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1. 发明授权

US07836815B2 Lubricant-cooled and wristpin lubricating piston 失效
标题翻译：润滑油冷却和活塞润滑活塞
公开(公告)号：US07836815B2
公开(公告)日：2010-11-23
申请号：US11688285
申请日：2007-03-20
申请人： Douglas A. Doers , David D. Driscoll
发明人： Douglas A. Doers , David D. Driscoll
IPC分类号： F01B31/10
CPC分类号： F02F3/22 , F01M2011/025 , F01M2011/027 , F02F3/20 , F16J1/14
摘要： A piston for an internal combustion engine, the engine having a connecting rod coupled to a wristpin, the wristpin being connected to the piston for pivotal movement about an axis, the piston comprising: a top portion and a generally cylindrically-shaped wall portion extending from the top portion, the top and wall portions defining a skirt cavity, the top portion having thereon a downwardly extending projection with a downwardly facing bearing surface for the wristpin, the bearing surface extending in the direction of the axis and defining a portion of a cylinder centered on the axis, and the projection having opposite sides facing the skirt cavity; at least one lubricant passage extending through the projection from one of the opposite sides and over the bearing surface to the other of the opposite sides; and a lubricant opening communicating between the lubricant passage and the bearing surface to supply lubricant to the bearing surface and to the wristpin.
摘要翻译：一种用于内燃机的活塞，所述发动机具有联接到腕销的连接杆，所述腕销连接到所述活塞以围绕轴线枢转运动，所述活塞包括：顶部和大致圆柱形的壁部分，其从顶部和顶部和壁部分限定了裙部空腔，顶部具有向下延伸的突起，该突出部具有向下的用于腕销的轴承表面，支承表面在轴线方向上延伸并且限定圆柱体的一部分中心在轴上，并且具有面向裙部空腔的相对侧的突起; 至少一个润滑剂通道从相对侧中的一个延伸穿过所述突起并在所述支承表面上延伸到相对的另一侧; 以及润滑剂开口，其在所述润滑剂通道和所述支承表面之间连通以将润滑剂供应到所述支承表面和所述腕销。

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