Gas generator

Abstract

The present invention provides a gas generator, including: an ignition device chamber arranged at a first end opening of a cylindrical housing; a diffuser portion provided with a gas discharge port and arranged at a second end opening opposite to the first end opening in a longitudinal axial direction of the cylindrical housing; a pressurized gas chamber arranged between the ignition device chamber and the diffuser portion; a first rupturable plate closing the first end opening between the ignition device chamber and the pressurized gas chamber; a second rupturable plate closing the second end opening between the pressurized gas chamber and the diffuser portion; an igniter and a molded article of a gas generating agent being accommodated in the ignition device chamber; a gas which serves as a gas source being charged in the pressurized gas chamber under a high pressure; and an amount A (J/msec) of energy generated per unit time from the molded article of the gas generating agent charged in the ignition device chamber, a cross-sectional area B (cm2), orthogonal to the longitudinal axial direction of the cylindrical housing, of the pressurized gas chamber at a portion proximate to the ignition device chamber, and a density C (g/cm3) of the gas charged in the pressurized gas chamber satisfying an energy control factor represented by the following equation (I): A/B×C=320 to 490  (I).

Dependencies are inferred from the claim text.