automakers, uses the occupant injury simulation software MADYMO to build dynamic simulation models of vehicle crash occupant restraint systems. These models include both frontal occupant restraint system analyses and side occupant restraint system analyses. By leveraging the validated simulation models, engineers can optimize airbag designs—specifically targeting types such as the Driver's Airbag (DAB) for frontal deployment and the Passenger Airbag (PAB) for side-impact scenarios.

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　　Employing computer simulation as an analytical tool for airbag product design and safety analysis can partially replace automotive crash tests, thereby enhancing efficiency, reducing costs, and shortening the development cycle. The CAE Simulation Team, based on the 3D digital models provided by automakers, uses the occupant injury simulation software MADYMO to build dynamic simulation models of vehicle crash occupant restraint systems. These models include analyses of both frontal and side occupant restraint systems. Once the validated simulation models are established, they can be used to optimize the design of airbags—covering types such as the Driver Airbag (DAB), Passenger Airbag (PAB), Side Airbag (SAB), and Curtain Airbag (CAB). By refining airbag designs through this optimization process, manufacturers can improve the effectiveness of airbags in protecting occupants, while also providing valuable guidance for the development of next-generation airbag technologies.

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Electronic Automotive Safety Restraint System – ECU & Sensors

The central controller serves as the brain of the airbag system, receiving signals from collision sensors and other input devices to determine whether to ignite and deploy the airbag. It also performs self-diagnosis to detect any system malfunctions. The central controller is composed of components such as the ignition controller, driver circuit, storage circuit, and diagnostic circuit. At the heart of the ignition controller lies the ignition control algorithm, which precisely determines the timing of airbag deployment and ensures robust performance even in challenging conditions like rough road surfaces—this is the core technology behind airbag control. Given the diverse structural designs of real-world vehicles and the varying characteristics of collisions they experience, numerous variations of the ignition control algorithm have been developed to seamlessly adapt to different scenarios.

Electronic Automotive Safety Restraint System – Curtain Airbag

The curtain airbag (CAB) covers the upper portion of the vehicle’s inner side panels, providing critical head protection for all occupants seated near the side in the event of a side-impact collision or rollover accident. Positioned above the door frames along the roof rails, the CAB’s coverage area can vary depending on the vehicle’s specific structure—ranging from the A-pillar to the C-pillar or even extending from the A-pillar to the D-pillar. The gas generator can either be mounted in the center of the airbag (closer to the B-pillar) or placed toward the rear end (near the C- or D-pillar). Once triggered by an ignition signal, the curtain airbag inflates within 25 milliseconds, shielding occupants from direct contact with external hard objects and significantly reducing the risk of head injuries.

Electronic Automotive Safety Restraint System – Driver-Side Airbag

Side Air Bags (SABs) are installed on the sides of car seats or inside the doors, providing critical protection to occupants' chests and heads during side-impact collisions. There are generally two main types of side airbags: one is a head-and-chest integrated design, primarily protecting both the chest and head areas; the other is a chest-only airbag, which mainly safeguards the chest, abdomen, and pelvic regions. When used in conjunction with side curtain airbags, these systems deliver exceptional protection. Upon receiving an ignition signal, side airbags rapidly inflate—typically within about 20 milliseconds—to cushion occupants and significantly reduce injury risks during side-impact crashes.

Electronic Automotive Safety Restraint System – Driver-Side Airbag

◆Cover: One-piece / Pull-strap hinge type, made from thermoplastic elastomer TPEE via injection molding ◆Gas Generator: Hybrid gas type / Pyrotechnic type ◆Airbag: 90–120 liters, constructed from nylon 66 ◆Weight: Approximately 2000 grams

Contact Information

EMAIL:business@jinhengsafety.com

TEL:+86-416-3575105

Address: No. 16, 4th Section of Bohai Street, Jinzhou Economic and Technological Development Zone, Liaoning

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