Gas generation with reduced NOx formation
AssigneeAutoliv ASP, Inc.
InventorsIvan V. Mendenhall, Robert D. Taylor, David W. Parkinson, Robert G. Smith, Karl K. Rink
Life of this patent
Estimating the term…
Abstract
Gas generating compositions containing or including a sufficient quantity of a non-nitrate containing ammonia source whereby, upon reaction of the gas generating composition, NOx products are present in the product gas in a reduced amount as compared to reaction product gas resulting from reaction of the same composition without said quantity of non-nitrate containing ammonia source. Also disclosed are associated methods of reducing NOx products present in an effluent of a gas generating composition that upon combustion forms gas useful for inflating a vehicle occupant safety restraint device.
Claims6
A gas generating composition that upon combustion forms product gas useful for inflating a vehicle occupant safety restraint device, the gas generating composition comprising:
- greater than 30 and less than 70 percent by weight of a guanidine nitrate fuel component;
- greater than 30 and less than 70 percent by weight of a metal ammine nitrate oxidizer component;
- greater than 1 and less than 10 percent by weight of a metal oxide burn rate enhancing and slag formation additive;
- and
- greater than 1 and up to about 4 percent by weight of a non-nitrate containing ammonia source whereby, upon reaction of the gas generating composition, NOx products are present in the product gas in a reduced amount as compared to reaction of the same composition without said quantity of non-nitrate containing ammonia source,
- wherein the gas generating composition has a burn rate in excess of 0.45 inches per second at 1000 psi.
Dependencies are inferred from the claim text.