Adaptive regenerative inflator

Details Adaptive regenerative inflator Adaptive regenerative inflator

1997-02-18

1998-09-15

Ellis, Christopher P.

Land vehicles

Wheeled

Attachment

280741, B60R 2126

Patent

active

058068848

ABSTRACT:
A regenerative monopropellant inflator providing adaptive performance. The inflator includes a housing defining an interior. A piston is received in the housing and divides the interior into a fuel supply chamber and a combustion chamber. The piston moves through the fuel supply chamber during the regenerative combustion cycle to produce an inflation gas from reaction of the fuel in the combustion chamber. The inflation gas exits the combustion chamber via exit ports. To provide adaptive performance a back pressure may be selectively applied to the piston against its travel. This slows the piston, and thus the gas production of the inflator. Alternatively, the total size of the exit ports could be selectively varied to thus vary the pressure within the combustion chamber, known as throttling. Increased pressure within the combustion chamber causes an increase in the rate of inflation gas production. By selectively varying either the piston back pressure or throttling prior to completion of the gas generation, the performance of the inflator may be adapted to the characteristics of a particular vehicle collision.

REFERENCES:
patent: 3877721 (1975-04-01), Brown, Jr.
patent: 4018457 (1977-04-01), Marlow
patent: 5301979 (1994-04-01), Allard
patent: 5441302 (1995-08-01), Johnson et al.
patent: 5566976 (1996-10-01), Cuevas
patent: 5639117 (1997-06-01), Mandzy et al.
patent: 5692776 (1997-12-01), Rink et al.

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