A wrist pin for a heavy-duty piston assembly has a body with an axis of rotation and a generally cylindrical outer surface. The outer surface is adapted for pivotal connection to both a pair of laterally spaced pin bores and a small end of a connecting rod generally between the pin bores. The outer surface has a surface roughness equal to or less than 0.10 mum. The outer surface has a Kurtosis value that is inversely proportional with the surface roughness such that a product of the Kurtosis value and the surface roughness is between about 0.30 mum to 0.60 mum. The outer surface has a skewness of about -1.0 to 0.0 and a lay angle relative to the axis of about 85 to 95 degrees.
申请公布号
EP1590584(A4)
申请公布日期
2006.02.01
申请号
EP20040707750
申请日期
2004.02.03
申请人
FEDERAL-MOGUL CORPORATION
发明人
NIGRO, ROBERTO, B.;GAISER, RANDALL, R.;MATSUO, EDUARDO;HIGHUM, ERIC, A.