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Invention Application
WO2013082001A1 THRUST LUBRICATION STRATEGY FOR ROLLER LIFTERS OF A COMMON RAIL FUEL PUMP 审中-公开
通用铁路燃油泵滚子轴承润滑策略

THRUST LUBRICATION STRATEGY FOR ROLLER LIFTERS OF A COMMON RAIL FUEL PUMP
Abstract:
A common rail fuel pump (10) includes a cam shaft (18) with at least one cam rotatably supported in a pump housing (11). A plurality of tappet assemblies (30) are each reciprocatingly movable in the pump housing (11), and include an axle pin (40) mounted in a tappet (31), and a roller (50) mounted in contact for rotation about the axle pin (40). Each end of the roller (50) includes a plurality of non-contiguous planar thrust surfaces separated by lubrication grooves (56). A lubrication pathway (44) for the roller (50) includes in sequence a lubrication passage that opens to a roller bearing surface (43), movement along the roller bearing surface (43) into the lubrication grooves (56), and then between the planar thrust surface of the roller (50) and a counterpart thrust face of the tappet (31) responsive to rotation of the roller (50) on the cam shaft (18).
Abstract(Chinese):

共轨燃料泵（10）包括凸轮轴（18），其具有可旋转地支撑在泵壳体（11）中的至少一个凸轮。 多个挺杆组件（30）都可以在泵壳体（11）中往复运动，并且包括安装在挺杆（31）中的轴销（40）和安装成接触的滚子（50），以绕轴旋转 销（40）。 辊（50）的每个端部包括由润滑槽（56）分开的多个不连续的平面推力面。 用于辊（50）的润滑路径（44）依次包括通向滚子轴承表面（43）的润滑通道，沿着滚子轴承表面（43）移动到润滑槽（56）中，然后在 响应于所述辊（50）在所述凸轮轴（18）上的旋转，所述辊（50）的平面推力表面和所述挺杆（31）的对应推力面。

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