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21. 发明授权

US06513477B1 Closed gallery piston having pin bore lubrication 有权
标题翻译：封闭式活塞具有销孔润滑
公开(公告)号：US06513477B1
公开(公告)日：2003-02-04
申请号：US09957716
申请日：2001-09-19
申请人： Randall R. Gaiser , Carmo Ribeiro , Eduardo H. Matsuo
发明人： Randall R. Gaiser , Carmo Ribeiro , Eduardo H. Matsuo
IPC分类号： F02F300
CPC分类号： F02F3/22 , F02F3/003 , F16J1/08
摘要： A piston for diesel engines includes a piston body formed with a closed oil gallery and a pair of pin bosses having axially aligned pin bores whose surfaces are spaced from one another about their circumference across an intervening gap between the pin bosses. The pin bore surfaces are each formed with a recess which extends in the axial direction of the pin bores across the full width of each of the pin bore surfaces. An oil passage leads from the gallery to each of the recesses and feeds the recesses with lubricating oil from the gallery. The recesses act as retention basins or reservoirs which collect and supply the pin bore surfaces with lubricating oil during the fall cycle of the piston.
摘要翻译：用于柴油发动机的活塞包括形成有封闭油库的活塞体和具有轴向对准的销孔的一对销凸起，所述销孔的表面相对于销凸起之间的中间间隙围绕其圆周彼此间隔开。销孔表面各自形成有在销孔的轴向方向上跨越每个销孔表面的整个宽度延伸的凹部。一个油通道从画廊引导到每个凹槽，并从画廊向润滑油供给凹槽。凹槽用作在活塞下落周期期间收集并提供销孔表面带有润滑油的保持槽或储存器。

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