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1. (WO2014149415) ROTARY ENGINE, GAS COMPRESSOR, AND LIQUID PUMP
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WHAT IS CLAIMED IS:

1. A rotary internal combustion engine comprising:

a power module, wherein all moving parts of the engine are positioned within the power module;

a housing including an intake and an exhaust, wherein the housing is configured to retain the power module; and

a sleeve configured to be positioned in the housing, the sleeve including a sleeve intake and a sleeve exhaust.

2. A rotary internal combustion engine according to Claim 1, wherein the sleeve intake is configured to communicate with the housing intake to create an intake flow path, and the sleeve exhaust is configured to communicate with the housing exhaust to create an exhaust flow path.

3. A rotary internal combustion engine according to Claim 1, wherein the power module includes at least one piston assembly having a piston head coupled to a piston crankshaft assembly.

4. A rotary internal combustion engine according to Claim 3, wherein the piston head includes at least one combustion recess configured to provide a combustion zone on a top surface of the piston head.

5. A rotary internal combustion engine according to Claim 4, wherein the piston head is coupled to at least one piston sealing assembly configured to substantially seal the at least one combustion zone.

6. A rotary internal combustion engine according to Claim 5, wherein the at least one piston sealing assembly includes a spring member configured to urge a first seal of the sealing assembly in a first direction and urge a second seal of the sealing assembly in a second direction different than the first direction.

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7. A rotary internal combustion engine according to Claim 1, wherein the power module is coupled to at least one crossover seal assembly configured to substantially seal combustion chambers within the housing.

8. A rotary internal combustion engine according to Claim 7, wherein the crossover seal assembly includes a spring member configured to urge a first seal of the crossover seal assembly in a first direction, urge a second seal of the crossover seal assembly in a second direction different than the first direction, and urge both seals in a third direction different than the first and second directions.

9. A rotary internal combustion engine according to Claim 7, wherein the crossover seal assembly includes a fluid or gas pressurization configured to urge a first seal of the crossover seal assembly in a first direction, urge a second seal of the crossover seal assembly in a second direction different than the first direction, and urge both seals in a third direction different than the first and second directions.

10. A rotary internal combustion engine according to Claim 7, wherein the crossover seal assembly has a width larger than an arc length greater than the larger of an injection hole or ignition device hole in at least one of the housing and sleeve.

11. A rotary internal combustion engine according to Claim 1, wherein at least one of the sleeve intake and sleeve exhaust are configured to modify a torque output of the engine.

12. A rotary internal combustion engine according to Claim 1, wherein at least one of the sleeve intake and sleeve exhaust are configured to modify a horsepower output of the engine.

13. A rotary internal combustion engine according to Claim 1, wherein at least one of the sleeve intake and sleeve exhaust are configured to modify at least one of a fuel timing of the engine and an ignition timing of the engine.

14. A rotary internal combustion engine according to Claim 1, further comprising at least one ring seal assembly and two cover plates coupled to the housing, wherein the at least one ring seal assembly is positioned between the power module and at least one cover 32605-00018

plate coupled to the housing, wherein a compression of ring seal assembly is by at least one of pneumatically controlled and hydraulically controlled.

15. A rotary internal combustion engine according to Claim 1, wherein the housing includes at least one cover plate having a sun gear assembly that is configured to modify at least one of a power curve versus revolutions per minute and a torque curve versus revolutions per minute.

16. A housing assembly for use in a rotary internal combustion engine, the housing comprising:

a main unit including an intake and an exhaust, wherein the housing is configured to retain a power module for the internal combustion engine; and

a sleeve configured to couple in the housing, the sleeve including a sleeve intake and a sleeve exhaust.

17. A housing assembly according to Claim 16, wherein the sleeve intake is configured to communicate with the housing intake to create an intake flow path, and the sleeve exhaust is configured to communicate with the housing exhaust to create an exhaust flow path.

18. A housing assembly according to Claim 16, wherein at least one of the sleeve intake and the sleeve exhaust is configured to modify at least one of a torque output of the engine, a horsepower output of the engine, a fuel timing of the engine, and an ignition timing of the engine.

19. A method of manufacturing a rotary internal combustion engine, the method comprising

providing a housing including an intake and an exhaust;

coupling a sleeve within the housing, the sleeve including a sleeve intake, and a sleeve exhaust; and

positioning a power module in the housing, wherein all pistons and piston crankshafts of the engine are positioned within the power module.

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20. A method according to Claim 19, wherein coupling a power module to the housing further comprises coupling a power module including at least one crossover seal assembly configured to substantially seal combustion chambers within the housing.

21. A method according to Claim 19, wherein coupling a sleeve in the housing further comprises coupling a sleeve in the housing that is configured to modify at least one of a torque output of the engine, a horsepower output of the engine, a fuel timing of the engine, and/or an ignition timing of the engine.

22. A method according to Claim 19, positioning a ring seal assembly between the power module and at least one cover plate coupled to the housing, wherein a compression of ring seal assembly is at least one of pneumatically controlled and hydraulically controlled by.