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    • 10. 发明授权
    • Valve operating mechanism of internal combustion engine
    • 内燃机阀门操作机构
    • US07246578B2
    • 2007-07-24
    • US11055096
    • 2005-02-11
    • Makoto NakamuraMikihiro KajiuraSeinosuke Hara
    • Makoto NakamuraMikihiro KajiuraSeinosuke Hara
    • F01L1/34
    • F01L1/2405F01L1/185F01L1/267F01L13/0005F01L13/0026F01L13/0063F01L2013/0073F01L2105/00F01L2810/02F01L2820/032
    • A valve operating mechanism of an internal combustion engine, comprises a drive cam rotatable with and eccentric to a drive shaft; a link arm having a circular opening in which the drive cam is rotatably received, so that rotation of drive cam about an axis of the drive shaft produces a swing movement of the link arm; a pair of swing cams swingably disposed on the drive shaft at both sides of the drive cam, the swing cams being connected through a movement transmission mechanism to the link arm to be swung when the link arm is subjected to the swing movement; a pair of swing arms respectively actuated by the swing cams for carrying out an open/close operation of a pair of engine valves; a pair of spring retainers respectively provided by the pair of engine valves; and a pair of valve springs respectively held by the spring retainers and biasing the engine valves in a close direction. A lubricating oil passage is formed in the drive cam. The oil passage has one end exposed to an oil feeding passage formed in the drive shaft and the other end exposed to a minute clearance defined between a cylindrical outer surface of the drive cam and a cylindrical inner surface of the circular opening of the link arm.
    • 一种内燃机的气门操作机构,包括可与驱动轴一起旋转并偏心的驱动凸轮; 具有圆形开口的连杆臂,驱动凸轮可旋转地被容纳在该开口中,使得驱动凸轮围绕驱动轴的轴线的旋转产生连杆臂的摆动运动; 一对摆动凸轮,其可摆动地设置在驱动凸轮的两侧的驱动轴上,当连杆臂受到摆动时,摆动凸轮通过运动传递机构连接到连杆臂上以摆动; 分别由摆动凸轮致动的一对摆臂,用于执行一对发动机气门的打开/关闭操作; 分别由一对发动机气门设置的一对弹簧保持器; 以及一对气门弹簧,分别由弹簧保持器保持并且沿着紧密的方向偏置发动机气门。 润滑油通道形成在驱动凸轮中。 油路的一端暴露于形成在驱动轴上的供油通道,另一端暴露在驱动凸轮的圆柱形外表面和连杆臂的圆形开口的圆柱形内表面之间限定的微小间隙。