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    • 9. 发明授权
    • Piston assembly and connecting rod having a profiled wrist pin bore therefor
    • 活塞组件和连杆具有成型的手腕销孔
    • US08539928B2
    • 2013-09-24
    • US12330932
    • 2008-12-09
    • Roberto Bueno NigroKai Wang
    • Roberto Bueno NigroKai Wang
    • F02B75/32
    • F02F3/00F02B23/0672F02B23/0693F16C9/04F16C23/041F16C33/10F16J1/16Y02T10/125
    • A piston assembly and connecting rod therefor is provided. The connecting rod has an elongate body extending to an end for operable attachment to a piston. The end has a wrist pin bore extending between opposite sides of the body. The wrist pin bore has a wavy profile extending between the sides. The wavy profile has at least one concave surface with a valley extending along a circumferential direction of the wrist pin bore and convex surfaces having peaks extending along a circumferential direction of the wrist pin bore on laterally opposite sides of the valley. The peaks and valleys cooperate to form a smooth load gradient and uniform lubrication flow across the interface region between the wrist pin bore and the wrist pin extending therethrough.
    • 提供一种活塞组件及其连接杆。 连杆具有延伸到端部的细长主体以可操作地附接到活塞。 该端部具有在主体的相对侧之间延伸的腕销孔。 腕针孔具有在两侧之间延伸的波状轮廓。 波浪形轮廓具有至少一个凹形表面,其具有沿着腕针孔的圆周方向延伸的谷部,并且凸起表面具有沿着在山谷的横向相对侧上的腕针孔的圆周方向延伸的峰部。 峰和谷合作形成平滑的载荷梯度,并且穿过腕针孔和延伸穿过其的腕针之间的界面区域的均匀润滑流。