Gas generator for motor vehicle safety airbag
First Claim
1. A pyrotechnic gas generator for a car airbag the generator including a pyrotechnic charge and being characterized in that it further comprises:
- a pyrotechnic initiator situated in a combustion chamber and suitable for being actuated by a first detection system for detecting an imminent collision state, and/or by a second detection system for detecting an actual collision state;
a gas flow passage between said combustion chamber and said airbag; and
at least one valve suitable for being moved from a first position in which it defines a first flow section to a second position in which it defines a second flow section greater than said first flow section, or vice versa, said valve being arranged in such a manner as to define the greater flow section if the pyrotechnic initiator is actuated by the first detection system.
2 Assignments
0 Petitions
Accused Products
Abstract
The invention relates to a pyrotechnic gas generator (10) for a car airbag (12), the generator including a pyrotechnic charge and a pyrotechnic initiator (28) situated in a combustion chamber (14) and suitable for being actuated by a first detection system (30) for detecting an imminent collision state and/or by a second detection system (32) for detecting an actual collision state. The pyrotechnic gas generator of the invention further includes a gas flow passage (16, 18) between said combustion chamber (14) and said airbag (12), and at least one valve (34) suitable for being moved from a first position in which it defines a first flow section to a second position in which it defines a second flow section greater than said first flow section, or vice versa. In particular, the valve (34) is arranged in such a manner as to define a greater flow section when the pyrotechnic initiator (28) is actuated by the first detection system (30).
14 Citations
11 Claims
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1. A pyrotechnic gas generator for a car airbag the generator including a pyrotechnic charge and being characterized in that it further comprises:
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a pyrotechnic initiator situated in a combustion chamber and suitable for being actuated by a first detection system for detecting an imminent collision state, and/or by a second detection system for detecting an actual collision state; a gas flow passage between said combustion chamber and said airbag; and at least one valve suitable for being moved from a first position in which it defines a first flow section to a second position in which it defines a second flow section greater than said first flow section, or vice versa, said valve being arranged in such a manner as to define the greater flow section if the pyrotechnic initiator is actuated by the first detection system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A safety system for inflating a car airbag, the system being characterized in that it comprises:
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a pyrotechnic gas generator according to claim l; a first detection system for detecting an imminent collision state; and a second detection system for detecting an actual collision state.
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Specification