| 摘要 |
An internal combustion engine with an interior annular surface. A rotary piston mount rotates within an engine block interior space. Several spherical pistons are urged radially outwardly from the rotary piston mount by an urging means, and move in a radial reciprocating motion within the rotary piston mount. A gas-producing means produces an expanding gas. The gas drives the spherical pistons and the rotary piston mount rotationally along the interior annular surface of the engine block.
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