Patent ID: 9175725
Filing Date: 2015-11-03
Classification: F01M,F02B,F16C,F16J

Abstract:
1. A rocking journal bearing for a two-stroke cycle engine, comprising: a bearing support structure; a bearing sleeve in the bearing support structure, the bearing sleeve including a bearing surface with a plurality of axially-spaced, eccentrically-disposed surface segments; a matrix of oiling grooves in the bearing surface, the matrix including circumferential and axial oiling grooves in which circumferential oiling grooves are disposed between adjacent surface segments and axial oiling grooves intersect circumferential oiling grooves; a rocking journal including a plurality of axially-spaced, eccentrically-disposed journal segments; the bearing support structure retaining the rocking journal for rocking oscillation on the bearing surface; and, an oil-receiving space in the rocking journal with oil outlet passages acting through the journal segments; wherein the rocking journal includes at least two axially-spaced circumferential oiling grooves in a journal outer surface, between journal segments, and at least one oil outlet passage opens through each of the circumferential oiling grooves in the journal outer surface.