| 摘要 |
A main bearing for an internal combustion engine includes a top half and a bottom half joined along edges to from a sleeve for surrounding a main bearing of a crankshaft. A pair straight recesses, parallel to the bearing axis and the joining edges, are disposed on an internal surface of the bottom half of the bearing so that oil can puddle there, capture debris, and prevent dry starts of the internal combustion engine. A separate set of oppositely angled grooves are disposed on the internal surface of the bottom half of the bearing and outside the pair of straight recesses. The first angled groove removes excess oil from the front or back of the bearing and the second angled groove returns sufficient oil to maintain adequate surface bearing lubrication.
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