| 摘要 |
PROBLEM TO BE SOLVED: To provide a single crank of a prime mover for forming an engine room compact by supporting respective links of plural cylinders in a prime mover for transmitting power to a drive shaft by the single crank so as to transmit power to a crank shaft for reducing friction resistance applied to the crank shaft by plural cranks in a conventional prime mover. SOLUTION: Respective links 2 of plural cylinders 1 are supported by the single crank 3 to transmit power to the crank shaft 4.
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