Vehicle Fire Extinguisher

• US 20110155398A1
• Filed: 02/18/2011
• Published: 06/30/2011
• Est. Priority Date: 04/15/2003
• Status: Abandoned Application

• Current Assignee: Aerojet-General Corporation (L3Harris Technologies, Inc.)
• Original Assignee: Aerojet-General Corporation (L3Harris Technologies, Inc.)
• Inventors: Wierenga, Paul H., Holland, Gary F.
• Application Number:
  US13/030,543
• Publication Number:
  US 20110155398A1
• Time in Patent Office: Days
• US Class Current: 169/46
• CPC Class Codes: A62C 13/22 with incendiary substances producing pressure gas
• CPC Class Codes: A62C 3/07 in vehicles, e.g. in road vehicles

Abstract

A solid propellant fire extinguisher or a hybrid fire extinguisher is incorporated into a vehicle fire suppression system. The system is activated according to at least one condition selected from the group consisting of acceleration, deceleration, speed, time, temperature, fuel, fuel level, fire, smoke, light transmittance and optical signature.

Claims

1. A fire extinguisher, comprising:

a container containing a propellant and a fluid fire suppressant, wherein the propellant is functional to propel the fluid fire suppressant from the container; and

a surfactant in the fluid fire suppressant to enhance the film-forming capability of the fluid fire suppressant on a fuel.

2. A fire suppression system for a vehicle, comprising:

a fire extinguisher according to claim 1;

an instrument capable of indicating a condition selected from the group consisting of acceleration, deceleration, speed, time, temperature, fuel, fuel level, fire, smoke, light transmittance and optical signature; and

a processor to activate the fire extinguisher based on an indication of one or more conditions.

3. The fire suppression system of claim 2, further comprising distribution pipes connected to the fire extinguisher container to deliver the fluid fire suppressant to nozzles placed in locations to discharge on a fuel spill.

4. The fire suppression system of claim 2, wherein the instrument comprises an acceleration or deceleration sensor and a speed sensor, and the processor activates the fire extinguisher according to at least an acceleration or deceleration condition indicative of a collision and a speed condition indicative of the vehicle slowing down.

5. The fire suppression system of claim 2, wherein the instrument comprises a speed sensor and the processor activates the fire extinguisher according to a speed condition that is indicative of the vehicle stopping.

6. The fire suppression system of claim 2, wherein the instrument comprises a speed sensor and the processor activates the fire extinguisher according to a speed condition that is indicative of the vehicle slowing down.

7. The fire suppression system of claim 2, wherein the instrument comprises an acceleration or deceleration sensor, a speed sensor, and a timer, and the processor activates the fire suppression system provided the vehicle has reached a minimum speed condition, and the time delay after an acceleration or deceleration condition indicative of a collision is adjusted according to the speed that is in excess of the minimum speed at the time of collision.

8. The fire suppression system of claim 2, wherein the instrument comprises an acceleration or deceleration sensor and a fire sensor, and the processor activates the fire suppression system according to a condition of acceleration or deceleration indicative of a collision and a condition of fire being detected.

9. The fire suppression system for a vehicle of claim 3 wherein said reservoir includes a gas generator effective to generate a propellant for establishing a pressure effective to deliver said fire suppressant agent to said distribution system.

10. The fire suppression system for a vehicle of claim 9 wherein said gas generator is a pyrotechnic gas generator.

11. The fire suppression system for a vehicle of claim 10 wherein said propellant is selected to be a solid.

12. The fire suppression system for a vehicle of claim 9 wherein said at least one location about said body includes an underside of said vehicle body.

13. The fire suppression system for a vehicle of claim 11 wherein said at least one location about said body includes an underside of said vehicle body.

14. An automotive vehicle, comprising:

a vehicle body;

a reservoir containing a fire suppressant agent, with said reservoir being mounted in proximity to said body;

a distribution system for receiving the fire suppressant agent from said reservoir and for conducting the fire suppressant agent to at least one location about said body;

a sensor system for determining whether the vehicle has been subjected to an impact and whether the vehicle is moving subsequent to such an impact; and

a controller, operatively connected with said sensor system and said reservoir, for causing said reservoir to initiate delivery of the fire suppressant agent from the reservoir to the distribution system.

15. The automotive vehicle of claim 14 wherein said reservoir includes a gas generator effective to generate a propellant for establishing a pressure effective to deliver said fire suppressant agent to said distribution system.

16. The automotive vehicle of claim 15 wherein said gas generator is a pyrotechnic gas generator.

17. The automotive vehicle of claim 16 wherein said propellant is selected to be a solid.

18. The automotive vehicle of claim 15 wherein said at least one location about said body includes an underside of said vehicle body.

19. The automotive vehicle of claim 16 wherein said at least one location about said body includes an underside of said vehicle body.

20. A method for activating a fire suppression system installed in a vehicle, such as a passenger automobile, comprising the steps of:

detecting a collision with a sensor;

sensing when a vehicle is coming to a stop after a collision; and

activating the fire suppression system to discharge a volume of fire suppressant from a tank installed in the vehicle based on vehicle speed or a lack thereof after said collision.