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Invention Grant
US08356550B2 Piston skirt with friction reducing oil recess and oil reservoir 有权
活塞裙与减摩油凹槽和油库

Piston skirt with friction reducing oil recess and oil reservoir
Abstract:
A piston (20) includes a piston skirt (30) extending along a longitudinal axis (L) and having a pair of convex outer surfaces (42) facing opposite one another. Each of the outer surfaces (42) include an oil reservoir (44) above the pin bore axis (P) and an oil recess (46) below the pin bore axis (P) and spaced from the oil reservoir (44) by an intervening oil spreading area (48). The oil reservoir (44) and oil recess (46) each include a bottom (50) extending over an area of the outer surface (42) and surrounded by ramped side walls (52). The oil recess (46) and oil reservoir (44) include radiused corners (54) at a transition between the outer surface (42) and at the bottoms (50), so that the oil reservoir (44), oil recess (46), and outer surface (42) are free of sharp edges.
Abstract(Chinese):

活塞（20）包括沿着纵向轴线（L）延伸并且具有彼此相对的一对凸形外表面（42）的活塞裙部（30）。 每个外表面（42）包括在销孔轴线（P）上方的油储存器（44）和在销孔轴线（P）下方的油凹部（46），并且与油储存器（44）间隔开 油铺面积（48）。 油储存器（44）和油凹部（46）各自包括在外表面（42）的一个区域上延伸并被倾斜的侧壁（52）包围的底部（50）。 油槽（46）和储油器（44）包括在外表面（42）和底部（50）之间的过渡处的圆角（54），使得油储存器（44），油凹部（46） ，而外表面（42）没有锋利的边缘。

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