| 摘要 |
An internal combustion engine having a set of annular 360 degree cylinders each containing two sets of double-headed pistons. The piston sets reciprocate approximately 45 degrees within said cylinder between two combustion ports located 180 degrees apart. The reciprocal motion of the piston sets is translated to a rotational motion to power a drive shaft by four ratchet and pawl mechanisms connected to circular gear sets. An adjustable combustion cylinder allows the total cubic volume of the engine to be varied according to the power needed at any given time.
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