Airbag module and arrangement and method thereof in a vehicle

An airbag arrangement for a vehicle, comprising:

• an airbag module comprising:
• a module housing having a connection opening;
• an airbag having a connection opening, the airbag being connected to the housing with the connection openings being aligned, the airbag having a first chamber, a second chamber separated by a separation line, and an overflow opening communicating the first and second chambers;
• and
• a gas generator for supplying gas to the airbag via the connection openings,
• wherein the airbag connection opening is provided on one side of the first chamber and the overflow opening is provided on an opposite side of the first chamber,
• wherein when the airbag deploys, the separation line between the first and second chambers is positioned substantially transversely with respect to a longitudinal axis of the vehicle,
• wherein the airbag is twisted about the module housing, substantially about an axis of the housing connection opening so that as the first chamber inflates, the first chamber rests against a vehicle part and generates a torque against the vehicle part against which the first chamber is stably positioned,
• wherein the second chamber expands in front of and toward a vehicle seat after the first chamber has been stably positioned.

A method of inflating airbag in a vehicle, comprising the steps of:

• providing an airbag module comprising:
• a module housing having a connection opening;
• an airbag having a connection opening, the airbag being connected to the housing with the connection openings being aligned, the airbag having a first chamber, a second chamber separated by a separation line, and an overflow opening communicating the first and second chambers;
• and
• a gas generator for supplying gas to the airbag via the connection openings,
• providing the airbag connection opening on one side of the first chamber and the overflow opening on an opposite side of the first chamber,
• placing the separation line between the first and second chambers substantially transversely with respect to a longitudinal axis of the vehicle,
• connecting the airbag twisted about the module housing, substantially about an axis of the housing connection opening so that as the first chamber inflates, the first chamber rests against a vehicle part and generates a torque against the vehicle part against which the first chamber is stably positioned,
• inflating the second chamber after the first chamber has been stably positioned.