| 摘要 |
The present invention provides a novel internal combustion engine of the annular piston type and a center shaft for such an engine for further improving the cooling an internal combustion engine of the annular piston type. The internal combustion engine comprises a block having at least one annular combustion chamber and an annular piston with a center chamber. The annular piston of the engine is configured to reciprocate in the combustion chamber. The internal combustion engine further comprises a center shaft being fixed to said block and configured to fit at least partially inside the center chamber of the annular piston. The center shaft comprises at least one passageway which is configured to lead fluid flow to and from the center chamber of the annular piston. |
