Combustion enhancement system

• US 5,113,804 A
• Filed: 02/04/1991
• Issued: 05/19/1992
• Est. Priority Date: 02/04/1991
• Status: Expired due to Term

• Current Assignee: Pat-Will Irrevocable Trust
• Original Assignee: Advanced Combustion Technology
• Inventors: Kraus, Greg A., Wells, Mark R. J., Simmons, William R.
• Primary Examiner(s): ARGENBRIGHT, TONY MICHAEL
• Application Number:
  US07/650,766
• Time in Patent Office: 470 Days
• Field of Search: 123/1 A, 123/23, 123/198 A, 431/4
• US Class Current: 123/1.00A
• CPC Class Codes: F02B 1/04 with fuel-air mixture admission into cylinder
• CPC Class Codes: F02B 43/04 for improving efficiency of combustion
• CPC Class Codes: F02B 47/04 the substances being other than water or steam only
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies
• CPC Class Codes: Y02T 10/30 Use of alternative fuels, e.g. biofuels

Abstract

An apparatus and method for enhancing the efficiency of a combustion process and thereby reducing undesirable emissions in which a solid combustion enhancing substance is converted into a highly dispersed, gas-transportable state at a controlled rate and is subsequently conveyed into the zone of combustion. The use of a substance in its solid state eases handling and avails highly effective materials for combustion and enhancement while the necessary conversion of the substance from one state to another enables a high degree of control as to its rate of addition to the combustion process. The substance'"'"'s highly dispersed state when it enters the combustion process maximizes its effect.

Claims

1. A device for enhancing the efficiency of a combustion process in which a hydrocarbon fuel is consumed in a combustion zone in order to diminish the emission therefrom of undesirable compounds including carbon monoxide and incompletely oxidized hydrocarbons, comprising:

means for storing a preselected combustion enhancing substance in its solid state selected for its stability to significantly enhance said combustion process at ppb-range concentrations and for its convertibility into a highly dispersed, gas-transportable state;

means for variably converting at a controllable rate said combustion enhancing substance directly from its solid state into its highly dispersed, gas-transportable state; and

means for transporting said converted substance, substantially immediately upon its conversion, to said combustion zone.

2. The device of claim 1, further comprising means for determining the fuel'"'"'s consumption rate and means for controlling the conversion rate of the combustion enhancing substance from its solid state to its highly dispersed, gas-transportable state as a function of said determined consumption rate.

3. The device of claim 1, further comprising means for determining the emission rate of selected compounds from the combustion process and means for controlling the conversion rate of the combustion enhancing substance from its solid state to its highly dispersed, gas-transportable state as a function of said determined emission rate.

4. The device of claim 1 wherein said transporting means comprises a gas flow passing through said converted substance in its highly dispersed, gas-transportable state and into said combustion zone.

5. The device of claim 4 wherein said gas flow comprises combustion air for said combustion process.

6. The device of claim 1 wherein said transporting means comprises a gas generated contemporaneously with the conversion of said combustion enhancing substance into its highly dispersed, gas-transportable state that is conducted into the combustion zone.

7. The device of claim 1 wherein said converting means serves to subject said solid combustion enhancing substance to heat.

8. The device of claim 7 wherein said subjecting of said solid combustion enhancing material causes it to sublime.

9. The device of claim 7 wherein said combustion enhancing substance comprises bis-acetylacetonato platinum and said converting means serves to subject said solid substance to a temperature of between about 260°

and 310°

F.

10. The device of claim 9 further comprising means for preventing said substance in its highly dispersed, gas-transportable state from contacting surfaces exceeding about 330°

F. during its transport into the combustion zone.

11. The device of claim 9 wherein said bis-acetylacetonato platinum is stored as a fine powder in a hopper, and the device further comprises a positive displacement pump means for transferring a preselected volume of powder from said hopper onto a heated surface held at between about 260°

and 310°

F.

