| 摘要 |
PURPOSE:To reduce friction and increase engine output, by retaining fan-like pistons through arms to a central shaft of a doughnut cylinder and rotating crank shafts and gears in a crank case. CONSTITUTION:A fan-like scavenging output piston 2 and a fan-like exhausting output piston 2' are retained through arms 3 and 4 to a central shaft 5 of a doughnut cylinder 1. Both the pistons 2 and 2' are connected through connecting rods 6 and 6' to crank pins. Crank shafts 9 and 10 are synchronously rotated with gears 7 and 8 in a crank case 11. In this way, as the pistons are supported to the central shaft, friction is reduced, and engine output may be increased. Further, as there is created no slap noise, silent operation may be attained.
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