Passenger Air Bag Module

NOTE: Variation in the passenger air bag module deployment is determined by the timing of the first and second stage ignition signals. This facilitates adaptation of the stiffness and timing of the air bag module to optimize occupant protection.


The passenger air bag module is controlled by the RCM which chooses between first or second stage deployment, depending on the occupant status and the crash severity. It consists of a twin stage inflator (as opposed to a single stage inflator) with two air bag electrical connectors to accommodate the twin stage inflation.

The heated gas inflator consists of a high-pressure mix of clean air and hydrogen gas, triggered by two separate ignition squibs. It produces a controlled generation of clean gas to rapidly fill the air bag. It is classified as a stored flammable gas (not as an explosive) and as such, has less restrictive storage and transportation requirements. It produces a very clean burn and almost no particulates and is almost free of any toxins, making disposal or recycling much easier.