Internal rotational combustion engine, has piston of annular tri-arc form within chamber having bi-arc form and external toothed hexa-arc gearwheel fit on one end of annular piston

摘要

The engine has a core of a fixed bi-arc form (2) around which it rotates around centers, and a piston of annular tri-arc form (1) within a chamber with a bi-arc form (3). An external toothed hexa-arc (6) gearwheel is fit on one end of the annular piston. Two cross shaft gearwheels that are opposite to each other pass on energy to a common shaft intermediary of two free wheels.