Engine having thin film oxygen separation system

• US 20090139497A1
• Filed: 11/30/2007
• Published: 06/04/2009
• Est. Priority Date: 11/30/2007
• Status: Abandoned Application

• Current Assignee: Caterpillar Incorporated
• Original Assignee: Caterpillar Incorporated
• Inventors: Weber, Marcus Ronald, Shi, Bo, Altin, Orhan
• Application Number:
  US11/987,530
• Publication Number:
  US 20090139497A1
• Time in Patent Office: Days
• US Class Current: 123/539
• CPC Class Codes: B01D 2256/12 Oxygen
• CPC Class Codes: B01D 2257/102 Nitrogen
• CPC Class Codes: B01D 53/323 by electrostatic effects or by high-voltage electric fields
• CPC Class Codes: F02B 29/0425 Air cooled heat exchangers
• CPC Class Codes: F02B 47/08 the substances including exhaust gas
• CPC Class Codes: F02B 51/02 involving catalysts
• CPC Class Codes: F02M 25/12 the apparatus having means for generating such gases using rays and simultaneously generating ozone F02M27/06
• CPC Class Codes: F02M 26/08 for engines having two or more intake charge compressors or exhaust gas turbines, e.g. a turbocharger combined with an additional compressor
• CPC Class Codes: F02M 26/15 in relation to engine exhaust purifying apparatus
• CPC Class Codes: F02M 27/04 by electric means, ionisation, polarisation or magnetism
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

Abstract

An oxygen separation system for an engine is disclosed. The oxygen separation system may include a cathode exposed to inlet air, an anode configured to direct a flow of substantially pure oxygen to a combustion chamber of the engine, and a thin film electrolyte located between the anode and the cathode.

Claims

1. An oxygen separation system for an engine comprising:

a cathode exposed to atmospheric air;

an anode configured to direct a flow of substantially pure oxygen to a combustion chamber of the engine; and

a thin film electrolyte located between the anode and the cathode.

2. The oxygen separation system of claim 1, wherein the cathode is an oxygen reducer.

3. The oxygen separation system of claim 1, wherein the thin film electrolyte is an oxygen ion conductor.

4. The oxygen separation system of claim 1, wherein the anode is an oxygen ion oxidizer.

5. The oxygen separation system of claim 1, wherein the thin film electrolyte is configured to transport only oxygen ions from the cathode to the anode.

6. The oxygen separation system of claim 1, wherein the thin film electrolyte is formed by one of physical vapor deposition or chemical vapor deposition.

7. The oxygen separation system of claim 1, wherein the thin film electrolyte includes at least one of yttrium stabilized zirconium, gadolinium doped ceria, lanthanum molybdenum oxide, bismuth vanadium copper oxide, or lanthanum strontium gallium magnesium oxide.

8. The oxygen separation system of claim 1, further including a power supply configured to generate a low voltage potential between the anode and the cathode.

9. The oxygen separation system of claim 8, wherein the power supply is configured to supply power at about 0.2 A per square centimeter of an active area of the thin film electrolyte.

10. The oxygen separation system of claim 1, wherein the anode is one of nickel-gadolinium doped ceria cermet and nickel oxide-yttrium stabilized zirconium.

11. The oxygen separation system of claim 1, wherein the cathode is one of lanthanum strontium cobalt ferrite and lanthanum strontium manganese oxide-yttrium stabilized zirconium.

12. The oxygen separation system of claim 1, further including a flow of engine exhaust configured to increase an electro-conductivity of the thin film electrolyte.

13. A power system comprising:

an engine;

an induction system configured to direct combustion gases into the engine;

an oxygen separation system, wherein the oxygen separation system includes;

an oxygen reducer located at an atmospheric inlet of the induction system;

an oxygen ion oxidizer spaced at a distance from the oxygen reducer; and

a thin film electrolyte located between the oxygen reducer and the oxygen ion oxidizer.

14. The power system of claim 13, further including an exhaust recirculation system configured to receive at least a portion of a flow of exhaust from the engine and recirculate the exhaust to a combustion chamber of the engine, wherein at least a portion of the flow of exhaust is mixed with a substantially pure flow of oxygen from the induction system, prior to recirculation into the combustion chamber of the engine.

15. The power system of claim 14, further including a cooler, wherein the mixture of the portion of the flow of exhaust and the flow of oxygen from the induction system pass through the cooler prior to entering the combustion chamber of the engine.

16. The power system of claim 13, further including multiple oxygen separation systems disposed in serial or parallel relation.

17. The power system of claim 16, wherein a sum of the areas of each thin film electrolyte is about 20 square meters.

18. A method of operating a power source comprising:

reducing oxygen from atmospheric air to form oxygen ions;

transporting the oxygen ions to an inlet of the power source;

oxidizing the oxygen ions to form molecular oxygen; and

combusting the molecular oxygen within the power source.

19. The method of claim 18, wherein transporting includes conducting the oxygen ions with a low voltage.

20. The method of claim 18, further including mixing exhaust gases from the power source with the molecular oxygen and cooling the exhaust gases and the molecular oxygen, before combusting the molecular oxygen.