12. The device of claim 11 wherein said positive displacement pump is driven by a variable speed motor.

13. The device of claim 12 further comprising means for determining fuel consumption rate and means for varying said motor'"'"'s speed as a function of said determined consumption rate.

14. The device of claim 12 further comprising means for determining the emission rate of selected constituents from the combustion process and means for varying said motor'"'"'s speed as a function of said determined emission rate.

15. The device of claim 9 wherein said bis-acetylacetonato platinum powder is diluted with a filler material, said filler material selected to have a particle size and density comparable to the bis-acetylacetonato platinum powder and further selected to sublime at between about 260°

and 310°

F.

16. The device of claim 15 wherein said subliming filler material is employed to transport said bis-acetylacetonato platinum in its highly dispersed, gas-transportable state into the combustion zone.

17. The device of claim 16 wherein said filler material is vanillic acid.

18. A device for enhancing the efficiency of an internal combustion engine in which hydrocarbon fuel is consumed in a combustion chamber in order to diminish the emission of undesirable exhaust constituents including carbon monoxide and incompletely oxidized hydrocarbons, comprising:

a container for storing a selected combustion enhancing substance in its solid state, said substance selected for its ability to enhance the combustion process at ppb-range concentrations and further selected for its convertibility into a highly dispersed, gas-transportable state upon heating;

a heated surface maintainable at a preselected temperatures;

a positive displacement pump for transferring a preselected quantity of said substance onto said heated surface;

a variable speed motor for controlling the transfer rate of said pump; and

a gas stream for transporting said substance converted into its highly dispersed, gas-transportable state into the engine'"'"'s combustion chamber.

19. The device of claim 18 further comprising means for determining the rate of fuel consumption and means for varying said motor'"'"'s speed as a function of said consumption rate.

20. The device of claim 19 wherein the engine'"'"'s intake manifold pressure is measured to approximate the fuel consumption rate.

21. The device of claim 18 wherein finely powdered bis-acetylacetonato platinum is the selected combustion enhancing substance and the heated surface is maintained at between about 260°

F. and 310°

F.

22. The device of claim 21 wherein the gas stream for transporting converted substance is prevented from contacting surfaces in excess of about 400°

F. prior to entering the combustion chamber.

23. A method for enhancing the efficiency of a combustion process in which a hydrocarbon fuel is consumed in a combustion zone in order to diminish emission therefrom of undesirable compounds including carbon monoxide and incompletely oxidized hydrocarbons, comprising the steps of:

selecting a combustion enhancing substance that is in its solid phase at ambient conditions said substance having the ability to significantly enhance said combustion process at ppb-range concentrations and further being convertible into a highly dispersed, gas-transportable state;

storing said substance in its solid state;

variably converting said solid substance at a controllable rate into its highly dispersed, gas-transportable state; and

transporting said converted substance, substantially immediately upon its conversion, to said combustion zone.

24. The method of claim 23 further comprising the steps of determining the fuel consumption rate of said combustion process and controlling the rate of converting said solid substance into its highly dispersed, gas-transportable state as a function of the determined fuel consumption rate.

25. The method of claim 23 further comprising the steps of determining the emission rate of selected compounds from said combustion process and controlling the rate of converting said solid substance into its highly dispersed, gas-transportable state as a function of the determined emission rate.

26. The method of claim 23 wherein the converting step comprises the step of heating said solid substance.

27. The method of claim 26 further comprising the step of employing combustion air drawn into said combustion process for transporting combustion enhancing substance in its highly dispersed, gas-transportable state to the combustion zone.

28. The method of claim 23 wherein the converting step comprises subliming said solid substance.

29. The method of claim 28 further comprising the steps of selecting a filler material having a sublimation temperature comparable to the temperature at which said combustion enhancing substance is converted from a solid to its highly dispersed, gas-transportable state and diluting said solid substance with said filler material prior to storage.

30. The method of claim 29 further comprising the step of employing the subliming filler material to transport the combustion enhancing substance in its highly dispersed, gas-transportable state to the combustion zone.