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    • 66. 发明授权
    • Lubrication apparatus for four-stroke engine
    • 四冲程发动机润滑装置
    • US08746203B2
    • 2014-06-10
    • US13665995
    • 2012-11-01
    • Yuki Nakamura
    • Yuki Nakamura
    • F01M1/04
    • F01M1/04
    • A lubrication apparatus for a four-stroke engine includes a piston, a cylinder, a crank chamber and a valve operating chamber. The lubrication apparatus configured to lubricate driving parts while circulating oil mist through an oil circulation pathway, using pressure fluctuation in the crank chamber, the pressure fluctuation being caused by reciprocating motion of the piston. The lubrication apparatus further includes a direct passageway configured to allow communication between the valve operating chamber and the crank chamber when a negative pressure is created in the crank chamber. The direct passageway includes a flexible tube part that is formed out of the cylinder.
    • 用于四冲程发动机的润滑装置包括活塞,气缸,曲柄室和气门操作室。 所述润滑装置构成为,通过利用曲柄室内的压力波动使油雾循环通过油循环路径而润滑驱动部,所述压力波动是由活塞的往复运动引起的。 润滑装置还包括直接通道,其构造成当在曲柄室中产生负压时允许阀操作室和曲柄室之间的连通。 直接通道包括形成在气缸外的柔性管部分。